// RUN: rm -rf %t
// RUN: mkdir -p %t
//
// RUN: %gyb %s -o %t/main.swift
// RUN: if [ %target-runtime == "objc" ]; then \
// RUN:   %target-clang -fobjc-arc %S/Inputs/SlurpFastEnumeration/SlurpFastEnumeration.m -c -o %t/SlurpFastEnumeration.o; \
// RUN:   %line-directive %t/main.swift -- %target-build-swift %S/Inputs/DictionaryKeyValueTypes.swift %S/Inputs/DictionaryKeyValueTypesObjC.swift %t/main.swift -I %S/Inputs/SlurpFastEnumeration/ -Xlinker %t/SlurpFastEnumeration.o -o %t/Array -Xfrontend -disable-access-control; \
// RUN: else \
// RUN:   %line-directive %t/main.swift -- %target-build-swift %S/Inputs/DictionaryKeyValueTypes.swift %t/main.swift -o %t/Array -Xfrontend -disable-access-control; \
// RUN: fi
// RUN: %line-directive %t/main.swift -- %target-run %t/Array
// REQUIRES: executable_test

import StdlibUnittest
import StdlibCollectionUnittest


%{
all_array_types = ['ContiguousArray', 'ArraySlice', 'Array']
}%

extension Array {
  var identity: UnsafeRawPointer {
    return self._buffer.identity
  }
}

extension ArraySlice {
  var identity: UnsafeRawPointer {
    return self._buffer.identity
  }
}

extension ContiguousArray {
  var identity: UnsafeRawPointer {
    return self._buffer.identity
  }
}

var ArrayTestSuite = TestSuite("Array")

//===----------------------------------------------------------------------===//
// COW tests
// FIXME: incomplete.
//===----------------------------------------------------------------------===//

func withInoutInt(_ x: inout Int, body: (_ x: inout Int) -> Void) {
  body(&x)
}

func withInoutT<T>(_ x: inout T, body: (_ x: inout T) -> Void) {
  body(&x)
}

% for element_type in ['TestValueTy', 'TestBridgedValueTy']:
%   for array_type in all_array_types:
%     if element_type == 'TestBridgedValueTy':
#if _runtime(_ObjC)
%     end

ArrayTestSuite.test("${array_type}<${element_type}>/subscript(_: Int)/COW") {
  var a: ${array_type}<${array_type}<${element_type}>> = [[
    ${element_type}(10), ${element_type}(20), ${element_type}(30),
    ${element_type}(40), ${element_type}(50), ${element_type}(60),
    ${element_type}(70)
  ]]
  let identityOuter = a.identity
  var identityInner = a[0].identity

  func checkIdentity(_ stackTrace: SourceLocStack) {
%     if element_type == 'TestValueTy':
    // Does not reallocate storage because we changed a property based on a
    // reference; array storage was not changed.  Writeback of the inner array
    // does not happen.
    expectEqual(identityOuter, a.identity, stackTrace: stackTrace)
    expectEqual(identityInner, a[0].identity, stackTrace: stackTrace)
%     else:
    expectEqual(identityOuter, a.identity, stackTrace: stackTrace)

    // Should not reallocate storage.
    expectEqual(identityInner, a[0].identity, stackTrace: stackTrace)
%     end
  }

  // Mutating through a subscript expression.
  a[0][0] = ${element_type}(1010)

  checkIdentity(SourceLocStack().withCurrentLoc())

  a[0][1].value = 1020

  checkIdentity(SourceLocStack().withCurrentLoc())

  withInoutT(&a) {
    (x: inout ${array_type}<${array_type}<${element_type}>>) in
    x[0][2].value += 1000
  }

  checkIdentity(SourceLocStack().withCurrentLoc())

  withInoutT(&a[0]) {
    (x: inout ${array_type}<${element_type}>) in
    x[3].value += 1000
  }

  checkIdentity(SourceLocStack().withCurrentLoc())

  // This will reallocate storage unless Array uses addressors for subscript.
  //withInoutT(&a[0][4]) {
  //  (x: inout ${element_type}) in
  //  x.value += 1000
  //}

  // FIXME: both of these lines crash the compiler.
  // <rdar://problem/18439579> Passing an expression based on addressors as
  // 'inout' crashes SILGen
  //withInoutT(&a[0][5].value, { $0 += 1000 })
  //withInoutInt(&a[0][6].value, { $0 += 1000 })

  // Don't change the last element.

  expectEqual(1010, a[0][0].value)
  expectEqual(1020, a[0][1].value)
  expectEqual(1030, a[0][2].value)
  expectEqual(1040, a[0][3].value)
  expectEqual(50, a[0][4].value)
  expectEqual(60, a[0][5].value)
  expectEqual(70, a[0][6].value)
}

ArrayTestSuite.test("${array_type}<${element_type}>/subscript(_: Range<Int>)/COW") {
  var a: ${array_type}<${array_type}<${element_type}>> = [[
    ${element_type}(10), ${element_type}(20), ${element_type}(30),
    ${element_type}(40), ${element_type}(50), ${element_type}(60),
    ${element_type}(70), ${element_type}(80), ${element_type}(90),
  ]]
  let identityOuter = a.identity
  var identityInner = a[0].identity

  func checkIdentity(_ stackTrace: SourceLocStack) {
%     if element_type == 'TestValueTy':
    // Does not reallocate storage because we changed a property based on a
    // reference; array storage was not changed.
    expectEqual(identityOuter, a.identity, stackTrace: stackTrace)
    expectEqual(identityInner, a[0].identity, stackTrace: stackTrace)
%     else:
    expectEqual(identityOuter, a.identity, stackTrace: stackTrace)
    // Writeback happens in subscript(Range<Int>), but array notices that the new
    // value did not change.
    // Another writeback happens in Array.subscript(Int), but this is not what we
    // want.
    expectNotEqual(identityInner, a[0].identity, stackTrace: stackTrace)
    identityInner = a[0].identity
%     end
  }

  // Mutating through a subscript expression.
  a[0..<1][0][0] = ${element_type}(1010)

  // Reallocates storage because of the writeback in Array.subscript(Int).
  expectEqual(identityOuter, a.identity)
  expectNotEqual(identityInner, a[0].identity)
  identityInner = a[0].identity

  a[0..<1][0][1].value = 1020

  checkIdentity(SourceLocStack().withCurrentLoc())

  withInoutT(&a) {
    (x: inout ${array_type}<${array_type}<${element_type}>>) in
    x[0..<1][0][2].value += 1000
  }

  checkIdentity(SourceLocStack().withCurrentLoc())

  withInoutT(&a[0..<1]) {
    (x: inout ArraySlice<${array_type}<${element_type}>>) in
    x[0][3].value += 1000
  }

  checkIdentity(SourceLocStack().withCurrentLoc())

  withInoutT(&a[0..<1][0]) {
    (x: inout ${array_type}<${element_type}>) in
    x[4].value += 1000
  }

  checkIdentity(SourceLocStack().withCurrentLoc())

  withInoutT(&a[0..<1][0][5]) {
    (x: inout ${element_type}) in
    x.value += 1000
  }

  // Reallocates storage because of the writeback in Array.subscript(Int)
  // (writeback is being requested for the array element even though it is not
  // needed).
  expectEqual(identityOuter, a.identity)
  expectNotEqual(identityInner, a[0].identity)
  identityInner = a[0].identity

  withInoutT(&a[0..<1][0][6].value) {
    (x: inout Int) in
    x += 1000
  }

  checkIdentity(SourceLocStack().withCurrentLoc())

  withInoutInt(&a[0..<1][0][7].value) {
    (x: inout Int) in
    x += 1000
  }

  checkIdentity(SourceLocStack().withCurrentLoc())

  // Don't change the last element.

  expectEqual(1010, a[0][0].value)
  expectEqual(1020, a[0][1].value)
  expectEqual(1030, a[0][2].value)
  expectEqual(1040, a[0][3].value)
  expectEqual(1050, a[0][4].value)
  expectEqual(1060, a[0][5].value)
  expectEqual(1070, a[0][6].value)
  expectEqual(1080, a[0][7].value)
  expectEqual(90, a[0][8].value)
}

%     if element_type == 'TestBridgedValueTy':
#endif // _runtime(_ObjC)
%     end
%   end
% end

#if _runtime(_ObjC)
import Darwin
import StdlibUnittestFoundationExtras
import Foundation

// FIXME: all the tests below are applicable to ArraySlice, too.

//===----------------------------------------------------------------------===//
// NSArray -> Array bridging tests
// FIXME: incomplete.
//===----------------------------------------------------------------------===//

func isNativeArray<Element>(_ a: Array<Element>) -> Bool {
  return a._hoistableIsNativeTypeChecked()
}

func isCocoaArray<Element>(_ a: Array<Element>) -> Bool {
  return !isNativeArray(a)
}

func getAsImmutableNSArray(_ a: Array<Int>) -> NSArray {
  var elements = a.map { TestObjCValueTy($0) as AnyObject }
  return NSArray(objects: &elements, count: elements.count)
}

func getAsNSArray(_ a: Array<Int>) -> NSArray {
  // Return an `NSMutableArray` to make sure that it has a unique
  // pointer identity.
  return getAsNSMutableArray(a)
}

func getAsNSMutableArray(_ a: Array<Int>) -> NSMutableArray {
  let result = NSMutableArray()
  for element in a {
    result.add(TestObjCValueTy(element))
  }
  return result
}

@objc
class CustomImmutableNSArray : NSArray {
  init(_privateInit: ()) {
    super.init()
  }

  override init() {
    expectUnreachable()
    super.init()
  }

  override init(objects: UnsafePointer<AnyObject>, count: Int) {
    super.init(objects: objects, count: count)
  }

  required init(coder aDecoder: NSCoder) {
    fatalError("init(coder:) not implemented by CustomImmutableNSArray")
  }

  @objc(copyWithZone:)
  override func copy(with zone: NSZone?) -> Any {
    CustomImmutableNSArray.timesCopyWithZoneWasCalled += 1
    return self
  }

  @objc
  override func object(at index: Int) -> Any {
    CustomImmutableNSArray.timesObjectAtIndexWasCalled += 1
    return _data[index]
  }

  @objc
  override var count: Int {
    CustomImmutableNSArray.timesCountWasCalled += 1
    return _data.count
  }

  @objc
  override func countByEnumerating(
    with state: UnsafeMutablePointer<NSFastEnumerationState>,
    objects: AutoreleasingUnsafeMutablePointer<AnyObject?>,
    count: Int
  ) -> Int {
    var theState = state.pointee
    if theState.state == 0 {
      theState.state = 1
      theState.itemsPtr =
        AutoreleasingUnsafeMutablePointer(_data._baseAddressIfContiguous)
      theState.mutationsPtr = _fastEnumerationStorageMutationsPtr
      state.pointee = theState
      return _data.count
    }
    return 0
  }

  let _data = [ 10, 20, 30 ].map { TestObjCValueTy($0) }

  static var timesCopyWithZoneWasCalled = 0
  static var timesObjectAtIndexWasCalled = 0
  static var timesCountWasCalled = 0
}

ArrayTestSuite.test("BridgedFromObjC.Verbatim.BridgeUsingAs") {
  do {
    let source = [ 10, 20, 30 ]
    let nsa = getAsNSArray(source)
    var result = nsa as Array
    expectTrue(isCocoaArray(result))
    expectType(Array<AnyObject>.self, &result)
    checkSequence(source.map { TestObjCValueTy($0) as AnyObject }, result) {
      ($0 as! TestObjCValueTy).value == ($1 as! TestObjCValueTy).value
    }
  }
  do {
    let source = [ 10, 20, 30 ]
    let nsa = getAsNSArray(source)
    var result = nsa as! Array<TestObjCValueTy>
    expectTrue(isCocoaArray(result))
    expectType(Array<TestObjCValueTy>.self, &result)
    checkSequence(source.map { TestObjCValueTy($0) }, result) {
      $0.value == $1.value
    }
  }
}

ArrayTestSuite.test("BridgedFromObjC.Nonverbatim.BridgeUsingAs") {
  let source = [ 10, 20, 30 ]
  let nsa = getAsNSArray(source)
  var result = nsa as! Array<TestBridgedValueTy>
  expectTrue(isNativeArray(result))
  expectType(Array<TestBridgedValueTy>.self, &result)
  checkSequence(source.map { TestBridgedValueTy($0) }, result) {
    $0.value == $1.value
  }
}


ArrayTestSuite.test("BridgedFromObjC.Verbatim.ArrayIsCopied") {
  let source = [ 10, 20, 30 ]
  let nsa = getAsNSMutableArray(source)
  let result = nsa as Array<AnyObject>
  expectTrue(isCocoaArray(result))

  // Delete the value from NSMutableArray.
  expectEqual(20, (nsa[1] as! TestObjCValueTy).value)
  nsa.removeObject(at: 1)
  expectEqual(30, (nsa[1] as! TestObjCValueTy).value)

  // Check that the Array is not affected.
  expectEqual(20, result[1].value)
}

ArrayTestSuite.test("BridgedFromObjC.Nonverbatim.ArrayIsCopied") {
  let source = [ 10, 20, 30 ]
  let nsa = getAsNSMutableArray(source)
  var result = nsa as AnyObject as! Array<TestBridgedValueTy>
  expectTrue(isNativeArray(result))

  // Delete the value from NSMutableArray.
  expectEqual(20, (nsa[1] as! TestObjCValueTy).value)
  nsa.removeObject(at: 1)
  expectEqual(30, (nsa[1] as! TestObjCValueTy).value)

  // Check that the Array is not affected.
  expectEqual(20, result[1].value)
}


ArrayTestSuite.test("BridgedFromObjC.Verbatim.NSArrayIsRetained") {
  let nsa = NSArray(array: getAsNSArray([ 10, 20, 30 ]))
  var a: Array<AnyObject> = convertNSArrayToArray(nsa)
  var bridgedBack: NSArray = convertArrayToNSArray(a)

  expectEqual(
    unsafeBitCast(nsa, to: Int.self),
    unsafeBitCast(bridgedBack, to: Int.self))

  _fixLifetime(nsa)
  _fixLifetime(a)
  _fixLifetime(bridgedBack)
}

ArrayTestSuite.test("BridgedFromObjC.Nonverbatim.NSArrayIsCopied") {
  let nsa = NSArray(array: getAsNSArray([ 10, 20, 30 ]))
  var a: Array<TestBridgedValueTy> = convertNSArrayToArray(nsa)
  var bridgedBack: NSArray = convertArrayToNSArray(a)

  expectNotEqual(
    unsafeBitCast(nsa, to: Int.self),
    unsafeBitCast(bridgedBack, to: Int.self))

  _fixLifetime(nsa)
  _fixLifetime(a)
  _fixLifetime(bridgedBack)
}


ArrayTestSuite.test("BridgedFromObjC.Verbatim.ImmutableArrayIsRetained") {
  let nsa: NSArray = CustomImmutableNSArray(_privateInit: ())

  CustomImmutableNSArray.timesCopyWithZoneWasCalled = 0
  CustomImmutableNSArray.timesObjectAtIndexWasCalled = 0
  CustomImmutableNSArray.timesCountWasCalled = 0
  let a: Array<AnyObject> = convertNSArrayToArray(nsa)
  expectEqual(1, CustomImmutableNSArray.timesCopyWithZoneWasCalled)
  expectEqual(0, CustomImmutableNSArray.timesObjectAtIndexWasCalled)
  expectEqual(0, CustomImmutableNSArray.timesCountWasCalled)

  let bridgedBack: NSArray = convertArrayToNSArray(a)

  expectEqual(
    unsafeBitCast(nsa, to: Int.self),
    unsafeBitCast(bridgedBack, to: Int.self))

  _fixLifetime(nsa)
  _fixLifetime(a)
  _fixLifetime(bridgedBack)
}

ArrayTestSuite.test("BridgedFromObjC.Nonverbatim.ImmutableArrayIsCopied") {
  let nsa: NSArray = CustomImmutableNSArray(_privateInit: ())

  CustomImmutableNSArray.timesCopyWithZoneWasCalled = 0
  CustomImmutableNSArray.timesObjectAtIndexWasCalled = 0
  CustomImmutableNSArray.timesCountWasCalled = 0
  TestBridgedValueTy.bridgeOperations = 0
  var a: Array<TestBridgedValueTy> = []

  // FIXME: bridging shouldn't dump array contents into the autorelease pool.
  autoreleasepoolIfUnoptimizedReturnAutoreleased {
    a = convertNSArrayToArray(nsa)
    expectEqual(1, CustomImmutableNSArray.timesCopyWithZoneWasCalled)
    expectEqual(3, CustomImmutableNSArray.timesObjectAtIndexWasCalled)
    expectNotEqual(0, CustomImmutableNSArray.timesCountWasCalled)
    expectEqual(3, TestBridgedValueTy.bridgeOperations)
  }

  let bridgedBack: NSArray = convertArrayToNSArray(a)

  expectNotEqual(
    unsafeBitCast(nsa, to: Int.self),
    unsafeBitCast(bridgedBack, to: Int.self))

  _fixLifetime(nsa)
  _fixLifetime(a)
  _fixLifetime(bridgedBack)
}

// FIXME: test API calls on the BridgedFromObjC arrays.

//===----------------------------------------------------------------------===//
// Array -> NSArray bridging tests
//
// Element is bridged verbatim.
//
// FIXME: incomplete.
//===----------------------------------------------------------------------===//

ArrayTestSuite.test("BridgedToObjC.Verbatim.BridgeUsingAs") {
  let source = [ 10, 20, 30 ].map { TestObjCValueTy($0) }
  let result = source as NSArray
  expectTrue(isNativeNSArray(result))
  expectEqual(3, result.count)
  autoreleasepoolIfUnoptimizedReturnAutoreleased {
    expectEqual(10, (result[0] as! TestObjCValueTy).value)
    expectEqual(20, (result[1] as! TestObjCValueTy).value)
    expectEqual(30, (result[2] as! TestObjCValueTy).value)
  }
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/count/empty") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 0)
  expectEqual(0, a.count)
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/count") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged()
  expectEqual(3, a.count)
}

for index in [ -100, -1, 0, 1, 100 ] {
  ArrayTestSuite.test(
    "BridgedToObjC/Verbatim/objectAtIndex/empty/trap/\(index)")
    .crashOutputMatches("Array index out of range")
    .code {
    let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 0)
    expectCrashLater()
    a.object(at: index)
  }
}

for index in [ -100, -1, 3, 4, 100 ] {
  ArrayTestSuite.test("BridgedToObjC/Verbatim/objectAtIndex/trap/\(index)")
    .crashOutputMatches("Array index out of range")
    .code {
    let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 3)
    expectCrashLater()
    a.object(at: index)
  }
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/objectAtIndex") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 3)

  var v: AnyObject = a.object(at: 0) as AnyObject
  expectEqual(10, (v as! TestObjCValueTy).value)
  let idValue0 = unsafeBitCast(v, to: UInt.self)

  v = a.object(at: 1) as AnyObject
  expectEqual(20, (v as! TestObjCValueTy).value)
  let idValue1 = unsafeBitCast(v, to: UInt.self)

  v = a.object(at: 2) as AnyObject
  expectEqual(30, (v as! TestObjCValueTy).value)
  let idValue2 = unsafeBitCast(v, to: UInt.self)

  for i in 0..<3 {
    expectEqual(idValue0, unsafeBitCast(a.object(at: 0) as AnyObject, to: UInt.self))
    expectEqual(idValue1, unsafeBitCast(a.object(at: 1) as AnyObject, to: UInt.self))
    expectEqual(idValue2, unsafeBitCast(a.object(at: 2) as AnyObject, to: UInt.self))
  }

  expectAutoreleasedKeysAndValues(unopt: (0, 3))
}

for indexRange in [
  -2..<(-2), 1..<1,
  0..<4, -2..<(-1), -1..<2, 0..<1, 2..<4, 4..<5
] as [Range<Int>] {
  ArrayTestSuite.test("BridgedToObjC/Verbatim/getObjects/empty/trap/\(indexRange)")
    .crashOutputMatches("Array index out of range")
    .code {
    let a = getBridgedNSArrayOfRefTypeVerbatimBridged(
      numElements: 0, capacity: 16)
    let buffer = UnsafeMutablePointer<AnyObject>.allocate(capacity: 16)
    a.available_getObjects(
      AutoreleasingUnsafeMutablePointer(buffer), range: NSRange(0..<0))
    expectCrashLater()
    a.available_getObjects(
      AutoreleasingUnsafeMutablePointer(buffer), range: NSRange(indexRange))
  }
}

for indexRange in [ 0..<4, -2..<(-1), -1..<2, 2..<4, 4..<5 ] as [Range<Int>] {
  ArrayTestSuite.test("BridgedToObjC/Verbatim/getObjects/trap/\(indexRange)")
    .crashOutputMatches("Array index out of range")
    .code {
    let a = getBridgedNSArrayOfRefTypeVerbatimBridged(
      numElements: 3, capacity: 16)
    let buffer = UnsafeMutablePointer<AnyObject>.allocate(capacity: 16)
    a.available_getObjects(
      AutoreleasingUnsafeMutablePointer(buffer), range: NSRange(0..<3))
    expectCrashLater()
    a.available_getObjects(
      AutoreleasingUnsafeMutablePointer(buffer), range: NSRange(indexRange))
  }
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/getObjects") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 3)
  let buffer = UnsafeMutablePointer<AnyObject>.allocate(capacity: 16)
  a.available_getObjects(
    AutoreleasingUnsafeMutablePointer(buffer), range: NSRange(0..<3))

  var v: AnyObject = buffer[0]
  expectEqual(10, (v as! TestObjCValueTy).value)
  let idValue0 = unsafeBitCast(v, to: UInt.self)

  v = buffer[1]
  expectEqual(20, (v as! TestObjCValueTy).value)
  let idValue1 = unsafeBitCast(v, to: UInt.self)

  v = buffer[2]
  expectEqual(30, (v as! TestObjCValueTy).value)
  let idValue2 = unsafeBitCast(v, to: UInt.self)

  for i in 0..<3 {
    expectEqual(idValue0, unsafeBitCast(a.object(at: 0) as AnyObject, to: UInt.self))
    expectEqual(idValue1, unsafeBitCast(a.object(at: 1) as AnyObject, to: UInt.self))
    expectEqual(idValue2, unsafeBitCast(a.object(at: 2) as AnyObject, to: UInt.self))
  }

  buffer.deallocate(capacity: 3)
  _fixLifetime(a)

  expectAutoreleasedKeysAndValues(unopt: (0, 3))
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/copyWithZone") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 3)
  let copy: AnyObject = a.copy(with: nil) as AnyObject
  expectEqual(
    unsafeBitCast(a, to: UInt.self), unsafeBitCast(copy, to: UInt.self))
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/FastEnumeration/UseFromSwift/Empty") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 0)

  checkArrayFastEnumerationFromSwift(
    [], a, { a },
    { ($0 as! TestObjCValueTy).value })
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/FastEnumeration/UseFromSwift/3") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 3)

  checkArrayFastEnumerationFromSwift(
    [ 10, 20, 30 ],
    a, { a },
    { ($0 as! TestObjCValueTy).value })
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/FastEnumeration/UseFromSwift/7") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 7)

  checkArrayFastEnumerationFromSwift(
    [ 10, 20, 30, 40, 50, 60, 70 ],
    a, { a },
    { ($0 as! TestObjCValueTy).value })
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/FastEnumeration/UseFromObjC/Empty") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 0)

  checkArrayFastEnumerationFromObjC(
    [], a, { a },
    { ($0 as! TestObjCValueTy).value })
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/FastEnumeration/UseFromObjC") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 3)

  checkArrayFastEnumerationFromObjC(
    [ 10, 20, 30 ],
    a, { a },
    { ($0 as! TestObjCValueTy).value })
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/ObjectEnumerator/FastEnumeration/UseFromSwift/Empty") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 0)

  checkArrayFastEnumerationFromSwift(
    [], a, { a.objectEnumerator() },
    { ($0 as! TestObjCValueTy).value })
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/ObjectEnumerator/FastEnumeration/UseFromSwift") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 3)

  checkArrayFastEnumerationFromSwift(
    [ 10, 20, 30 ],
    a, { a.objectEnumerator() },
    { ($0 as! TestObjCValueTy).value })
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/ObjectEnumerator/FastEnumeration/UseFromSwift/Partial") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 9)

  checkArrayEnumeratorPartialFastEnumerationFromSwift(
    [ 10, 20, 30, 40, 50, 60, 70, 80, 90 ],
    a, maxFastEnumerationItems: 5,
    { ($0 as! TestObjCValueTy).value })
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/ObjectEnumerator/FastEnumeration/UseFromObjC") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 3)

  checkArrayFastEnumerationFromObjC(
    [ 10, 20, 30 ],
    a, { a.objectEnumerator() },
    { ($0 as! TestObjCValueTy).value })
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/BridgeBack/Reallocate") {
  let a = getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 3)

  var v: AnyObject = a[0] as AnyObject
  expectEqual(10, (v as! TestObjCValueTy).value)
  let idValue0 = unsafeBitCast(v, to: UInt.self)

  v = a[1] as AnyObject
  expectEqual(20, (v as! TestObjCValueTy).value)
  let idValue1 = unsafeBitCast(v, to: UInt.self)

  v = a[2] as AnyObject
  expectEqual(30, (v as! TestObjCValueTy).value)
  let idValue2 = unsafeBitCast(v, to: UInt.self)

  // Bridge back to native array.
  var native: [TestObjCValueTy] = convertNSArrayToArray(a)
  native[0] = TestObjCValueTy(110)
  native[1] = TestObjCValueTy(120)
  native[2] = TestObjCValueTy(130)
  native.append(TestObjCValueTy(140))

  // Ensure that the compiler does not elide mutation of the native array.
  _blackHole(native)

  // Check that mutating the native array did not affect the bridged array.
  expectEqual(3, a.count)
  expectEqual(idValue0, unsafeBitCast(a.object(at: 0) as AnyObject, to: UInt.self))
  expectEqual(idValue1, unsafeBitCast(a.object(at: 1) as AnyObject, to: UInt.self))
  expectEqual(idValue2, unsafeBitCast(a.object(at: 2) as AnyObject, to: UInt.self))

  expectAutoreleasedKeysAndValues(unopt: (0, 3))
}

ArrayTestSuite.test("BridgedToObjC/Verbatim/BridgeBack/Adopt") {
  // Bridge back to native array.
  var native: [TestObjCValueTy] = 
    getBridgedNSArrayOfRefTypeVerbatimBridged(numElements: 3) as! Array
  
  let identity1 = unsafeBitCast(native, to: UInt.self)

  // Mutate elements, but don't change count.
  native[0] = TestObjCValueTy(110)
  native[1] = TestObjCValueTy(120)
  native[2] = TestObjCValueTy(130)

  // Expect no reallocations.
  expectEqual(identity1, unsafeBitCast(native, to: UInt.self))
}

//===----------------------------------------------------------------------===//
// Array -> NSArray bridging tests
//
// Element is bridged non-verbatim.
//
// FIXME: incomplete.
//===----------------------------------------------------------------------===//

ArrayTestSuite.test("BridgedToObjC.Nonverbatim.BridgeUsingAs") {
  let source = [ 10, 20, 30 ].map { TestBridgedValueTy($0) }
  var result = source as NSArray
  expectTrue(isNativeNSArray(result))
  expectEqual(3, result.count)
  autoreleasepoolIfUnoptimizedReturnAutoreleased {
    expectEqual(10, (result[0] as! TestBridgedValueTy).value)
    expectEqual(20, (result[1] as! TestBridgedValueTy).value)
    expectEqual(30, (result[2] as! TestBridgedValueTy).value)
  }
}

ArrayTestSuite.test("BridgedToObjC/Custom/count/empty") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 0)
  expectEqual(0, a.count)

  expectEqual(0, TestBridgedValueTy.bridgeOperations)
}

ArrayTestSuite.test("BridgedToObjC/Custom/count") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged()
  expectEqual(3, a.count)

  expectEqual(0, TestBridgedValueTy.bridgeOperations)
}

for index in [ -100, -1, 0, 1, 100 ] {
  ArrayTestSuite.test(
    "BridgedToObjC/Custom/objectAtIndex/empty/trap/\(index)") {
    let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 0)
    expectCrashLater()
    a.object(at: index)
  }
}

for index in [ -100, -1, 3, 4, 100 ] {
  ArrayTestSuite.test("BridgedToObjC/Custom/objectAtIndex/trap/\(index)") {
    let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 3)
    expectCrashLater()
    a.object(at: index)
  }
}

ArrayTestSuite.test("BridgedToObjC/Custom/objectAtIndex") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 3)

  var v: AnyObject = a.object(at: 0) as AnyObject
  expectEqual(10, (v as! TestObjCValueTy).value)
  let idValue0 = unsafeBitCast(v, to: UInt.self)

  v = a.object(at: 1) as AnyObject
  expectEqual(20, (v as! TestObjCValueTy).value)
  let idValue1 = unsafeBitCast(v, to: UInt.self)

  v = a.object(at: 2) as AnyObject
  expectEqual(30, (v as! TestObjCValueTy).value)
  let idValue2 = unsafeBitCast(v, to: UInt.self)

  for i in 0..<3 {
    expectEqual(idValue0, unsafeBitCast(a.object(at: 0) as AnyObject, to: UInt.self))
    expectEqual(idValue1, unsafeBitCast(a.object(at: 1) as AnyObject, to: UInt.self))
    expectEqual(idValue2, unsafeBitCast(a.object(at: 2) as AnyObject, to: UInt.self))
  }

  expectEqual(3, TestBridgedValueTy.bridgeOperations)
  expectAutoreleasedKeysAndValues(unopt: (0, 3))
}

for indexRange in [
  -2..<(-2), 1..<1,
  0..<4, -2..<(-1), -1..<2, 0..<1, 2..<4, 4..<5
] as [Range<Int>] {
  ArrayTestSuite.test("BridgedToObjC/Custom/getObjects/empty/trap/\(indexRange)")
    .crashOutputMatches("Array index out of range")
    .code {
    let a = getBridgedNSArrayOfValueTypeCustomBridged(
      numElements: 0, capacity: 16)
    let buffer = UnsafeMutablePointer<AnyObject>.allocate(capacity: 16)
    a.available_getObjects(
      AutoreleasingUnsafeMutablePointer(buffer), range: NSRange(0..<0))
    expectCrashLater()
    a.available_getObjects(
      AutoreleasingUnsafeMutablePointer(buffer), range: NSRange(indexRange))
  }
}

for indexRange in [ 0..<4, -2..<(-1), -1..<2, 2..<4, 4..<5 ] as [Range<Int>] {
  ArrayTestSuite.test("BridgedToObjC/Custom/getObjects/trap/\(indexRange)")
    .crashOutputMatches("Array index out of range")
    .code {
    let a = getBridgedNSArrayOfValueTypeCustomBridged(
      numElements: 3, capacity: 16)
    let buffer = UnsafeMutablePointer<AnyObject>.allocate(capacity: 16)
    a.available_getObjects(
      AutoreleasingUnsafeMutablePointer(buffer), range: NSRange(0..<3))
    expectCrashLater()
    a.available_getObjects(
      AutoreleasingUnsafeMutablePointer(buffer), range: NSRange(indexRange))
  }
}

ArrayTestSuite.test("BridgedToObjC/Custom/getObjects") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 3)
  let buffer = UnsafeMutablePointer<AnyObject>.allocate(capacity: 16)
  a.available_getObjects(
    AutoreleasingUnsafeMutablePointer(buffer), range: NSRange(0..<3))

  var v: AnyObject = buffer[0]
  expectEqual(10, (v as! TestObjCValueTy).value)
  let idValue0 = unsafeBitCast(v, to: UInt.self)

  v = buffer[1]
  expectEqual(20, (v as! TestObjCValueTy).value)
  let idValue1 = unsafeBitCast(v, to: UInt.self)

  v = buffer[2]
  expectEqual(30, (v as! TestObjCValueTy).value)
  let idValue2 = unsafeBitCast(v, to: UInt.self)

  for i in 0..<3 {
    expectEqual(idValue0, unsafeBitCast(a.object(at: 0) as AnyObject, to: UInt.self))
    expectEqual(idValue1, unsafeBitCast(a.object(at: 1) as AnyObject, to: UInt.self))
    expectEqual(idValue2, unsafeBitCast(a.object(at: 2) as AnyObject, to: UInt.self))
  }

  buffer.deallocate(capacity: 3)
  _fixLifetime(a)

  expectEqual(3, TestBridgedValueTy.bridgeOperations)
  expectAutoreleasedKeysAndValues(unopt: (0, 3))
}

ArrayTestSuite.test("BridgedToObjC/Custom/copyWithZone") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 3)
  let copy: AnyObject = a.copy(with: nil) as AnyObject
  expectEqual(
    unsafeBitCast(a, to: UInt.self),
    unsafeBitCast(copy, to: UInt.self))
}

ArrayTestSuite.test("BridgedToObjC/Custom/FastEnumeration/UseFromSwift/Empty") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 0)

  checkArrayFastEnumerationFromSwift(
    [], a, { a },
    { ($0 as! TestObjCValueTy).value })

  expectEqual(0, TestBridgedValueTy.bridgeOperations)
}

ArrayTestSuite.test("BridgedToObjC/Custom/FastEnumeration/UseFromSwift/3") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 3)

  checkArrayFastEnumerationFromSwift(
    [ 10, 20, 30 ],
    a, { a },
    { ($0 as! TestObjCValueTy).value })

  expectEqual(3, TestBridgedValueTy.bridgeOperations)
}

ArrayTestSuite.test("BridgedToObjC/Custom/FastEnumeration/UseFromSwift/7") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 7)

  checkArrayFastEnumerationFromSwift(
    [ 10, 20, 30, 40, 50, 60, 70 ],
    a, { a },
    { ($0 as! TestObjCValueTy).value })

  expectEqual(7, TestBridgedValueTy.bridgeOperations)
}

ArrayTestSuite.test("BridgedToObjC/Custom/FastEnumeration/UseFromObjC/Empty") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 0)

  checkArrayFastEnumerationFromObjC(
    [], a, { a },
    { ($0 as! TestObjCValueTy).value })

  expectEqual(0, TestBridgedValueTy.bridgeOperations)
}

ArrayTestSuite.test("BridgedToObjC/Custom/FastEnumeration/UseFromObjC") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 3)

  checkArrayFastEnumerationFromObjC(
    [ 10, 20, 30 ],
    a, { a },
    { ($0 as! TestObjCValueTy).value })

  expectEqual(3, TestBridgedValueTy.bridgeOperations)
}

ArrayTestSuite.test("BridgedToObjC/Custom/ObjectEnumerator/FastEnumeration/UseFromSwift/Empty") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 0)

  checkArrayFastEnumerationFromSwift(
    [], a, { a.objectEnumerator() },
    { ($0 as! TestObjCValueTy).value })

  expectEqual(0, TestBridgedValueTy.bridgeOperations)
}

ArrayTestSuite.test("BridgedToObjC/Custom/ObjectEnumerator/FastEnumeration/UseFromSwift") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 3)

  checkArrayFastEnumerationFromSwift(
    [ 10, 20, 30 ],
    a, { a.objectEnumerator() },
    { ($0 as! TestObjCValueTy).value })

  expectEqual(3, TestBridgedValueTy.bridgeOperations)
}

ArrayTestSuite.test("BridgedToObjC/Custom/ObjectEnumerator/FastEnumeration/UseFromSwift/Partial") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 9)

  checkArrayEnumeratorPartialFastEnumerationFromSwift(
    [ 10, 20, 30, 40, 50, 60, 70, 80, 90 ],
    a, maxFastEnumerationItems: 5,
    { ($0 as! TestObjCValueTy).value })

  expectEqual(9, TestBridgedValueTy.bridgeOperations)
}

ArrayTestSuite.test("BridgedToObjC/Custom/ObjectEnumerator/FastEnumeration/UseFromObjC") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 3)

  checkArrayFastEnumerationFromObjC(
    [ 10, 20, 30 ],
    a, { a.objectEnumerator() },
    { ($0 as! TestObjCValueTy).value })

  expectEqual(3, TestBridgedValueTy.bridgeOperations)
}

ArrayTestSuite.test("BridgedToObjC/Custom/BridgeBack/Cast") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 3)

  var v: AnyObject = a[0] as AnyObject
  expectEqual(10, (v as! TestObjCValueTy).value)
  let idValue0 = unsafeBitCast(v, to: UInt.self)

  v = a[1] as AnyObject
  expectEqual(20, (v as! TestObjCValueTy).value)
  let idValue1 = unsafeBitCast(v, to: UInt.self)

  v = a[2] as AnyObject
  expectEqual(30, (v as! TestObjCValueTy).value)
  let idValue2 = unsafeBitCast(v, to: UInt.self)

  // Bridge back to native array with a cast.
  var native: [TestObjCValueTy] = convertNSArrayToArray(a)
  native[0] = TestObjCValueTy(110)
  native[1] = TestObjCValueTy(120)
  native[2] = TestObjCValueTy(130)
  native.append(TestObjCValueTy(140))

  // Ensure that the compiler does not elide mutation of the native array.
  _blackHole(native)

  // Check that mutating the native array did not affect the bridged array.
  expectEqual(3, a.count)
  expectEqual(idValue0, unsafeBitCast(a.object(at: 0) as AnyObject, to: UInt.self))
  expectEqual(idValue1, unsafeBitCast(a.object(at: 1) as AnyObject, to: UInt.self))
  expectEqual(idValue2, unsafeBitCast(a.object(at: 2) as AnyObject, to: UInt.self))

  expectAutoreleasedKeysAndValues(unopt: (0, 3))
}

ArrayTestSuite.test("BridgedToObjC/Custom/BridgeBack/Reallocate") {
  let a = getBridgedNSArrayOfValueTypeCustomBridged(numElements: 3)

  var v: AnyObject = a[0] as AnyObject
  expectEqual(10, (v as! TestObjCValueTy).value)
  let idValue0 = unsafeBitCast(v, to: UInt.self)

  v = a[1] as AnyObject
  expectEqual(20, (v as! TestObjCValueTy).value)
  let idValue1 = unsafeBitCast(v, to: UInt.self)

  v = a[2] as AnyObject
  expectEqual(30, (v as! TestObjCValueTy).value)
  let idValue2 = unsafeBitCast(v, to: UInt.self)

  // Bridge back to native array.
  var native: [TestBridgedValueTy] = convertNSArrayToArray(a)
  native[0] = TestBridgedValueTy(110)
  native[1] = TestBridgedValueTy(120)
  native[2] = TestBridgedValueTy(130)
  native.append(TestBridgedValueTy(140))

  // Ensure that the compiler does not elide mutation of the native array.
  _blackHole(native)

  // Check that mutating the native array did not affect the bridged array.
  expectEqual(3, a.count)
  expectEqual(idValue0, unsafeBitCast(a.object(at: 0) as AnyObject, to: UInt.self))
  expectEqual(idValue1, unsafeBitCast(a.object(at: 1) as AnyObject, to: UInt.self))
  expectEqual(idValue2, unsafeBitCast(a.object(at: 2) as AnyObject, to: UInt.self))

  expectAutoreleasedKeysAndValues(unopt: (0, 3))
}

ArrayTestSuite.test("BridgedToObjC/Custom/BridgeBack/Adopt") {
  // Bridge back to native array.
  var native: [TestBridgedValueTy] = convertNSArrayToArray(
    getBridgedNSArrayOfValueTypeCustomBridged(numElements: 3))
  let identity1 = unsafeBitCast(native, to: UInt.self)

  // Mutate elements, but don't change count.
  native[0] = TestBridgedValueTy(110)
  native[1] = TestBridgedValueTy(120)
  native[2] = TestBridgedValueTy(130)

  // Expect no reallocations.
  expectEqual(identity1, unsafeBitCast(native, to: UInt.self))
}

//===----------------------------------------------------------------------===//
// NSArray -> Array -> NSArray bridging tests.
//===----------------------------------------------------------------------===//

ArrayTestSuite.test("BridgedToObjC.Verbatim.RoundtripThroughSwiftArray") {
% for (MiddleType, AsCast) in [
%     ('Array<AnyObject>', 'as'),
%     ('Array<TestObjCValueTy>', 'as!'),
% ]:
  do {
    let nsa: NSArray = getAsImmutableNSArray([ 10, 20, 30 ])
    let a: ${MiddleType} = convertNSArrayToArray(nsa)
    let bridgedBack = convertArrayToNSArray(a)

    expectEqual(
      unsafeBitCast(nsa, to: Int.self),
      unsafeBitCast(bridgedBack, to: Int.self))

    _fixLifetime(nsa)
    _fixLifetime(a)
    _fixLifetime(bridgedBack)
  }
  do {
    let nsa: NSArray = getAsImmutableNSArray([ 10, 20, 30 ])
    let a = nsa ${AsCast} ${MiddleType}
    let bridgedBack: NSArray = a as NSArray

    expectEqual(
      unsafeBitCast(nsa, to: Int.self),
      unsafeBitCast(bridgedBack, to: Int.self))

    _fixLifetime(nsa)
    _fixLifetime(a)
    _fixLifetime(bridgedBack)
  }
% end
}

ArrayTestSuite.test("BridgedToObjC.Nonverbatim.RoundtripThroughSwiftArray") {
  do {
    TestBridgedValueTy.bridgeOperations = 0
    let nsa: NSArray = getAsImmutableNSArray([ 10, 20, 30 ])
    let a: Array<TestBridgedValueTy> = convertNSArrayToArray(nsa)
    let bridgedBack = convertArrayToNSArray(a)
    expectEqual(3, TestBridgedValueTy.bridgeOperations)
  }
  do {
    TestBridgedValueTy.bridgeOperations = 0
    let nsa: NSArray = getAsImmutableNSArray([ 10, 20, 30 ])
    let a = nsa as! Array<TestBridgedValueTy>
    let bridgedBack: NSArray = a as NSArray
    expectEqual(3, TestBridgedValueTy.bridgeOperations)
  }
}

ArrayTestSuite.setUp {
  resetLeaksOfDictionaryKeysValues()
  resetLeaksOfObjCDictionaryKeysValues()
  TestBridgedValueTy.bridgeOperations = 0
}

ArrayTestSuite.tearDown {
  if _isDebugAssertConfiguration() {
    // The return autorelease optimization does not happen reliable.
    expectNoLeaksOfDictionaryKeysValues()
    expectNoLeaksOfObjCDictionaryKeysValues()
  }
}

#endif // _runtime(_ObjC)

runAllTests()