TestFoundation/TestNSNumber.swift

// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//

class TestNSNumber : XCTestCase {
    static var allTests: [(String, (TestNSNumber) -> () throws -> Void)] {
        return [
            ("test_NumberWithBool", test_NumberWithBool ),
            ("test_CFBoolean", test_CFBoolean ),
            ("test_numberWithChar", test_numberWithChar ),
            ("test_numberWithUnsignedChar", test_numberWithUnsignedChar ),
            ("test_numberWithShort", test_numberWithShort ),
            ("test_numberWithUnsignedShort", test_numberWithUnsignedShort ),
            ("test_numberWithLong", test_numberWithLong ),
            ("test_numberWithUnsignedLong", test_numberWithUnsignedLong ),
            ("test_numberWithLongLong", test_numberWithLongLong ),
            ("test_numberWithUnsignedLongLong", test_numberWithUnsignedLongLong ),
            ("test_numberWithInt", test_numberWithInt ),
            ("test_numberWithUInt", test_numberWithUInt ),
            ("test_numberWithFloat", test_numberWithFloat ),
            ("test_numberWithDouble", test_numberWithDouble ),
            ("test_compareNumberWithBool", test_compareNumberWithBool ),
            ("test_compareNumberWithChar", test_compareNumberWithChar ),
            ("test_compareNumberWithUnsignedChar", test_compareNumberWithUnsignedChar ),
            ("test_compareNumberWithShort", test_compareNumberWithShort ),
            ("test_compareNumberWithFloat", test_compareNumberWithFloat ),
            ("test_compareNumberWithDouble", test_compareNumberWithDouble ),
            ("test_description", test_description ),
            ("test_descriptionWithLocale", test_descriptionWithLocale ),
            ("test_objCType", test_objCType ),
            ("test_stringValue", test_stringValue),
            ("test_Equals", test_Equals),
            ("test_boolValue", test_boolValue),
            ("test_hash", test_hash),
        ]
    }
    
    func test_NumberWithBool() {
        XCTAssertEqual(NSNumber(value: true).boolValue, true)
        XCTAssertEqual(NSNumber(value: true).int8Value, Int8(1))
        XCTAssertEqual(NSNumber(value: true).uint8Value, UInt8(1))
        XCTAssertEqual(NSNumber(value: true).int16Value, Int16(1))
        XCTAssertEqual(NSNumber(value: true).uint16Value, UInt16(1))
        XCTAssertEqual(NSNumber(value: true).int32Value, Int32(1))
        XCTAssertEqual(NSNumber(value: true).uint32Value, UInt32(1))
        XCTAssertEqual(NSNumber(value: true).int64Value, Int64(1))
        XCTAssertEqual(NSNumber(value: true).uint64Value, UInt64(1))

        XCTAssertEqual(NSNumber(value: true).floatValue, Float(1))
        XCTAssertEqual(NSNumber(value: true).doubleValue, Double(1))
        
        XCTAssertEqual(NSNumber(value: false).boolValue, false)
        XCTAssertEqual(NSNumber(value: false).int8Value, Int8(0))
        XCTAssertEqual(NSNumber(value: false).uint8Value, UInt8(0))
        XCTAssertEqual(NSNumber(value: false).int16Value, Int16(0))
        XCTAssertEqual(NSNumber(value: false).uint16Value, UInt16(0))
        XCTAssertEqual(NSNumber(value: false).int32Value, Int32(0))
        XCTAssertEqual(NSNumber(value: false).uint32Value, UInt32(0))
        XCTAssertEqual(NSNumber(value: false).int64Value, Int64(0))
        XCTAssertEqual(NSNumber(value: false).uint64Value, UInt64(0))

        XCTAssertEqual(NSNumber(value: false).floatValue, Float(0))
        XCTAssertEqual(NSNumber(value: false).doubleValue, Double(0))
    }
    
    func test_CFBoolean() {
        guard let plist = try? PropertyListSerialization.data(fromPropertyList: ["test" : true], format: .binary, options: 0) else {
            XCTFail()
            return
        }
        guard let obj = (try? PropertyListSerialization.propertyList(from: plist, format: nil)) as? [String : Any] else {
            XCTFail()
            return
        }
        guard let value = obj["test"] else {
            XCTFail()
            return
        }
        guard let boolValue = value as? Bool else {
            XCTFail("Expected de-serialization as round-trip boolean value")
            return
        }
        XCTAssertTrue(boolValue)
    }
    
    func test_numberWithChar() {
        XCTAssertEqual(NSNumber(value: Int8(0)).boolValue, false)
        XCTAssertEqual(NSNumber(value: Int8(0)).int8Value, Int8(0))
        XCTAssertEqual(NSNumber(value: Int8(0)).uint8Value, UInt8(0))
        XCTAssertEqual(NSNumber(value: Int8(0)).int16Value, Int16(0))
        XCTAssertEqual(NSNumber(value: Int8(0)).uint16Value, UInt16(0))
        XCTAssertEqual(NSNumber(value: Int8(0)).int32Value, Int32(0))
        XCTAssertEqual(NSNumber(value: Int8(0)).uint32Value, UInt32(0))
        XCTAssertEqual(NSNumber(value: Int8(0)).int64Value, Int64(0))
        XCTAssertEqual(NSNumber(value: Int8(0)).uint64Value, UInt64(0))
        XCTAssertEqual(NSNumber(value: Int8(-37)).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int8(-37)).int8Value, Int8(-37))
#if !(os(Linux) && (arch(arm) || arch(powerpc64) || arch(powerpc64le)))
        // Linux/arm and Linux/power chars are unsigned, so Int8 in Swift, until this issue is resolved, these tests will always fail.
        XCTAssertEqual(NSNumber(value: Int8(-37)).int16Value, Int16(-37))
        XCTAssertEqual(NSNumber(value: Int8(-37)).int32Value, Int32(-37))
        XCTAssertEqual(NSNumber(value: Int8(-37)).int64Value, Int64(-37))
#endif
        XCTAssertEqual(NSNumber(value: Int8(42)).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int8(42)).int8Value, Int8(42))
        XCTAssertEqual(NSNumber(value: Int8(42)).uint8Value, UInt8(42))
        XCTAssertEqual(NSNumber(value: Int8(42)).int16Value, Int16(42))
        XCTAssertEqual(NSNumber(value: Int8(42)).uint16Value, UInt16(42))
        XCTAssertEqual(NSNumber(value: Int8(42)).int32Value, Int32(42))
        XCTAssertEqual(NSNumber(value: Int8(42)).uint32Value, UInt32(42))
        XCTAssertEqual(NSNumber(value: Int8(42)).int64Value, Int64(42))
        XCTAssertEqual(NSNumber(value: Int8(42)).uint64Value, UInt64(42))
        XCTAssertEqual(NSNumber(value: Int8.max).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int8.max).int8Value, Int8(Int8.max))
        XCTAssertEqual(NSNumber(value: Int8.max).uint8Value, UInt8(Int8.max))
        XCTAssertEqual(NSNumber(value: Int8.max).int16Value, Int16(Int8.max))
        XCTAssertEqual(NSNumber(value: Int8.max).uint16Value, UInt16(Int8.max))
        XCTAssertEqual(NSNumber(value: Int8.max).int32Value, Int32(Int8.max))
        XCTAssertEqual(NSNumber(value: Int8.max).uint32Value, UInt32(Int8.max))
        XCTAssertEqual(NSNumber(value: Int8.max).int64Value, Int64(Int8.max))
        XCTAssertEqual(NSNumber(value: Int8.max).uint64Value, UInt64(Int8.max))
        XCTAssertEqual(NSNumber(value: Int8.min).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int8.min).int8Value, Int8(Int8.min))
#if !(os(Linux) && (arch(arm) || arch(powerpc64) || arch(powerpc64le)))
        // Linux/arm and Linux/power chars are unsigned, so Int8 in Swift, until this issue is resolved, these tests will always fail.
        XCTAssertEqual(NSNumber(value: Int8.min).int16Value, Int16(Int8.min))
        XCTAssertEqual(NSNumber(value: Int8.min).int32Value, Int32(Int8.min))
        XCTAssertEqual(NSNumber(value: Int8.min).int64Value, Int64(Int8.min))
#endif
        XCTAssertEqual(NSNumber(value: Int8(0)).floatValue, Float(0))
#if !(os(Linux) && (arch(arm) || arch(powerpc64) || arch(powerpc64le)))
        // Linux/arm and Linux/power chars are unsigned, so Int8 in Swift, until this issue is resolved, these tests will always fail.
        XCTAssertEqual(NSNumber(value: Int8(-37)).floatValue, Float(-37))
#endif
        XCTAssertEqual(NSNumber(value: Int8(42)).floatValue, Float(42))
        XCTAssertEqual(NSNumber(value: Int8.max).floatValue, Float(Int8.max))
#if !(os(Linux) && (arch(arm) || arch(powerpc64) || arch(powerpc64le)))
        // Linux/arm and Linux/power chars are unsigned, so Int8 in Swift, until this issue is resolved, these tests will always fail.
        XCTAssertEqual(NSNumber(value: Int8.min).floatValue, Float(Int8.min))
#endif
        XCTAssertEqual(NSNumber(value: Int8(0)).doubleValue, Double(0))
#if !(os(Linux) && (arch(arm) || arch(powerpc64) || arch(powerpc64le)))
        // Linux/arm and Linux/power chars are unsigned, so Int8 in Swift, until this issue is resolved, these tests will always fail.
        XCTAssertEqual(NSNumber(value: Int8(-37)).doubleValue, Double(-37))
#endif
        XCTAssertEqual(NSNumber(value: Int8(42)).doubleValue, Double(42))
        XCTAssertEqual(NSNumber(value: Int8.max).doubleValue, Double(Int8.max))
#if !(os(Linux) && (arch(arm) || arch(powerpc64) || arch(powerpc64le)))
        // Linux/arm and Linux/power chars are unsigned, so Int8 in Swift, until this issue is resolved, these tests will always fail.
        XCTAssertEqual(NSNumber(value: Int8.min).doubleValue, Double(Int8.min))
#endif
    }
    
    func test_numberWithUnsignedChar() {
        XCTAssertEqual(NSNumber(value: UInt8(42)).boolValue, true)
        XCTAssertEqual(NSNumber(value: UInt8(42)).int8Value, Int8(42))
        XCTAssertEqual(NSNumber(value: UInt8(42)).uint8Value, UInt8(42))
        XCTAssertEqual(NSNumber(value: UInt8(42)).int16Value, Int16(42))
        XCTAssertEqual(NSNumber(value: UInt8(42)).uint16Value, UInt16(42))
        XCTAssertEqual(NSNumber(value: UInt8(42)).int32Value, Int32(42))
        XCTAssertEqual(NSNumber(value: UInt8(42)).uint32Value, UInt32(42))
        XCTAssertEqual(NSNumber(value: UInt8(42)).int64Value, Int64(42))
        XCTAssertEqual(NSNumber(value: UInt8(42)).uint64Value, UInt64(42))
        XCTAssertEqual(NSNumber(value: UInt8(42)).floatValue, Float(42))
        XCTAssertEqual(NSNumber(value: UInt8(42)).doubleValue, Double(42))

        XCTAssertEqual(NSNumber(value: UInt8.min).boolValue, false)
        XCTAssertEqual(NSNumber(value: UInt8.min).int8Value, Int8(UInt8.min))
        XCTAssertEqual(NSNumber(value: UInt8.min).int16Value, Int16(UInt8.min))
        XCTAssertEqual(NSNumber(value: UInt8.min).int32Value, Int32(UInt8.min))
        XCTAssertEqual(NSNumber(value: UInt8.min).int64Value, Int64(UInt8.min))
        XCTAssertEqual(NSNumber(value: UInt8.min).floatValue, Float(UInt8.min))
        XCTAssertEqual(NSNumber(value: UInt8.min).doubleValue, Double(UInt8.min))

        //--------

        XCTAssertEqual(NSNumber(value: UInt8(0)).boolValue, false)

        XCTAssertEqual(NSNumber(value: UInt8(0)).int8Value, 0)
        XCTAssertEqual(NSNumber(value: UInt8(0)).int16Value, 0)
        XCTAssertEqual(NSNumber(value: UInt8(0)).int32Value, 0)
        XCTAssertEqual(NSNumber(value: UInt8(0)).int64Value, 0)

        XCTAssertEqual(NSNumber(value: UInt8(0)).uint8Value, 0)
        XCTAssertEqual(NSNumber(value: UInt8(0)).uint16Value, 0)
        XCTAssertEqual(NSNumber(value: UInt8(0)).uint32Value, 0)
        XCTAssertEqual(NSNumber(value: UInt8(0)).uint64Value, 0)

        XCTAssertEqual(NSNumber(value: UInt8(0)).intValue, 0)
        XCTAssertEqual(NSNumber(value: UInt8(0)).uintValue, 0)

        XCTAssertEqual(NSNumber(value: UInt8(0)).floatValue, 0)
        XCTAssertEqual(NSNumber(value: UInt8(0)).doubleValue, 0)

        //------

        XCTAssertEqual(NSNumber(value: UInt8.max).boolValue, true)

        XCTAssertEqual(NSNumber(value: UInt8.max).int8Value, -1)
        XCTAssertEqual(NSNumber(value: UInt8.max).int16Value, 255)
        XCTAssertEqual(NSNumber(value: UInt8.max).int32Value, 255)
        XCTAssertEqual(NSNumber(value: UInt8.max).int64Value, 255)

        XCTAssertEqual(NSNumber(value: UInt8.max).uint8Value, 255)
        XCTAssertEqual(NSNumber(value: UInt8.max).uint16Value, 255)
        XCTAssertEqual(NSNumber(value: UInt8.max).uint32Value, 255)
        XCTAssertEqual(NSNumber(value: UInt8.max).uint64Value, 255)

        XCTAssertEqual(NSNumber(value: UInt8.max).intValue, 255)
        XCTAssertEqual(NSNumber(value: UInt8.max).uintValue, 255)

        XCTAssertEqual(NSNumber(value: UInt8.max).floatValue, Float(UInt8.max))
        XCTAssertEqual(NSNumber(value: UInt8.max).doubleValue, Double(UInt8.max))
    }
    
    func test_numberWithShort() {
        XCTAssertEqual(NSNumber(value: Int16(0)).boolValue, false)
        XCTAssertEqual(NSNumber(value: Int16(0)).int8Value, Int8(0))
        XCTAssertEqual(NSNumber(value: Int16(0)).uint8Value, UInt8(0))
        XCTAssertEqual(NSNumber(value: Int16(0)).int16Value, Int16(0))
        XCTAssertEqual(NSNumber(value: Int16(0)).uint16Value, UInt16(0))
        XCTAssertEqual(NSNumber(value: Int16(0)).int32Value, Int32(0))
        XCTAssertEqual(NSNumber(value: Int16(0)).uint32Value, UInt32(0))
        XCTAssertEqual(NSNumber(value: Int16(0)).int64Value, Int64(0))
        XCTAssertEqual(NSNumber(value: Int16(0)).uint64Value, UInt64(0))
        XCTAssertEqual(NSNumber(value: Int16(-37)).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int16(-37)).int8Value, Int8(-37))
        XCTAssertEqual(NSNumber(value: Int16(-37)).int16Value, Int16(-37))
        XCTAssertEqual(NSNumber(value: Int16(-37)).int32Value, Int32(-37))
        XCTAssertEqual(NSNumber(value: Int16(-37)).int64Value, Int64(-37))
        XCTAssertEqual(NSNumber(value: Int16(42)).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int16(42)).int8Value, Int8(42))
        XCTAssertEqual(NSNumber(value: Int16(42)).uint8Value, UInt8(42))
        XCTAssertEqual(NSNumber(value: Int16(42)).int16Value, Int16(42))
        XCTAssertEqual(NSNumber(value: Int16(42)).uint16Value, UInt16(42))
        XCTAssertEqual(NSNumber(value: Int16(42)).int32Value, Int32(42))
        XCTAssertEqual(NSNumber(value: Int16(42)).uint32Value, UInt32(42))
        XCTAssertEqual(NSNumber(value: Int16(42)).int64Value, Int64(42))
        XCTAssertEqual(NSNumber(value: Int16(42)).uint64Value, UInt64(42))
        XCTAssertEqual(NSNumber(value: Int16.max).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int16.min).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int16(0)).floatValue, Float(0))
        XCTAssertEqual(NSNumber(value: Int16(-37)).floatValue, Float(-37))
        XCTAssertEqual(NSNumber(value: Int16(42)).floatValue, Float(42))
        XCTAssertEqual(NSNumber(value: Int16(0)).doubleValue, Double(0))
        XCTAssertEqual(NSNumber(value: Int16(-37)).doubleValue, Double(-37))
        XCTAssertEqual(NSNumber(value: Int16(42)).doubleValue, Double(42))

        //------

        XCTAssertEqual(NSNumber(value: Int16(0)).boolValue, false)

        XCTAssertEqual(NSNumber(value: Int16(0)).int8Value, 0)
        XCTAssertEqual(NSNumber(value: Int16(0)).int16Value, 0)
        XCTAssertEqual(NSNumber(value: Int16(0)).int32Value, 0)
        XCTAssertEqual(NSNumber(value: Int16(0)).int64Value, 0)

        XCTAssertEqual(NSNumber(value: Int16(0)).uint8Value, 0)
        XCTAssertEqual(NSNumber(value: Int16(0)).uint16Value, 0)
        XCTAssertEqual(NSNumber(value: Int16(0)).uint32Value, 0)
        XCTAssertEqual(NSNumber(value: Int16(0)).uint64Value, 0)

        XCTAssertEqual(NSNumber(value: Int16(0)).intValue, 0)
        XCTAssertEqual(NSNumber(value: Int16(0)).uintValue, 0)

        XCTAssertEqual(NSNumber(value: Int16(0)).floatValue, 0)
        XCTAssertEqual(NSNumber(value: Int16(0)).doubleValue, 0)

        //------

        XCTAssertEqual(NSNumber(value: Int16.min).boolValue, true)

        XCTAssertEqual(NSNumber(value: Int16.min).int8Value, 0)
        XCTAssertEqual(NSNumber(value: Int16.min).int16Value, -32768)
        XCTAssertEqual(NSNumber(value: Int16.min).int32Value, -32768)
        XCTAssertEqual(NSNumber(value: Int16.min).int64Value, -32768)

        XCTAssertEqual(NSNumber(value: Int16.min).uint8Value, 0)
        XCTAssertEqual(NSNumber(value: Int16.min).uint16Value, 32768)
        XCTAssertEqual(NSNumber(value: Int16.min).uint32Value, 4294934528)
        XCTAssertEqual(NSNumber(value: Int16.min).uint64Value, 18446744073709518848)

        XCTAssertEqual(NSNumber(value: Int16.min).intValue, -32768)
        let uintSize = MemoryLayout<UInt>.size
        switch uintSize {
        case 4: XCTAssertEqual(NSNumber(value: Int16.min).uintValue, 4294934528)
        case 8:
#if arch(arm)
                break
#else
                XCTAssertEqual(NSNumber(value: Int16.min).uintValue, 18446744073709518848)
#endif
        default: XCTFail("Unexpected UInt size: \(uintSize)")
        }

        XCTAssertEqual(NSNumber(value: Int16.min).floatValue, Float(Int16.min))
        XCTAssertEqual(NSNumber(value: Int16.min).doubleValue, Double(Int16.min))

        //------

        XCTAssertEqual(NSNumber(value: Int16.max).boolValue, true)

        XCTAssertEqual(NSNumber(value: Int16.max).int8Value, -1)
        XCTAssertEqual(NSNumber(value: Int16.max).int16Value, 32767)
        XCTAssertEqual(NSNumber(value: Int16.max).int32Value, 32767)
        XCTAssertEqual(NSNumber(value: Int16.max).int64Value, 32767)

        XCTAssertEqual(NSNumber(value: Int16.max).uint8Value, 255)
        XCTAssertEqual(NSNumber(value: Int16.max).uint16Value, 32767)
        XCTAssertEqual(NSNumber(value: Int16.max).uint32Value, 32767)
        XCTAssertEqual(NSNumber(value: Int16.max).uint64Value, 32767)

        XCTAssertEqual(NSNumber(value: Int16.max).intValue, 32767)
        XCTAssertEqual(NSNumber(value: Int16.max).uintValue, 32767)

        XCTAssertEqual(NSNumber(value: Int16.max).floatValue, Float(Int16.max))
        XCTAssertEqual(NSNumber(value: Int16.max).doubleValue, Double(Int16.max))
    }

    func test_numberWithUnsignedShort() {
        XCTAssertEqual(NSNumber(value: UInt16(0)).boolValue, false)

        XCTAssertEqual(NSNumber(value: UInt16(0)).int8Value, 0)
        XCTAssertEqual(NSNumber(value: UInt16(0)).int16Value, 0)
        XCTAssertEqual(NSNumber(value: UInt16(0)).int32Value, 0)
        XCTAssertEqual(NSNumber(value: UInt16(0)).int64Value, 0)

        XCTAssertEqual(NSNumber(value: UInt16(0)).uint8Value, 0)
        XCTAssertEqual(NSNumber(value: UInt16(0)).uint16Value, 0)
        XCTAssertEqual(NSNumber(value: UInt16(0)).uint32Value, 0)
        XCTAssertEqual(NSNumber(value: UInt16(0)).uint64Value, 0)

        XCTAssertEqual(NSNumber(value: UInt16(0)).intValue, 0)
        XCTAssertEqual(NSNumber(value: UInt16(0)).uintValue, 0)

        XCTAssertEqual(NSNumber(value: UInt16(0)).floatValue, 0.0)
        XCTAssertEqual(NSNumber(value: UInt16(0)).doubleValue, 0.0)

        //------

        XCTAssertEqual(NSNumber(value: UInt16.max).boolValue, true)

        XCTAssertEqual(NSNumber(value: UInt16.max).int8Value, -1)
        XCTAssertEqual(NSNumber(value: UInt16.max).int16Value, -1)
        XCTAssertEqual(NSNumber(value: UInt16.max).int32Value, 65535)
        XCTAssertEqual(NSNumber(value: UInt16.max).int64Value, 65535)

        XCTAssertEqual(NSNumber(value: UInt16.max).uint8Value, 255)
        XCTAssertEqual(NSNumber(value: UInt16.max).uint16Value, 65535)
        XCTAssertEqual(NSNumber(value: UInt16.max).uint32Value, 65535)
        XCTAssertEqual(NSNumber(value: UInt16.max).uint64Value, 65535)

        XCTAssertEqual(NSNumber(value: UInt16.max).intValue, 65535)
        XCTAssertEqual(NSNumber(value: UInt16.max).uintValue, 65535)

        XCTAssertEqual(NSNumber(value: UInt16.max).floatValue, Float(UInt16.max))
        XCTAssertEqual(NSNumber(value: UInt16.max).doubleValue, Double(UInt16.max))
    }

    func test_numberWithLong() {
        XCTAssertEqual(NSNumber(value: Int32(0)).boolValue, false)

        XCTAssertEqual(NSNumber(value: Int32(0)).int8Value, 0)
        XCTAssertEqual(NSNumber(value: Int32(0)).int16Value, 0)
        XCTAssertEqual(NSNumber(value: Int32(0)).int32Value, 0)
        XCTAssertEqual(NSNumber(value: Int32(0)).int64Value, 0)

        XCTAssertEqual(NSNumber(value: Int32(0)).uint8Value, 0)
        XCTAssertEqual(NSNumber(value: Int32(0)).uint16Value, 0)
        XCTAssertEqual(NSNumber(value: Int32(0)).uint32Value, 0)
        XCTAssertEqual(NSNumber(value: Int32(0)).uint64Value, 0)

        XCTAssertEqual(NSNumber(value: Int32(0)).intValue, 0)
        XCTAssertEqual(NSNumber(value: Int32(0)).uintValue, 0)

        XCTAssertEqual(NSNumber(value: Int32(0)).floatValue, 0)
        XCTAssertEqual(NSNumber(value: Int32(0)).doubleValue, 0)

        //------

        XCTAssertEqual(NSNumber(value: Int32.min).boolValue, true)

        XCTAssertEqual(NSNumber(value: Int32.min).int8Value, 0)
        XCTAssertEqual(NSNumber(value: Int32.min).int16Value, 0)
        XCTAssertEqual(NSNumber(value: Int32.min).int32Value, -2147483648)
        XCTAssertEqual(NSNumber(value: Int32.min).int64Value, -2147483648)

        XCTAssertEqual(NSNumber(value: Int32.min).uint8Value, 0)
        XCTAssertEqual(NSNumber(value: Int32.min).uint16Value, 0)
        XCTAssertEqual(NSNumber(value: Int32.min).uint32Value, 2147483648)
        XCTAssertEqual(NSNumber(value: Int32.min).uint64Value, 18446744071562067968)

        XCTAssertEqual(NSNumber(value: Int32.min).intValue, -2147483648)
        let uintSize = MemoryLayout<UInt>.size
        switch uintSize {
        case 4: XCTAssertEqual(NSNumber(value: Int32.min).uintValue, 2147483648)
        case 8:
#if arch(arm)
                break
#else
                XCTAssertEqual(NSNumber(value: Int32.min).uintValue, 18446744071562067968)
#endif
        default: XCTFail("Unexpected UInt size: \(uintSize)")
        }

        XCTAssertEqual(NSNumber(value: Int32.min).floatValue, Float(Int32.min))
        XCTAssertEqual(NSNumber(value: Int32.min).doubleValue, Double(Int32.min))

        //------

        XCTAssertEqual(NSNumber(value: Int32.max).boolValue, true)

        XCTAssertEqual(NSNumber(value: Int32.max).int8Value, -1)
        XCTAssertEqual(NSNumber(value: Int32.max).int16Value, -1)
        XCTAssertEqual(NSNumber(value: Int32.max).int32Value, 2147483647)
        XCTAssertEqual(NSNumber(value: Int32.max).int64Value, 2147483647)

        XCTAssertEqual(NSNumber(value: Int32.max).uint8Value, 255)
        XCTAssertEqual(NSNumber(value: Int32.max).uint16Value, 65535)
        XCTAssertEqual(NSNumber(value: Int32.max).uint32Value, 2147483647)
        XCTAssertEqual(NSNumber(value: Int32.max).uint64Value, 2147483647)

        XCTAssertEqual(NSNumber(value: Int32.max).intValue, 2147483647)
        XCTAssertEqual(NSNumber(value: Int32.max).uintValue, 2147483647)

        XCTAssertEqual(NSNumber(value: Int32.max).floatValue, Float(Int32.max))
        XCTAssertEqual(NSNumber(value: Int32.max).doubleValue, Double(Int32.max))
    }

    func test_numberWithUnsignedLong() {
        XCTAssertEqual(NSNumber(value: UInt32(0)).boolValue, false)

        XCTAssertEqual(NSNumber(value: UInt32(0)).int8Value, 0)
        XCTAssertEqual(NSNumber(value: UInt32(0)).int16Value, 0)
        XCTAssertEqual(NSNumber(value: UInt32(0)).int32Value, 0)
        XCTAssertEqual(NSNumber(value: UInt32(0)).int64Value, 0)

        XCTAssertEqual(NSNumber(value: UInt32(0)).uint8Value, 0)
        XCTAssertEqual(NSNumber(value: UInt32(0)).uint16Value, 0)
        XCTAssertEqual(NSNumber(value: UInt32(0)).uint32Value, 0)
        XCTAssertEqual(NSNumber(value: UInt32(0)).uint64Value, 0)

        XCTAssertEqual(NSNumber(value: UInt32(0)).intValue, 0)
        XCTAssertEqual(NSNumber(value: UInt32(0)).uintValue, 0)

        XCTAssertEqual(NSNumber(value: UInt32(0)).floatValue, 0.0)
        XCTAssertEqual(NSNumber(value: UInt32(0)).doubleValue, 0.0)

        //------

        XCTAssertEqual(NSNumber(value: UInt32.max).boolValue, true)

        XCTAssertEqual(NSNumber(value: UInt32.max).int8Value, -1)
        XCTAssertEqual(NSNumber(value: UInt32.max).int16Value, -1)
        XCTAssertEqual(NSNumber(value: UInt32.max).int32Value, -1)
        XCTAssertEqual(NSNumber(value: UInt32.max).int64Value, 4294967295)

        XCTAssertEqual(NSNumber(value: UInt32.max).uint8Value, 255)
        XCTAssertEqual(NSNumber(value: UInt32.max).uint16Value, 65535)
        XCTAssertEqual(NSNumber(value: UInt32.max).uint32Value, 4294967295)
        XCTAssertEqual(NSNumber(value: UInt32.max).uint64Value, 4294967295)

        let intSize = MemoryLayout<Int>.size
        switch intSize {
        case 4: XCTAssertEqual(NSNumber(value: UInt32.max).intValue, -1)
        case 8:
#if arch(arm)
                break
#else
                XCTAssertEqual(NSNumber(value: UInt32.max).intValue, 4294967295)
#endif
        default: XCTFail("Unexpected Int size: \(intSize)")
        }
        XCTAssertEqual(NSNumber(value: UInt32.max).uintValue, 4294967295)

        XCTAssertEqual(NSNumber(value: UInt32.max).floatValue, Float(UInt32.max))
        XCTAssertEqual(NSNumber(value: UInt32.max).doubleValue, Double(UInt32.max))
    }

    func test_numberWithLongLong() {
        XCTAssertEqual(NSNumber(value: Int64(0)).boolValue, false)

        XCTAssertEqual(NSNumber(value: Int64(0)).int8Value, 0)
        XCTAssertEqual(NSNumber(value: Int64(0)).int16Value, 0)
        XCTAssertEqual(NSNumber(value: Int64(0)).int32Value, 0)
        XCTAssertEqual(NSNumber(value: Int64(0)).int64Value, 0)

        XCTAssertEqual(NSNumber(value: Int64(0)).uint8Value, 0)
        XCTAssertEqual(NSNumber(value: Int64(0)).uint16Value, 0)
        XCTAssertEqual(NSNumber(value: Int64(0)).uint32Value, 0)
        XCTAssertEqual(NSNumber(value: Int64(0)).uint64Value, 0)

        XCTAssertEqual(NSNumber(value: Int64(0)).intValue, 0)
        XCTAssertEqual(NSNumber(value: Int64(0)).uintValue, 0)

        XCTAssertEqual(NSNumber(value: Int64(0)).floatValue, 0)
        XCTAssertEqual(NSNumber(value: Int64(0)).doubleValue, 0)

        //------

        XCTAssertEqual(NSNumber(value: Int64.min).boolValue, false)

        XCTAssertEqual(NSNumber(value: Int64.min).int8Value, 0)
        XCTAssertEqual(NSNumber(value: Int64.min).int16Value, 0)
        XCTAssertEqual(NSNumber(value: Int64.min).int32Value, 0)
        XCTAssertEqual(NSNumber(value: Int64.min).int64Value, -9223372036854775808)

        XCTAssertEqual(NSNumber(value: Int64.min).uint8Value, 0)
        XCTAssertEqual(NSNumber(value: Int64.min).uint16Value, 0)
        XCTAssertEqual(NSNumber(value: Int64.min).uint32Value, 0)
        XCTAssertEqual(NSNumber(value: Int64.min).uint64Value, 9223372036854775808)

        let intSize = MemoryLayout<Int>.size
        switch intSize {
        case 4: XCTAssertEqual(NSNumber(value: Int64.min).intValue, 0)
        case 8:
#if arch(arm)
                break
#else
                XCTAssertEqual(NSNumber(value: Int64.min).intValue, -9223372036854775808)
#endif
        default: XCTFail("Unexpected Int size: \(intSize)")
        }

        let uintSize = MemoryLayout<UInt>.size
        switch uintSize {
        case 4: XCTAssertEqual(NSNumber(value: Int64.min).uintValue, 0)
        case 8:
#if arch(arm)
                break
#else
                XCTAssertEqual(NSNumber(value: Int64.min).uintValue, 9223372036854775808)
#endif
        default: XCTFail("Unexpected UInt size: \(uintSize)")
        }

        XCTAssertEqual(NSNumber(value: Int64.min).floatValue, Float(Int64.min))
        XCTAssertEqual(NSNumber(value: Int64.min).doubleValue, Double(Int64.min))

        //------

        XCTAssertEqual(NSNumber(value: Int64.max).boolValue, true)

        XCTAssertEqual(NSNumber(value: Int64.max).int8Value, -1)
        XCTAssertEqual(NSNumber(value: Int64.max).int16Value, -1)
        XCTAssertEqual(NSNumber(value: Int64.max).int32Value, -1)
        XCTAssertEqual(NSNumber(value: Int64.max).int64Value, 9223372036854775807)

        XCTAssertEqual(NSNumber(value: Int64.max).uint8Value, 255)
        XCTAssertEqual(NSNumber(value: Int64.max).uint16Value, 65535)
        XCTAssertEqual(NSNumber(value: Int64.max).uint32Value, 4294967295)
        XCTAssertEqual(NSNumber(value: Int64.max).uint64Value, 9223372036854775807)

        switch intSize {
        case 4: XCTAssertEqual(NSNumber(value: Int64.max).intValue, -1)
        case 8:
#if arch(arm)
                break
#else
                XCTAssertEqual(NSNumber(value: Int64.max).intValue, 9223372036854775807)
#endif
        default: XCTFail("Unexpected Int size: \(intSize)")
        }

        switch uintSize {
        case 4: XCTAssertEqual(NSNumber(value: Int64.max).uintValue, 4294967295)
        case 8:
#if arch(arm)
                break
#else
                XCTAssertEqual(NSNumber(value: Int64.max).uintValue, 9223372036854775807)
#endif
        default: XCTFail("Unexpected UInt size: \(uintSize)")
        }

        XCTAssertEqual(NSNumber(value: Int64.max).floatValue, Float(Int64.max))
        XCTAssertEqual(NSNumber(value: Int64.max).doubleValue, Double(Int64.max))
    }

    func test_numberWithUnsignedLongLong() {
        XCTAssertEqual(NSNumber(value: UInt64(0)).boolValue, false)

        XCTAssertEqual(NSNumber(value: UInt64(0)).int8Value, 0)
        XCTAssertEqual(NSNumber(value: UInt64(0)).int16Value, 0)
        XCTAssertEqual(NSNumber(value: UInt64(0)).int32Value, 0)
        XCTAssertEqual(NSNumber(value: UInt64(0)).int64Value, 0)

        XCTAssertEqual(NSNumber(value: UInt64(0)).uint8Value, 0)
        XCTAssertEqual(NSNumber(value: UInt64(0)).uint16Value, 0)
        XCTAssertEqual(NSNumber(value: UInt64(0)).uint32Value, 0)
        XCTAssertEqual(NSNumber(value: UInt64(0)).uint64Value, 0)

        XCTAssertEqual(NSNumber(value: UInt64(0)).intValue, 0)
        XCTAssertEqual(NSNumber(value: UInt64(0)).uintValue, 0)

        XCTAssertEqual(NSNumber(value: UInt64(0)).floatValue, 0.0)
        XCTAssertEqual(NSNumber(value: UInt64(0)).doubleValue, 0.0)

        //------

        XCTAssertEqual(NSNumber(value: UInt64.max).boolValue, true)

        XCTAssertEqual(NSNumber(value: UInt64.max).int8Value, -1)
        XCTAssertEqual(NSNumber(value: UInt64.max).int16Value, -1)
        XCTAssertEqual(NSNumber(value: UInt64.max).int32Value, -1)
        XCTAssertEqual(NSNumber(value: UInt64.max).int64Value, -1)

        XCTAssertEqual(NSNumber(value: UInt64.max).uint8Value, 255)
        XCTAssertEqual(NSNumber(value: UInt64.max).uint16Value, 65535)
        XCTAssertEqual(NSNumber(value: UInt64.max).uint32Value, 4294967295)
        XCTAssertEqual(NSNumber(value: UInt64.max).uint64Value, 18446744073709551615)

        XCTAssertEqual(NSNumber(value: UInt64.max).intValue, -1)
        let uintSize = MemoryLayout<UInt>.size
        switch uintSize {
        case 4: XCTAssertEqual(NSNumber(value: UInt64.max).uintValue, 4294967295)
        case 8:
#if arch(arm)
                break
#else
                XCTAssertEqual(NSNumber(value: UInt64.max).uintValue, 18446744073709551615)
#endif
        default: XCTFail("Unexpected UInt size: \(uintSize)")
        }

        XCTAssertEqual(NSNumber(value: UInt64.max).floatValue, Float(UInt64.max))
        XCTAssertEqual(NSNumber(value: UInt64.max).doubleValue, Double(UInt64.max))
    }

    func test_numberWithInt() {
        XCTAssertEqual(NSNumber(value: Int(0)).boolValue, false)

        XCTAssertEqual(NSNumber(value: Int(0)).int8Value, 0)
        XCTAssertEqual(NSNumber(value: Int(0)).int16Value, 0)
        XCTAssertEqual(NSNumber(value: Int(0)).int32Value, 0)
        XCTAssertEqual(NSNumber(value: Int(0)).int64Value, 0)

        XCTAssertEqual(NSNumber(value: Int(0)).uint8Value, 0)
        XCTAssertEqual(NSNumber(value: Int(0)).uint16Value, 0)
        XCTAssertEqual(NSNumber(value: Int(0)).uint32Value, 0)
        XCTAssertEqual(NSNumber(value: Int(0)).uint64Value, 0)

        XCTAssertEqual(NSNumber(value: Int(0)).intValue, 0)
        XCTAssertEqual(NSNumber(value: Int(0)).uintValue, 0)

        XCTAssertEqual(NSNumber(value: Int(0)).floatValue, 0)
        XCTAssertEqual(NSNumber(value: Int(0)).doubleValue, 0)

        //------

        let intSize = MemoryLayout<Int>.size
        let uintSize = MemoryLayout<UInt>.size
        switch (intSize, uintSize) {
        case (4, 4):
            XCTAssertEqual(NSNumber(value: Int.min).boolValue, true)

            XCTAssertEqual(NSNumber(value: Int.min).int8Value, 0)
            XCTAssertEqual(NSNumber(value: Int.min).int16Value, 0)
            XCTAssertEqual(NSNumber(value: Int.min).int32Value, -2147483648)
            XCTAssertEqual(NSNumber(value: Int.min).int64Value, -2147483648)

            XCTAssertEqual(NSNumber(value: Int.min).uint8Value, 0)
            XCTAssertEqual(NSNumber(value: Int.min).uint16Value, 0)
            XCTAssertEqual(NSNumber(value: Int.min).uint32Value, 2147483648)
            XCTAssertEqual(NSNumber(value: Int.min).uint64Value, 18446744071562067968)

            XCTAssertEqual(NSNumber(value: Int.min).intValue, -2147483648)
#if !arch(arm)
            XCTAssertEqual(NSNumber(value: Int.min).uintValue, 18446744071562067968)
#endif
            XCTAssertEqual(NSNumber(value: Int.min).floatValue, Float(Int.min))
            XCTAssertEqual(NSNumber(value: Int.min).doubleValue, Double(Int.min))

            //--------

            XCTAssertEqual(NSNumber(value: Int.max).boolValue, true)

            XCTAssertEqual(NSNumber(value: Int.max).int8Value, -1)
            XCTAssertEqual(NSNumber(value: Int.max).int16Value, -1)
            XCTAssertEqual(NSNumber(value: Int.max).int32Value, 2147483647)
            XCTAssertEqual(NSNumber(value: Int.max).int64Value, 2147483647)

            XCTAssertEqual(NSNumber(value: Int.max).uint8Value, 255)
            XCTAssertEqual(NSNumber(value: Int.max).uint16Value, 65535)
            XCTAssertEqual(NSNumber(value: Int.max).uint32Value, 2147483647)
            XCTAssertEqual(NSNumber(value: Int.max).uint64Value, 2147483647)

            XCTAssertEqual(NSNumber(value: Int.max).intValue, 2147483647)
            XCTAssertEqual(NSNumber(value: Int.max).uintValue, 2147483647)

            XCTAssertEqual(NSNumber(value: Int.max).floatValue, Float(Int.max))
            XCTAssertEqual(NSNumber(value: Int.max).doubleValue, Double(Int.max))

        case (8, 8):
#if arch(arm)
            break
#else
            XCTAssertEqual(NSNumber(value: Int.min).boolValue, false)

            XCTAssertEqual(NSNumber(value: Int.min).int8Value, 0)
            XCTAssertEqual(NSNumber(value: Int.min).int16Value, 0)
            XCTAssertEqual(NSNumber(value: Int.min).int32Value, 0)
            XCTAssertEqual(NSNumber(value: Int.min).int64Value, -9223372036854775808)

            XCTAssertEqual(NSNumber(value: Int.min).uint8Value, 0)
            XCTAssertEqual(NSNumber(value: Int.min).uint16Value, 0)
            XCTAssertEqual(NSNumber(value: Int.min).uint32Value, 0)
            XCTAssertEqual(NSNumber(value: Int.min).uint64Value, 9223372036854775808)

            XCTAssertEqual(NSNumber(value: Int.min).intValue, -9223372036854775808)
            XCTAssertEqual(NSNumber(value: Int.min).uintValue, 9223372036854775808)

            XCTAssertEqual(NSNumber(value: Int.min).floatValue, Float(Int.min))
            XCTAssertEqual(NSNumber(value: Int.min).doubleValue, Double(Int.min))

            //--------

            XCTAssertEqual(NSNumber(value: Int.max).boolValue, true)

            XCTAssertEqual(NSNumber(value: Int.max).int8Value, -1)
            XCTAssertEqual(NSNumber(value: Int.max).int16Value, -1)
            XCTAssertEqual(NSNumber(value: Int.max).int32Value, -1)
            XCTAssertEqual(NSNumber(value: Int.max).int64Value, 9223372036854775807)

            XCTAssertEqual(NSNumber(value: Int.max).uint8Value, 255)
            XCTAssertEqual(NSNumber(value: Int.max).uint16Value, 65535)
            XCTAssertEqual(NSNumber(value: Int.max).uint32Value, 4294967295)
            XCTAssertEqual(NSNumber(value: Int.max).uint64Value, 9223372036854775807)

            XCTAssertEqual(NSNumber(value: Int.max).intValue, 9223372036854775807)
            XCTAssertEqual(NSNumber(value: Int.max).uintValue, 9223372036854775807)

            XCTAssertEqual(NSNumber(value: Int.max).floatValue, Float(Int.max))
            XCTAssertEqual(NSNumber(value: Int.max).doubleValue, Double(Int.max))
#endif
        default: XCTFail("Unexpected mismatched Int & UInt sizes: \(intSize) & \(uintSize)")
        }
    }

    func test_numberWithUInt() {
        XCTAssertEqual(NSNumber(value: UInt(0)).boolValue, false)

        XCTAssertEqual(NSNumber(value: UInt(0)).int8Value, 0)
        XCTAssertEqual(NSNumber(value: UInt(0)).int16Value, 0)
        XCTAssertEqual(NSNumber(value: UInt(0)).int32Value, 0)
        XCTAssertEqual(NSNumber(value: UInt(0)).int64Value, 0)

        XCTAssertEqual(NSNumber(value: UInt(0)).uint8Value, 0)
        XCTAssertEqual(NSNumber(value: UInt(0)).uint16Value, 0)
        XCTAssertEqual(NSNumber(value: UInt(0)).uint32Value, 0)
        XCTAssertEqual(NSNumber(value: UInt(0)).uint64Value, 0)

        XCTAssertEqual(NSNumber(value: UInt(0)).intValue, 0)
        XCTAssertEqual(NSNumber(value: UInt(0)).uintValue, 0)

        XCTAssertEqual(NSNumber(value: UInt(0)).floatValue, 0)
        XCTAssertEqual(NSNumber(value: UInt(0)).doubleValue, 0)

        //------

        let intSize = MemoryLayout<Int>.size
        let uintSize = MemoryLayout<UInt>.size
        switch (intSize, uintSize) {
        case (4, 4):
            XCTAssertEqual(NSNumber(value: UInt.max).boolValue, true)

            XCTAssertEqual(NSNumber(value: UInt.max).int8Value, -1)
            XCTAssertEqual(NSNumber(value: UInt.max).int16Value, -1)
            XCTAssertEqual(NSNumber(value: UInt.max).int32Value, -1)
            XCTAssertEqual(NSNumber(value: UInt.max).int64Value, 4294967295)

            XCTAssertEqual(NSNumber(value: UInt.max).uint8Value, 255)
            XCTAssertEqual(NSNumber(value: UInt.max).uint16Value, 65535)
            XCTAssertEqual(NSNumber(value: UInt.max).uint32Value, 4294967295)
            XCTAssertEqual(NSNumber(value: UInt.max).uint64Value, 4294967295)

#if !arch(arm)
            XCTAssertEqual(NSNumber(value: UInt.max).intValue, 4294967295)
#endif
            XCTAssertEqual(NSNumber(value: UInt.max).uintValue, 4294967295)

            XCTAssertEqual(NSNumber(value: UInt.max).floatValue, Float(UInt.max))
            XCTAssertEqual(NSNumber(value: UInt.max).doubleValue, Double(UInt.max))

        case (8, 8):
            XCTAssertEqual(NSNumber(value: UInt.max).boolValue, true)

            XCTAssertEqual(NSNumber(value: UInt.max).int8Value, -1)
            XCTAssertEqual(NSNumber(value: UInt.max).int16Value, -1)
            XCTAssertEqual(NSNumber(value: UInt.max).int32Value, -1)
            XCTAssertEqual(NSNumber(value: UInt.max).int64Value, -1)

            XCTAssertEqual(NSNumber(value: UInt.max).uint8Value, 255)
            XCTAssertEqual(NSNumber(value: UInt.max).uint16Value, 65535)
            XCTAssertEqual(NSNumber(value: UInt.max).uint32Value, 4294967295)
            XCTAssertEqual(NSNumber(value: UInt.max).uint64Value, 18446744073709551615)

            XCTAssertEqual(NSNumber(value: UInt.max).intValue, -1)
#if !arch(arm)
            XCTAssertEqual(NSNumber(value: UInt.max).uintValue, 18446744073709551615)
#endif

            XCTAssertEqual(NSNumber(value: UInt.max).floatValue, Float(UInt.max))
            XCTAssertEqual(NSNumber(value: UInt.max).doubleValue, Double(UInt.max))
            
        default: XCTFail("Unexpected mismatched Int & UInt sizes: \(intSize) & \(uintSize)")
        }
    }

    func test_numberWithFloat() {
        XCTAssertEqual(NSNumber(value: Float(0)).boolValue, false)
        XCTAssertEqual(NSNumber(value: Float(0)).int8Value, Int8(0))
        XCTAssertEqual(NSNumber(value: Float(0)).uint8Value, UInt8(0))
        XCTAssertEqual(NSNumber(value: Float(0)).int16Value, Int16(0))
        XCTAssertEqual(NSNumber(value: Float(0)).uint16Value, UInt16(0))
        XCTAssertEqual(NSNumber(value: Float(0)).int32Value, Int32(0))
        XCTAssertEqual(NSNumber(value: Float(0)).uint32Value, UInt32(0))
        XCTAssertEqual(NSNumber(value: Float(0)).int64Value, Int64(0))
        XCTAssertEqual(NSNumber(value: Float(0)).uint64Value, UInt64(0))
        XCTAssertEqual(NSNumber(value: Float(1)).boolValue, true)
        XCTAssertEqual(NSNumber(value: Float(1)).int8Value, Int8(1))
        XCTAssertEqual(NSNumber(value: Float(1)).uint8Value, UInt8(1))
        XCTAssertEqual(NSNumber(value: Float(1)).int16Value, Int16(1))
        XCTAssertEqual(NSNumber(value: Float(1)).uint16Value, UInt16(1))
        XCTAssertEqual(NSNumber(value: Float(1)).int32Value, Int32(1))
        XCTAssertEqual(NSNumber(value: Float(1)).uint32Value, UInt32(1))
        XCTAssertEqual(NSNumber(value: Float(1)).int64Value, Int64(1))
        XCTAssertEqual(NSNumber(value: Float(1)).uint64Value, UInt64(1))
        XCTAssertEqual(NSNumber(value: Float(-37)).boolValue, true)
        XCTAssertEqual(NSNumber(value: Float(-37)).int8Value, Int8(-37))
        XCTAssertEqual(NSNumber(value: Float(-37)).int16Value, Int16(-37))
        XCTAssertEqual(NSNumber(value: Float(-37)).int32Value, Int32(-37))
        XCTAssertEqual(NSNumber(value: Float(-37)).int64Value, Int64(-37))
        XCTAssertEqual(NSNumber(value: Float(42)).boolValue, true)
        XCTAssertEqual(NSNumber(value: Float(42)).int8Value, Int8(42))
        XCTAssertEqual(NSNumber(value: Float(42)).uint8Value, UInt8(42))
        XCTAssertEqual(NSNumber(value: Float(42)).int16Value, Int16(42))
        XCTAssertEqual(NSNumber(value: Float(42)).uint16Value, UInt16(42))
        XCTAssertEqual(NSNumber(value: Float(42)).int32Value, Int32(42))
        XCTAssertEqual(NSNumber(value: Float(42)).uint32Value, UInt32(42))
        XCTAssertEqual(NSNumber(value: Float(42)).int64Value, Int64(42))
        XCTAssertEqual(NSNumber(value: Float(42)).uint64Value, UInt64(42))
        XCTAssertEqual(NSNumber(value: Float(0)).floatValue, Float(0))
        XCTAssertEqual(NSNumber(value: Float(1)).floatValue, Float(1))
        XCTAssertEqual(NSNumber(value: Float(-37.5)).floatValue, Float(-37.5))
        XCTAssertEqual(NSNumber(value: Float(42.1)).floatValue, Float(42.1))
        XCTAssertEqual(NSNumber(value: Float(0)).doubleValue, Double(0))
        XCTAssertEqual(NSNumber(value: Float(1)).doubleValue, Double(1))
        XCTAssertEqual(NSNumber(value: Float(-37.5)).doubleValue, Double(-37.5))
        XCTAssertEqual(NSNumber(value: Float(42.5)).doubleValue, Double(42.5))

        let nanFloat = NSNumber(value: Float.nan)
        XCTAssertTrue(nanFloat.doubleValue.isNaN)
    }
    
    func test_numberWithDouble() {
        XCTAssertEqual(NSNumber(value: Double(0)).boolValue, false)
        XCTAssertEqual(NSNumber(value: Double(0)).int8Value, Int8(0))
        XCTAssertEqual(NSNumber(value: Double(0)).uint8Value, UInt8(0))
        XCTAssertEqual(NSNumber(value: Double(0)).int16Value, Int16(0))
        XCTAssertEqual(NSNumber(value: Double(0)).uint16Value, UInt16(0))
        XCTAssertEqual(NSNumber(value: Double(0)).int32Value, Int32(0))
        XCTAssertEqual(NSNumber(value: Double(0)).uint32Value, UInt32(0))
        XCTAssertEqual(NSNumber(value: Double(0)).int64Value, Int64(0))
        XCTAssertEqual(NSNumber(value: Double(0)).uint64Value, UInt64(0))
        XCTAssertEqual(NSNumber(value: Double(-37)).boolValue, true)
        XCTAssertEqual(NSNumber(value: Double(-37)).int8Value, Int8(-37))
        XCTAssertEqual(NSNumber(value: Double(-37)).int16Value, Int16(-37))
        XCTAssertEqual(NSNumber(value: Double(-37)).int32Value, Int32(-37))
        XCTAssertEqual(NSNumber(value: Double(-37)).int64Value, Int64(-37))
        XCTAssertEqual(NSNumber(value: Double(42)).boolValue, true)
        XCTAssertEqual(NSNumber(value: Double(42)).int8Value, Int8(42))
        XCTAssertEqual(NSNumber(value: Double(42)).uint8Value, UInt8(42))
        XCTAssertEqual(NSNumber(value: Double(42)).int16Value, Int16(42))
        XCTAssertEqual(NSNumber(value: Double(42)).uint16Value, UInt16(42))
        XCTAssertEqual(NSNumber(value: Double(42)).int32Value, Int32(42))
        XCTAssertEqual(NSNumber(value: Double(42)).uint32Value, UInt32(42))
        XCTAssertEqual(NSNumber(value: Double(42)).int64Value, Int64(42))
        XCTAssertEqual(NSNumber(value: Double(42)).uint64Value, UInt64(42))
        XCTAssertEqual(NSNumber(value: Double(0)).floatValue, Float(0))
        XCTAssertEqual(NSNumber(value: Double(-37.5)).floatValue, Float(-37.5))
        XCTAssertEqual(NSNumber(value: Double(42.1)).floatValue, Float(42.1))
        XCTAssertEqual(NSNumber(value: Double(0)).doubleValue, Double(0))
        XCTAssertEqual(NSNumber(value: Double(-37.5)).doubleValue, Double(-37.5))
        XCTAssertEqual(NSNumber(value: Double(42.1)).doubleValue, Double(42.1))

        let nanDouble = NSNumber(value: Double.nan)
        XCTAssertTrue(nanDouble.floatValue.isNaN)
    }

    func test_compareNumberWithBool() {
        XCTAssertEqual(NSNumber(value: true).compare(NSNumber(value: true)), .orderedSame)
        XCTAssertEqual(NSNumber(value: true).compare(NSNumber(value: false)), .orderedDescending)
        XCTAssertEqual(NSNumber(value: false).compare(NSNumber(value: true)), .orderedAscending)

        XCTAssertEqual(NSNumber(value: false).compare(NSNumber(value: Int8(0))), .orderedSame)
#if !(os(Linux) && (arch(arm) || arch(powerpc64) || arch(powerpc64le)))
        // Linux/arm and Linux/power chars are unsigned, so Int8 in Swift, until this issue is resolved, these tests will always fail.
        XCTAssertEqual(NSNumber(value: false).compare(NSNumber(value: Int8(-1))), .orderedDescending)
#endif
        XCTAssertEqual(NSNumber(value: false).compare(NSNumber(value: Int8(1))), .orderedAscending)

        XCTAssertEqual(NSNumber(value: true).compare(NSNumber(value: Int8(1))), .orderedSame)
        XCTAssertEqual(NSNumber(value: true).compare(NSNumber(value: Int8(0))), .orderedDescending)
        XCTAssertEqual(NSNumber(value: true).compare(NSNumber(value: Int8(2))), .orderedAscending)

        XCTAssertEqual(NSNumber(value: false).compare(NSNumber(value: Double(0))), .orderedSame)
        XCTAssertEqual(NSNumber(value: false).compare(NSNumber(value: Double(-0.1))), .orderedDescending)
        XCTAssertEqual(NSNumber(value: false).compare(NSNumber(value: Double(0.1))), .orderedAscending)

        XCTAssertEqual(NSNumber(value: true).compare(NSNumber(value: Double(1))), .orderedSame)
        XCTAssertEqual(NSNumber(value: true).compare(NSNumber(value: Double(0.9))), .orderedDescending)
        XCTAssertEqual(NSNumber(value: true).compare(NSNumber(value: Double(1.1))), .orderedAscending)
    }

    func test_compareNumberWithChar() {
        XCTAssertEqual(NSNumber(value: Int8(42)).compare(NSNumber(value: Int8(42))), .orderedSame)
        XCTAssertEqual(NSNumber(value: Int8(42)).compare(NSNumber(value: Int8(0))), .orderedDescending)
#if !(os(Linux) && (arch(arm) || arch(powerpc64) || arch(powerpc64le)))
        // Linux/arm and Linux/power chars are unsigned, so Int8 in Swift, until this issue is resolved, these tests will always fail.
        XCTAssertEqual(NSNumber(value: Int8(-37)).compare(NSNumber(value: Int8(16))), .orderedAscending)
#endif

        XCTAssertEqual(NSNumber(value: Int8(1)).compare(NSNumber(value: true)), .orderedSame)
        XCTAssertEqual(NSNumber(value: Int8(1)).compare(NSNumber(value: false)), .orderedDescending)
#if !(os(Linux) && (arch(arm) || arch(powerpc64) || arch(powerpc64le)))
        // Linux/arm and Linux/power chars are unsigned, so Int8 in Swift, until this issue is resolved, these tests will always fail.
        XCTAssertEqual(NSNumber(value: Int8(-37)).compare(NSNumber(value: true)), .orderedAscending)
#endif

        XCTAssertEqual(NSNumber(value: Int8(42)).compare(NSNumber(value: UInt8(42))), .orderedSame)
        XCTAssertEqual(NSNumber(value: Int8(42)).compare(NSNumber(value: UInt8(16))), .orderedDescending)
#if !(os(Linux) && (arch(arm) || arch(powerpc64) || arch(powerpc64le)))
        // Linux/arm and Linux/power chars are unsigned, so Int8 in Swift, until this issue is resolved, these tests will always fail.
        XCTAssertEqual(NSNumber(value: Int8(-37)).compare(NSNumber(value: UInt8(255))), .orderedAscending)
#endif

        XCTAssertEqual(NSNumber(value: Int8(42)).compare(NSNumber(value: Float(42))), .orderedSame)
#if !(os(Linux) && (arch(arm) || arch(powerpc64) || arch(powerpc64le)))
        // Linux/arm and Linux/power chars are unsigned, so Int8 in Swift, until this issue is resolved, these tests will always fail.
        XCTAssertEqual(NSNumber(value: Int8(-16)).compare(NSNumber(value: Float(-37.5))), .orderedDescending)
#endif
        XCTAssertEqual(NSNumber(value: Int8(16)).compare(NSNumber(value: Float(16.1))), .orderedAscending)
    }

    func test_compareNumberWithUnsignedChar() {
        XCTAssertEqual(NSNumber(value: UInt8(42)).compare(NSNumber(value: UInt8(42))), .orderedSame)
        XCTAssertEqual(NSNumber(value: UInt8(42)).compare(NSNumber(value: UInt8(0))), .orderedDescending)
//        XCTAssertEqual(NSNumber(value: UInt8(42)).compare(NSNumber(value: UInt8(255))), .orderedAscending)

        XCTAssertEqual(NSNumber(value: UInt8(1)).compare(NSNumber(value: true)), .orderedSame)
        XCTAssertEqual(NSNumber(value: UInt8(1)).compare(NSNumber(value: false)), .orderedDescending)
        XCTAssertEqual(NSNumber(value: UInt8(0)).compare(NSNumber(value: true)), .orderedAscending)

        XCTAssertEqual(NSNumber(value: UInt8(42)).compare(NSNumber(value: Int16(42))), .orderedSame)
        XCTAssertEqual(NSNumber(value: UInt8(0)).compare(NSNumber(value: Int16(-123))), .orderedDescending)
        XCTAssertEqual(NSNumber(value: UInt8(255)).compare(NSNumber(value: Int16(12345))), .orderedAscending)

        XCTAssertEqual(NSNumber(value: UInt8(42)).compare(NSNumber(value: Float(42))), .orderedSame)
        XCTAssertEqual(NSNumber(value: UInt8(0)).compare(NSNumber(value: Float(-37.5))), .orderedDescending)
        XCTAssertEqual(NSNumber(value: UInt8(255)).compare(NSNumber(value: Float(1234.5))), .orderedAscending)
    }

    func test_compareNumberWithShort() {
        XCTAssertEqual(NSNumber(value: Int16(42)).compare(NSNumber(value: Int16(42))), .orderedSame)
        XCTAssertEqual(NSNumber(value: Int16(42)).compare(NSNumber(value: Int16(0))), .orderedDescending)
        XCTAssertEqual(NSNumber(value: Int16(-37)).compare(NSNumber(value: Int16(12345))), .orderedAscending)

        XCTAssertEqual(NSNumber(value: Int16(1)).compare(NSNumber(value: true)), .orderedSame)
        XCTAssertEqual(NSNumber(value: Int16(1)).compare(NSNumber(value: false)), .orderedDescending)
        XCTAssertEqual(NSNumber(value: Int16(0)).compare(NSNumber(value: true)), .orderedAscending)

        XCTAssertEqual(NSNumber(value: Int16(42)).compare(NSNumber(value: UInt8(42))), .orderedSame)
        XCTAssertEqual(NSNumber(value: Int16(42)).compare(NSNumber(value: UInt8(0))), .orderedDescending)
        XCTAssertEqual(NSNumber(value: Int16(-37)).compare(NSNumber(value: UInt8(255))), .orderedAscending)

        XCTAssertEqual(NSNumber(value: Int16(42)).compare(NSNumber(value: Float(42))), .orderedSame)
        XCTAssertEqual(NSNumber(value: Int16(0)).compare(NSNumber(value: Float(-37.5))), .orderedDescending)
        XCTAssertEqual(NSNumber(value: Int16(255)).compare(NSNumber(value: Float(1234.5))), .orderedAscending)
    }

    func test_compareNumberWithFloat() {
        XCTAssertEqual(NSNumber(value: Float(42)).compare(NSNumber(value: Float(42))), .orderedSame)
        XCTAssertEqual(NSNumber(value: Float(42)).compare(NSNumber(value: Float(0))), .orderedDescending)
        XCTAssertEqual(NSNumber(value: Float(-37)).compare(NSNumber(value: Float(12345))), .orderedAscending)

        XCTAssertEqual(NSNumber(value: Float(1)).compare(NSNumber(value: true)), .orderedSame)
        XCTAssertEqual(NSNumber(value: Float(0.1)).compare(NSNumber(value: false)), .orderedDescending)
        XCTAssertEqual(NSNumber(value: Float(0.9)).compare(NSNumber(value: true)), .orderedAscending)

        XCTAssertEqual(NSNumber(value: Float(42)).compare(NSNumber(value: UInt8(42))), .orderedSame)
        XCTAssertEqual(NSNumber(value: Float(0.1)).compare(NSNumber(value: UInt8(0))), .orderedDescending)
        XCTAssertEqual(NSNumber(value: Float(-254.9)).compare(NSNumber(value: UInt8(255))), .orderedAscending)

        XCTAssertEqual(NSNumber(value: Float(42)).compare(NSNumber(value: Double(42))), .orderedSame)
        XCTAssertEqual(NSNumber(value: Float(0)).compare(NSNumber(value: Double(-37.5))), .orderedDescending)
        XCTAssertEqual(NSNumber(value: Float(-37.5)).compare(NSNumber(value: Double(1234.5))), .orderedAscending)
    }

    func test_compareNumberWithDouble() {
        XCTAssertEqual(NSNumber(value: Double(42)).compare(NSNumber(value: Double(42))), .orderedSame)
        XCTAssertEqual(NSNumber(value: Double(42)).compare(NSNumber(value: Double(0))), .orderedDescending)
        XCTAssertEqual(NSNumber(value: Double(-37)).compare(NSNumber(value: Double(12345))), .orderedAscending)

        XCTAssertEqual(NSNumber(value: Double(1)).compare(NSNumber(value: true)), .orderedSame)
        XCTAssertEqual(NSNumber(value: Double(0.1)).compare(NSNumber(value: false)), .orderedDescending)
        XCTAssertEqual(NSNumber(value: Double(0.9)).compare(NSNumber(value: true)), .orderedAscending)

        XCTAssertEqual(NSNumber(value: Double(42)).compare(NSNumber(value: UInt8(42))), .orderedSame)
        XCTAssertEqual(NSNumber(value: Double(0.1)).compare(NSNumber(value: UInt8(0))), .orderedDescending)
        XCTAssertEqual(NSNumber(value: Double(-254.9)).compare(NSNumber(value: UInt8(255))), .orderedAscending)

        XCTAssertEqual(NSNumber(value: Double(42)).compare(NSNumber(value: Float(42))), .orderedSame)
        XCTAssertEqual(NSNumber(value: Double(0)).compare(NSNumber(value: Float(-37.5))), .orderedDescending)
        XCTAssertEqual(NSNumber(value: Double(-37.5)).compare(NSNumber(value: Float(1234.5))), .orderedAscending)
    }

    
    func test_description() {
        XCTAssertEqual(NSNumber(value: 1000).description, "1000")
        XCTAssertEqual(NSNumber(value: 0.001).description, "0.001")

        XCTAssertEqual(NSNumber(value: Int8.min).description, "-128")
        XCTAssertEqual(NSNumber(value: Int8.max).description, "127")
        XCTAssertEqual(NSNumber(value: Int16.min).description, "-32768")
        XCTAssertEqual(NSNumber(value: Int16.max).description, "32767")
        XCTAssertEqual(NSNumber(value: Int32.min).description, "-2147483648")
        XCTAssertEqual(NSNumber(value: Int32.max).description, "2147483647")
        XCTAssertEqual(NSNumber(value: Int64.min).description, "-9223372036854775808")
        XCTAssertEqual(NSNumber(value: Int64.max).description, "9223372036854775807")

        XCTAssertEqual(NSNumber(value: UInt8.min).description, "0")
        XCTAssertEqual(NSNumber(value: UInt8.max).description, "255")
        XCTAssertEqual(NSNumber(value: UInt16.min).description, "0")
        XCTAssertEqual(NSNumber(value: UInt16.max).description, "65535")
        XCTAssertEqual(NSNumber(value: UInt32.min).description, "0")
        XCTAssertEqual(NSNumber(value: UInt32.max).description, "4294967295")
        XCTAssertEqual(NSNumber(value: UInt64.min).description, "0")
        XCTAssertEqual(NSNumber(value: UInt64.max).description, "18446744073709551615")

        XCTAssertEqual(NSNumber(value: 1.2 as Float).description, "1.2")
        XCTAssertEqual(NSNumber(value: 1000_000_000 as Float).description, "1e+09")
        XCTAssertEqual(NSNumber(value: -0.99 as Float).description, "-0.99")
        XCTAssertEqual(NSNumber(value: Float.zero).description, "0.0")
        XCTAssertEqual(NSNumber(value: Float.nan).description, "nan")
        XCTAssertEqual(NSNumber(value: Float.leastNormalMagnitude).description, "1.1754944e-38")
        XCTAssertEqual(NSNumber(value: Float.leastNonzeroMagnitude).description, "1e-45")
        XCTAssertEqual(NSNumber(value: Float.greatestFiniteMagnitude).description, "3.4028235e+38")
        XCTAssertEqual(NSNumber(value: Float.pi).description, "3.1415925")

        XCTAssertEqual(NSNumber(value: 1.2 as Double).description, "1.2")
        XCTAssertEqual(NSNumber(value: 1000_000_000 as Double).description, "1000000000.0")
        XCTAssertEqual(NSNumber(value: -0.99 as Double).description, "-0.99")
        XCTAssertEqual(NSNumber(value: Double.zero).description, "0.0")
        XCTAssertEqual(NSNumber(value: Double.nan).description, "nan")
        XCTAssertEqual(NSNumber(value: Double.leastNormalMagnitude).description, "2.2250738585072014e-308")
        XCTAssertEqual(NSNumber(value: Double.leastNonzeroMagnitude).description, "5e-324")
        XCTAssertEqual(NSNumber(value: Double.greatestFiniteMagnitude).description, "1.7976931348623157e+308")
        XCTAssertEqual(NSNumber(value: Double.pi).description, "3.141592653589793")
    }

    func test_descriptionWithLocale() {
        // nil Locale
        XCTAssertEqual(NSNumber(value: 1000).description(withLocale: nil), "1000")
        XCTAssertEqual(NSNumber(value: 0.001).description(withLocale: nil), "0.001")

        XCTAssertEqual(NSNumber(value: Int8.min).description(withLocale: nil), "-128")
        XCTAssertEqual(NSNumber(value: Int8.max).description(withLocale: nil), "127")
        XCTAssertEqual(NSNumber(value: Int16.min).description(withLocale: nil), "-32768")
        XCTAssertEqual(NSNumber(value: Int16.max).description(withLocale: nil), "32767")
        XCTAssertEqual(NSNumber(value: Int32.min).description(withLocale: nil), "-2147483648")
        XCTAssertEqual(NSNumber(value: Int32.max).description(withLocale: nil), "2147483647")
        XCTAssertEqual(NSNumber(value: Int64.min).description(withLocale: nil), "-9223372036854775808")
        XCTAssertEqual(NSNumber(value: Int64.max).description(withLocale: nil), "9223372036854775807")

        XCTAssertEqual(NSNumber(value: UInt8.min).description(withLocale: nil), "0")
        XCTAssertEqual(NSNumber(value: UInt8.max).description(withLocale: nil), "255")
        XCTAssertEqual(NSNumber(value: UInt16.min).description(withLocale: nil), "0")
        XCTAssertEqual(NSNumber(value: UInt16.max).description(withLocale: nil), "65535")
        XCTAssertEqual(NSNumber(value: UInt32.min).description(withLocale: nil), "0")
        XCTAssertEqual(NSNumber(value: UInt32.max).description(withLocale: nil), "4294967295")
        XCTAssertEqual(NSNumber(value: UInt64.min).description(withLocale: nil), "0")
        XCTAssertEqual(NSNumber(value: UInt64.max).description(withLocale: nil), "18446744073709551615")

        XCTAssertEqual(NSNumber(value: 1.2 as Float).description(withLocale: nil), "1.2")
        XCTAssertEqual(NSNumber(value: 1000_000_000 as Float).description(withLocale: nil), "1e+09")
        XCTAssertEqual(NSNumber(value: -0.99 as Float).description(withLocale: nil), "-0.99")
        XCTAssertEqual(NSNumber(value: Float.zero).description(withLocale: nil), "0.0")
        XCTAssertEqual(NSNumber(value: Float.nan).description(withLocale: nil), "nan")
        XCTAssertEqual(NSNumber(value: Float.leastNormalMagnitude).description(withLocale: nil), "1.1754944e-38")
        XCTAssertEqual(NSNumber(value: Float.leastNonzeroMagnitude).description(withLocale: nil), "1e-45")
        XCTAssertEqual(NSNumber(value: Float.greatestFiniteMagnitude).description(withLocale: nil), "3.4028235e+38")
        XCTAssertEqual(NSNumber(value: Float.pi).description(withLocale: nil), "3.1415925")

        XCTAssertEqual(NSNumber(value: 1.2 as Double).description(withLocale: nil), "1.2")
        XCTAssertEqual(NSNumber(value: 1000_000_000 as Double).description(withLocale: nil), "1000000000.0")
        XCTAssertEqual(NSNumber(value: -0.99 as Double).description(withLocale: nil), "-0.99")
        XCTAssertEqual(NSNumber(value: Double.zero).description(withLocale: nil), "0.0")
        XCTAssertEqual(NSNumber(value: Double.nan).description(withLocale: nil), "nan")
        XCTAssertEqual(NSNumber(value: Double.leastNormalMagnitude).description(withLocale: nil), "2.2250738585072014e-308")
        XCTAssertEqual(NSNumber(value: Double.leastNonzeroMagnitude).description(withLocale: nil), "5e-324")
        XCTAssertEqual(NSNumber(value: Double.greatestFiniteMagnitude).description(withLocale: nil), "1.7976931348623157e+308")
        XCTAssertEqual(NSNumber(value: Double.pi).description(withLocale: nil), "3.141592653589793")

        // en_GB Locale
        XCTAssertEqual(NSNumber(value: 1000).description(withLocale: Locale(identifier: "en_GB")), "1,000")
        XCTAssertEqual(NSNumber(value: 0.001).description(withLocale: Locale(identifier: "en_GB")), "0.001")

        XCTAssertEqual(NSNumber(value: Int8.min).description(withLocale: Locale(identifier: "en_GB")), "-128")
        XCTAssertEqual(NSNumber(value: Int8.max).description(withLocale: Locale(identifier: "en_GB")), "127")
        XCTAssertEqual(NSNumber(value: Int16.min).description(withLocale: Locale(identifier: "en_GB")), "-32,768")
        XCTAssertEqual(NSNumber(value: Int16.max).description(withLocale: Locale(identifier: "en_GB")), "32,767")
        XCTAssertEqual(NSNumber(value: Int32.min).description(withLocale: Locale(identifier: "en_GB")), "-2,147,483,648")
        XCTAssertEqual(NSNumber(value: Int32.max).description(withLocale: Locale(identifier: "en_GB")), "2,147,483,647")
        XCTAssertEqual(NSNumber(value: Int64.min).description(withLocale: Locale(identifier: "en_GB")), "-9,223,372,036,854,775,808")
        XCTAssertEqual(NSNumber(value: Int64.max).description(withLocale: Locale(identifier: "en_GB")), "9,223,372,036,854,775,807")

        XCTAssertEqual(NSNumber(value: UInt8.min).description(withLocale: Locale(identifier: "en_GB")), "0")
        XCTAssertEqual(NSNumber(value: UInt8.max).description(withLocale: Locale(identifier: "en_GB")), "255")
        XCTAssertEqual(NSNumber(value: UInt16.min).description(withLocale: Locale(identifier: "en_GB")), "0")
        XCTAssertEqual(NSNumber(value: UInt16.max).description(withLocale: Locale(identifier: "en_GB")), "65,535")
        XCTAssertEqual(NSNumber(value: UInt32.min).description(withLocale: Locale(identifier: "en_GB")), "0")
        XCTAssertEqual(NSNumber(value: UInt32.max).description(withLocale: Locale(identifier: "en_GB")), "4,294,967,295")
        XCTAssertEqual(NSNumber(value: UInt64.min).description(withLocale: Locale(identifier: "en_GB")), "0")

        // This is the correct value but currently buggy and the locale is not used
        // XCTAssertEqual(NSNumber(value: UInt64.max).description(withLocale: Locale(identifier: "en_GB")), "18,446,744,073,709,551,615")
        XCTAssertEqual(NSNumber(value: UInt64.max).description(withLocale: Locale(identifier: "en_GB")), "18446744073709551615")

        XCTAssertEqual(NSNumber(value: 1.2 as Float).description(withLocale: Locale(identifier: "en_GB")), "1.2")
        XCTAssertEqual(NSNumber(value: 1000_000_000 as Float).description(withLocale: Locale(identifier: "en_GB")), "1E+09")
        XCTAssertEqual(NSNumber(value: -0.99 as Float).description(withLocale: Locale(identifier: "en_GB")), "-0.99")
        XCTAssertEqual(NSNumber(value: Float.zero).description(withLocale: Locale(identifier: "en_GB")), "0")
        XCTAssertEqual(NSNumber(value: Float.nan).description(withLocale: Locale(identifier: "en_GB")), "NaN")
        XCTAssertEqual(NSNumber(value: Float.leastNormalMagnitude).description(withLocale: Locale(identifier: "en_GB")), "1.175494E-38")
        XCTAssertEqual(NSNumber(value: Float.leastNonzeroMagnitude).description(withLocale: Locale(identifier: "en_GB")), "1.401298E-45")
        XCTAssertEqual(NSNumber(value: Float.greatestFiniteMagnitude).description(withLocale: Locale(identifier: "en_GB")), "3.402823E+38")
        XCTAssertEqual(NSNumber(value: Float.pi).description(withLocale: Locale(identifier: "en_GB")), "3.141593")

        XCTAssertEqual(NSNumber(value: 1.2 as Double).description(withLocale: Locale(identifier: "en_GB")), "1.2")
        XCTAssertEqual(NSNumber(value: 1000_000_000 as Double).description(withLocale: Locale(identifier: "en_GB")), "1,000,000,000")
        XCTAssertEqual(NSNumber(value: -0.99 as Double).description(withLocale: Locale(identifier: "en_GB")), "-0.99")
        XCTAssertEqual(NSNumber(value: Double.zero).description(withLocale: Locale(identifier: "en_GB")), "0")
        XCTAssertEqual(NSNumber(value: Double.nan).description(withLocale: Locale(identifier: "en_GB")), "NaN")
        XCTAssertEqual(NSNumber(value: Double.leastNormalMagnitude).description(withLocale: Locale(identifier: "en_GB")), "2.225073858507201E-308")
        XCTAssertEqual(NSNumber(value: Double.leastNonzeroMagnitude).description(withLocale: Locale(identifier: "en_GB")), "5E-324")
        XCTAssertEqual(NSNumber(value: Double.greatestFiniteMagnitude).description(withLocale: Locale(identifier: "en_GB")), "1.797693134862316E+308")

        // de_DE Locale
        XCTAssertEqual(NSNumber(value: 1000).description(withLocale: Locale(identifier: "de_DE")), "1.000")
        XCTAssertEqual(NSNumber(value: 0.001).description(withLocale: Locale(identifier: "de_DE")), "0,001")

        XCTAssertEqual(NSNumber(value: Int8.min).description(withLocale: Locale(identifier: "de_DE")), "-128")
        XCTAssertEqual(NSNumber(value: Int8.max).description(withLocale: Locale(identifier: "de_DE")), "127")
        XCTAssertEqual(NSNumber(value: Int16.min).description(withLocale: Locale(identifier: "de_DE")), "-32.768")
        XCTAssertEqual(NSNumber(value: Int16.max).description(withLocale: Locale(identifier: "de_DE")), "32.767")
        XCTAssertEqual(NSNumber(value: Int32.min).description(withLocale: Locale(identifier: "de_DE")), "-2.147.483.648")
        XCTAssertEqual(NSNumber(value: Int32.max).description(withLocale: Locale(identifier: "de_DE")), "2.147.483.647")
        XCTAssertEqual(NSNumber(value: Int64.min).description(withLocale: Locale(identifier: "de_DE")), "-9.223.372.036.854.775.808")
        XCTAssertEqual(NSNumber(value: Int64.max).description(withLocale: Locale(identifier: "de_DE")), "9.223.372.036.854.775.807")

        XCTAssertEqual(NSNumber(value: UInt8.min).description(withLocale: Locale(identifier: "de_DE")), "0")
        XCTAssertEqual(NSNumber(value: UInt8.max).description(withLocale: Locale(identifier: "de_DE")), "255")
        XCTAssertEqual(NSNumber(value: UInt16.min).description(withLocale: Locale(identifier: "de_DE")), "0")
        XCTAssertEqual(NSNumber(value: UInt16.max).description(withLocale: Locale(identifier: "de_DE")), "65.535")
        XCTAssertEqual(NSNumber(value: UInt32.min).description(withLocale: Locale(identifier: "de_DE")), "0")
        XCTAssertEqual(NSNumber(value: UInt32.max).description(withLocale: Locale(identifier: "de_DE")), "4.294.967.295")
        XCTAssertEqual(NSNumber(value: UInt64.min).description(withLocale: Locale(identifier: "de_DE")), "0")

        // This is the correct value but currently buggy and the locale is not used
        //XCTAssertEqual(NSNumber(value: UInt64.max).description(withLocale: Locale(identifier: "de_DE")), "18.446.744.073.709.551.615")
        XCTAssertEqual(NSNumber(value: UInt64.max).description(withLocale: Locale(identifier: "de_DE")), "18446744073709551615")

        XCTAssertEqual(NSNumber(value: 1.2 as Float).description(withLocale: Locale(identifier: "de_DE")), "1,2")
        XCTAssertEqual(NSNumber(value: 1000_000_000 as Float).description(withLocale: Locale(identifier: "de_DE")), "1E+09")
        XCTAssertEqual(NSNumber(value: -0.99 as Float).description(withLocale: Locale(identifier: "de_DE")), "-0,99")
        XCTAssertEqual(NSNumber(value: Float.pi).description(withLocale: Locale(identifier: "de_DE")), "3,141593")
        XCTAssertEqual(NSNumber(value: Float.zero).description(withLocale: Locale(identifier: "de_DE")), "0")
        XCTAssertEqual(NSNumber(value: Float.nan).description(withLocale: Locale(identifier: "de_DE")), "NaN")
        XCTAssertEqual(NSNumber(value: Float.leastNormalMagnitude).description(withLocale: Locale(identifier: "de_DE")), "1,175494E-38")
        XCTAssertEqual(NSNumber(value: Float.leastNonzeroMagnitude).description(withLocale: Locale(identifier: "de_DE")), "1,401298E-45")
        XCTAssertEqual(NSNumber(value: Float.greatestFiniteMagnitude).description(withLocale: Locale(identifier: "de_DE")), "3,402823E+38")

        XCTAssertEqual(NSNumber(value: 1.2 as Double).description(withLocale: Locale(identifier: "de_DE")), "1,2")
        XCTAssertEqual(NSNumber(value: 1000_000_000 as Double).description(withLocale: Locale(identifier: "de_DE")), "1.000.000.000")
        XCTAssertEqual(NSNumber(value: -0.99 as Double).description(withLocale: Locale(identifier: "de_DE")), "-0,99")
        XCTAssertEqual(NSNumber(value: Double.zero).description(withLocale: Locale(identifier: "de_DE")), "0")
        XCTAssertEqual(NSNumber(value: Double.nan).description(withLocale: Locale(identifier: "de_DE")), "NaN")
        XCTAssertEqual(NSNumber(value: Double.leastNormalMagnitude).description(withLocale: Locale(identifier: "de_DE")), "2,225073858507201E-308")
        XCTAssertEqual(NSNumber(value: Double.leastNonzeroMagnitude).description(withLocale: Locale(identifier: "de_DE")), "5E-324")
        XCTAssertEqual(NSNumber(value: Double.greatestFiniteMagnitude).description(withLocale: Locale(identifier: "de_DE")), "1,797693134862316E+308")
    }

    func test_objCType() {
        let objCType: (NSNumber) -> UnicodeScalar = { number in
            return UnicodeScalar(UInt8(number.objCType.pointee))
        }

        XCTAssertEqual("c" /* 0x63 */, objCType(NSNumber(value: true)))

        XCTAssertEqual("c" /* 0x63 */, objCType(NSNumber(value: Int8.max)))
        XCTAssertEqual("s" /* 0x73 */, objCType(NSNumber(value: UInt8(Int8.max))))
        XCTAssertEqual("s" /* 0x73 */, objCType(NSNumber(value: UInt8(Int8.max) + 1)))

        XCTAssertEqual("s" /* 0x73 */, objCType(NSNumber(value: Int16.max)))
        XCTAssertEqual("i" /* 0x69 */, objCType(NSNumber(value: UInt16(Int16.max))))
        XCTAssertEqual("i" /* 0x69 */, objCType(NSNumber(value: UInt16(Int16.max) + 1)))

        XCTAssertEqual("i" /* 0x69 */, objCType(NSNumber(value: Int32.max)))
        XCTAssertEqual("q" /* 0x71 */, objCType(NSNumber(value: UInt32(Int32.max))))
        XCTAssertEqual("q" /* 0x71 */, objCType(NSNumber(value: UInt32(Int32.max) + 1)))

        XCTAssertEqual("q" /* 0x71 */, objCType(NSNumber(value: Int64.max)))
        // When value is lower equal to `Int64.max`, it returns 'q' even if using `UInt64`
        XCTAssertEqual("q" /* 0x71 */, objCType(NSNumber(value: UInt64(Int64.max))))
        XCTAssertEqual("Q" /* 0x51 */, objCType(NSNumber(value: UInt64(Int64.max) + 1)))

        // Depends on architectures
        #if arch(x86_64) || arch(arm64) || arch(s390x) || arch(powerpc64) || arch(powerpc64le)
            XCTAssertEqual("q" /* 0x71 */, objCType(NSNumber(value: Int.max)))
            // When value is lower equal to `Int.max`, it returns 'q' even if using `UInt`
            XCTAssertEqual("q" /* 0x71 */, objCType(NSNumber(value: UInt(Int.max))))
            XCTAssertEqual("Q" /* 0x51 */, objCType(NSNumber(value: UInt(Int.max) + 1)))
        #elseif arch(i386) || arch(arm)
            XCTAssertEqual("i" /* 0x71 */, objCType(NSNumber(value: Int.max)))
            XCTAssertEqual("q" /* 0x71 */, objCType(NSNumber(value: UInt(Int.max))))
            XCTAssertEqual("q" /* 0x51 */, objCType(NSNumber(value: UInt(Int.max) + 1)))
        #else
            #error("This architecture isn't known. Add it to the 32-bit or 64-bit line.")
        #endif

        XCTAssertEqual("f" /* 0x66 */, objCType(NSNumber(value: Float.greatestFiniteMagnitude)))
        XCTAssertEqual("d" /* 0x64 */, objCType(NSNumber(value: Double.greatestFiniteMagnitude)))
    }

    func test_stringValue() {
        if UInt.max == UInt32.max {
            XCTAssertEqual(NSNumber(value: UInt.min).stringValue, "0")
            XCTAssertEqual(NSNumber(value: UInt.min + 1).stringValue, "1")
            XCTAssertEqual(NSNumber(value: UInt.max).stringValue, "4294967295")
            XCTAssertEqual(NSNumber(value: UInt.max - 1).stringValue, "4294967294")
        } else if UInt.max == UInt64.max {
            XCTAssertEqual(NSNumber(value: UInt.min).stringValue, "0")
            XCTAssertEqual(NSNumber(value: UInt.min + 1).stringValue, "1")
            XCTAssertEqual(NSNumber(value: UInt.max).stringValue, "18446744073709551615")
            XCTAssertEqual(NSNumber(value: UInt.max - 1).stringValue, "18446744073709551614")
        }

        XCTAssertEqual(NSNumber(value: UInt8.min).stringValue, "0")
        XCTAssertEqual(NSNumber(value: UInt8.min + 1).stringValue, "1")
        XCTAssertEqual(NSNumber(value: UInt8.max).stringValue, "255")
        XCTAssertEqual(NSNumber(value: UInt8.max - 1).stringValue, "254")

        XCTAssertEqual(NSNumber(value: UInt16.min).stringValue, "0")
        XCTAssertEqual(NSNumber(value: UInt16.min + 1).stringValue, "1")
        XCTAssertEqual(NSNumber(value: UInt16.max).stringValue, "65535")
        XCTAssertEqual(NSNumber(value: UInt16.max - 1).stringValue, "65534")

        XCTAssertEqual(NSNumber(value: UInt32.min).stringValue, "0")
        XCTAssertEqual(NSNumber(value: UInt32.min + 1).stringValue, "1")
        XCTAssertEqual(NSNumber(value: UInt32.max).stringValue, "4294967295")
        XCTAssertEqual(NSNumber(value: UInt32.max - 1).stringValue, "4294967294")

        XCTAssertEqual(NSNumber(value: UInt64.min).stringValue, "0")
        XCTAssertEqual(NSNumber(value: UInt64.min + 1).stringValue, "1")
        XCTAssertEqual(NSNumber(value: UInt64.max).stringValue, "18446744073709551615")
        XCTAssertEqual(NSNumber(value: UInt64.max - 1).stringValue, "18446744073709551614")

        if Int.max == Int32.max {
            XCTAssertEqual(NSNumber(value: Int.min).stringValue, "-2147483648")
            XCTAssertEqual(NSNumber(value: Int.min + 1).stringValue, "-2147483647")
            XCTAssertEqual(NSNumber(value: Int.max).stringValue, "2147483647")
            XCTAssertEqual(NSNumber(value: Int.max - 1).stringValue, "2147483646")
        } else if Int.max == Int64.max {
            XCTAssertEqual(NSNumber(value: Int.min).stringValue, "-9223372036854775808")
            XCTAssertEqual(NSNumber(value: Int.min + 1).stringValue, "-9223372036854775807")
            XCTAssertEqual(NSNumber(value: Int.max).stringValue, "9223372036854775807")
            XCTAssertEqual(NSNumber(value: Int.max - 1).stringValue, "9223372036854775806")
        }

        XCTAssertEqual(NSNumber(value: Int8.min).stringValue, "-128")
        XCTAssertEqual(NSNumber(value: Int8.min + 1).stringValue, "-127")
        XCTAssertEqual(NSNumber(value: Int8.max).stringValue, "127")
        XCTAssertEqual(NSNumber(value: Int8.max - 1).stringValue, "126")

        XCTAssertEqual(NSNumber(value: Int16.min).stringValue, "-32768")
        XCTAssertEqual(NSNumber(value: Int16.min + 1).stringValue, "-32767")
        XCTAssertEqual(NSNumber(value: Int16.max).stringValue, "32767")
        XCTAssertEqual(NSNumber(value: Int16.max - 1).stringValue, "32766")

        XCTAssertEqual(NSNumber(value: Int32.min).stringValue, "-2147483648")
        XCTAssertEqual(NSNumber(value: Int32.min + 1).stringValue, "-2147483647")
        XCTAssertEqual(NSNumber(value: Int32.max).stringValue, "2147483647")
        XCTAssertEqual(NSNumber(value: Int32.max - 1).stringValue, "2147483646")

        XCTAssertEqual(NSNumber(value: Int64.min).stringValue, "-9223372036854775808")
        XCTAssertEqual(NSNumber(value: Int64.min + 1).stringValue, "-9223372036854775807")
        XCTAssertEqual(NSNumber(value: Int64.max).stringValue, "9223372036854775807")
        XCTAssertEqual(NSNumber(value: Int64.max - 1).stringValue, "9223372036854775806")
    }

    func test_Equals() {
        // Booleans: false only equals 0, true only equals 1
        XCTAssertTrue(NSNumber(value: true) == NSNumber(value: Bool(true)))
        XCTAssertTrue(NSNumber(value: true) == NSNumber(value: Int(1)))
        XCTAssertTrue(NSNumber(value: true) == NSNumber(value: Float(1)))
        XCTAssertTrue(NSNumber(value: true) == NSNumber(value: Double(1)))
        XCTAssertTrue(NSNumber(value: true) == NSNumber(value: Int8(1)))
        XCTAssertTrue(NSNumber(value: true) != NSNumber(value: false))
        XCTAssertTrue(NSNumber(value: true) != NSNumber(value: Int8(-1)))
        let f: Float = 1.01
        let floatNum = NSNumber(value: f)
        XCTAssertTrue(NSNumber(value: true) != floatNum)
        let d: Double = 1234.56
        let doubleNum = NSNumber(value: d)
        XCTAssertTrue(NSNumber(value: true) != doubleNum)
        XCTAssertTrue(NSNumber(value: true) != NSNumber(value: 2))
        XCTAssertTrue(NSNumber(value: true) != NSNumber(value: Int.max))
        XCTAssertTrue(NSNumber(value: false) == NSNumber(value: Bool(false)))
        XCTAssertTrue(NSNumber(value: false) == NSNumber(value: Int(0)))
        XCTAssertTrue(NSNumber(value: false) == NSNumber(value: Float(0)))
        XCTAssertTrue(NSNumber(value: false) == NSNumber(value: Double(0)))
        XCTAssertTrue(NSNumber(value: false) == NSNumber(value: Int8(0)))
        XCTAssertTrue(NSNumber(value: false) == NSNumber(value: UInt64(0)))
        XCTAssertTrue(NSNumber(value: false) != NSNumber(value: 1))
        XCTAssertTrue(NSNumber(value: false) != NSNumber(value: 2))
        XCTAssertTrue(NSNumber(value: false) != NSNumber(value: Int.max))

        XCTAssertTrue(NSNumber(value: Int8(-1)) == NSNumber(value: Int16(-1)))
        XCTAssertTrue(NSNumber(value: Int16(-1)) == NSNumber(value: Int32(-1)))
        XCTAssertTrue(NSNumber(value: Int32(-1)) == NSNumber(value: Int64(-1)))
        XCTAssertTrue(NSNumber(value: Int8.max) != NSNumber(value: Int16.max))
        XCTAssertTrue(NSNumber(value: Int16.max) != NSNumber(value: Int32.max))
        XCTAssertTrue(NSNumber(value: Int32.max) != NSNumber(value: Int64.max))
        XCTAssertTrue(NSNumber(value: UInt8.min) == NSNumber(value: UInt16.min))
        XCTAssertTrue(NSNumber(value: UInt16.min) == NSNumber(value: UInt32.min))
        XCTAssertTrue(NSNumber(value: UInt32.min) == NSNumber(value: UInt64.min))
        XCTAssertTrue(NSNumber(value: UInt8.max) != NSNumber(value: UInt16.max))
        XCTAssertTrue(NSNumber(value: UInt16.max) != NSNumber(value: UInt32.max))
        XCTAssertTrue(NSNumber(value: UInt32.max) != NSNumber(value: UInt64.max))
        XCTAssertTrue(NSNumber(value: Int8(0)) == NSNumber(value: UInt16(0)))
        XCTAssertTrue(NSNumber(value: UInt16(0)) == NSNumber(value: Int32(0)))
        XCTAssertTrue(NSNumber(value: Int32(0)) == NSNumber(value: UInt64(0)))
        XCTAssertTrue(NSNumber(value: Int(0)) == NSNumber(value: UInt(0)))
        XCTAssertTrue(NSNumber(value: Int8.min) == NSNumber(value: Float(-128)))
        XCTAssertTrue(NSNumber(value: Int8.max) == NSNumber(value: Double(127)))
        XCTAssertTrue(NSNumber(value: UInt16.min) == NSNumber(value: Float(0)))
        XCTAssertTrue(NSNumber(value: UInt16.max) == NSNumber(value: Double(65535)))
        XCTAssertTrue(NSNumber(value: 1.1) != NSNumber(value: Int64(1)))
        let num = NSNumber(value: Int8.min)
        XCTAssertFalse(num == NSNumber(value: num.uint64Value))

        let zero = NSNumber(value: 0)
        let one = NSNumber(value: 1)
        let minusOne = NSNumber(value: -1)
        let intMin = NSNumber(value: Int.min)
        let intMax = NSNumber(value: Int.max)

        let nanFloat = NSNumber(value: Float.nan)
        XCTAssertEqual(nanFloat.compare(nanFloat), .orderedSame)

        XCTAssertFalse(nanFloat == zero)
        XCTAssertFalse(zero == nanFloat)
        XCTAssertEqual(nanFloat.compare(zero), .orderedAscending)
        XCTAssertEqual(zero.compare(nanFloat), .orderedDescending)

        XCTAssertEqual(nanFloat.compare(one), .orderedAscending)
        XCTAssertEqual(one.compare(nanFloat), .orderedDescending)

        XCTAssertEqual(nanFloat.compare(intMax), .orderedAscending)
        XCTAssertEqual(intMax.compare(nanFloat), .orderedDescending)

        XCTAssertEqual(nanFloat.compare(minusOne), .orderedDescending)
        XCTAssertEqual(minusOne.compare(nanFloat), .orderedAscending)

        XCTAssertEqual(nanFloat.compare(intMin), .orderedDescending)
        XCTAssertEqual(intMin.compare(nanFloat), .orderedAscending)


        let nanDouble = NSNumber(value: Double.nan)
        XCTAssertEqual(nanDouble.compare(nanDouble), .orderedSame)

        XCTAssertFalse(nanDouble == zero)
        XCTAssertFalse(zero == nanDouble)
        XCTAssertEqual(nanDouble.compare(zero), .orderedAscending)
        XCTAssertEqual(zero.compare(nanDouble), .orderedDescending)

        XCTAssertEqual(nanDouble.compare(one), .orderedAscending)
        XCTAssertEqual(one.compare(nanDouble), .orderedDescending)

        XCTAssertEqual(nanDouble.compare(intMax), .orderedAscending)
        XCTAssertEqual(intMax.compare(nanDouble), .orderedDescending)

        XCTAssertEqual(nanDouble.compare(minusOne), .orderedDescending)
        XCTAssertEqual(minusOne.compare(nanDouble), .orderedAscending)

        XCTAssertEqual(nanDouble.compare(intMin), .orderedDescending)
        XCTAssertEqual(intMin.compare(nanDouble), .orderedAscending)

        XCTAssertEqual(nanDouble, nanFloat)
        XCTAssertEqual(nanFloat, nanDouble)

        XCTAssertEqual(NSNumber(value: Double.leastNonzeroMagnitude).compare(NSNumber(value: 0)), .orderedDescending)
        XCTAssertEqual(NSNumber(value: Double.greatestFiniteMagnitude).compare(NSNumber(value: 0)), .orderedDescending)
        XCTAssertTrue(NSNumber(value: Double(-0.0)) == NSNumber(value: Double(0.0)))
    }

    func test_boolValue() {
        XCTAssertEqual(NSNumber(value: UInt8.max).boolValue, true)
        XCTAssertEqual(NSNumber(value: UInt8.min).boolValue, false)

        XCTAssertEqual(NSNumber(value: UInt16.max).boolValue, true)
        XCTAssertEqual(NSNumber(value: UInt16.min).boolValue, false)

        XCTAssertEqual(NSNumber(value: UInt32.max).boolValue, true)
        XCTAssertEqual(NSNumber(value: UInt32.min).boolValue, false)

        XCTAssertEqual(NSNumber(value: UInt64.max).boolValue, true)
        XCTAssertEqual(NSNumber(value: UInt64.min).boolValue, false)

        XCTAssertEqual(NSNumber(value: UInt.max).boolValue, true)
        XCTAssertEqual(NSNumber(value: UInt.min).boolValue, false)

        XCTAssertEqual(NSNumber(value: Int8.max).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int8.max - 1).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int8.min).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int8.min + 1).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int8(-1)).boolValue, true)

        XCTAssertEqual(NSNumber(value: Int16.max).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int16.max - 1).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int16.min).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int16.min + 1).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int16(-1)).boolValue, true)

        XCTAssertEqual(NSNumber(value: Int32.max).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int32.max - 1).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int32.min).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int32.min + 1).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int32(-1)).boolValue, true)

        XCTAssertEqual(NSNumber(value: Int64.max).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int64.max - 1).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int64.min).boolValue, false) // Darwin compatibility
        XCTAssertEqual(NSNumber(value: Int64.min + 1).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int64(-1)).boolValue, true)

        XCTAssertEqual(NSNumber(value: Int.max).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int.max - 1).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int.min).boolValue, false)   // Darwin compatibility
        XCTAssertEqual(NSNumber(value: Int.min + 1).boolValue, true)
        XCTAssertEqual(NSNumber(value: Int(-1)).boolValue, true)
    }

    func test_hash() {
        // A zero double hashes as zero.
        XCTAssertEqual(NSNumber(value: 0 as Double).hash, 0)

        // A positive double without fractional part should hash the same as the
        // equivalent 64 bit number.
        XCTAssertEqual(NSNumber(value: 123456 as Double).hash, NSNumber(value: 123456 as Int64).hash)

        // A negative double without fractional part should hash the same as the
        // equivalent 64 bit number.
        XCTAssertEqual(NSNumber(value: -123456 as Double).hash, NSNumber(value: -123456 as Int64).hash)

        #if arch(i386) || arch(arm)
            // This test used to fail in 32 bit platforms.
            XCTAssertNotEqual(NSNumber(value: 551048378.24883795 as Double).hash, 0)

            // Some hashes are correctly zero, though. Like the following which
            // was found by trial and error.
            XCTAssertEqual(NSNumber(value: 1.3819660135 as Double).hash, 0)
        #endif
    }
}