| // RUN: %target-run-stdlib-swift |
| // REQUIRES: executable_test |
| |
| import Swift |
| import SwiftPrivate |
| import StdlibUnittest |
| |
| |
| var HashingTestSuite = TestSuite("Hashing") |
| |
| HashingTestSuite.test("_mixUInt32/GoldenValues") { |
| expectEqual(0x11b882c9, _mixUInt32(0x0)) |
| expectEqual(0x60d0aafb, _mixUInt32(0x1)) |
| expectEqual(0x636847b5, _mixUInt32(0xffff)) |
| expectEqual(0x203f5350, _mixUInt32(0xffff_ffff)) |
| |
| expectEqual(0xb8747ef6, _mixUInt32(0xa62301f9)) |
| expectEqual(0xef4eeeb2, _mixUInt32(0xfe1b46c6)) |
| expectEqual(0xd44c9cf1, _mixUInt32(0xe4daf7ca)) |
| expectEqual(0xfc1eb1de, _mixUInt32(0x33ff6f5c)) |
| expectEqual(0x5605f0c0, _mixUInt32(0x13c2a2b8)) |
| expectEqual(0xd9c48026, _mixUInt32(0xf3ad1745)) |
| expectEqual(0x471ab8d0, _mixUInt32(0x656eff5a)) |
| expectEqual(0xfe265934, _mixUInt32(0xfd2268c9)) |
| } |
| |
| HashingTestSuite.test("_mixInt32/GoldenValues") { |
| expectEqual(Int32(bitPattern: 0x11b882c9), _mixInt32(0x0)) |
| } |
| |
| HashingTestSuite.test("_mixUInt64/GoldenValues") { |
| expectEqual(0xb2b2_4f68_8dc4_164d, _mixUInt64(0x0)) |
| expectEqual(0x792e_33eb_0685_57de, _mixUInt64(0x1)) |
| expectEqual(0x9ec4_3423_1b42_3dab, _mixUInt64(0xffff)) |
| expectEqual(0x4cec_e9c9_01fa_9a84, _mixUInt64(0xffff_ffff)) |
| expectEqual(0xcba5_b650_bed5_b87c, _mixUInt64(0xffff_ffff_ffff)) |
| expectEqual(0xe583_5646_3fb8_ac99, _mixUInt64(0xffff_ffff_ffff_ffff)) |
| |
| expectEqual(0xf5d0079f828d43a5, _mixUInt64(0x94ce7d9319f8d233)) |
| expectEqual(0x61900a6be9db9c3f, _mixUInt64(0x2728821e8c5b1f7)) |
| expectEqual(0xf2fd34b1b7d4b46e, _mixUInt64(0xe7f67ec98c64f482)) |
| expectEqual(0x216199ed628c821, _mixUInt64(0xd7c277b5438873ac)) |
| expectEqual(0xb1b486ff5f2e0e53, _mixUInt64(0x8399f1d563c42f82)) |
| expectEqual(0x61acc92bd91c030, _mixUInt64(0x488cefd48a2c4bfd)) |
| expectEqual(0xa7a52d6e4a8e3ddf, _mixUInt64(0x270a15116c351f95)) |
| expectEqual(0x98ceedc363c4e56a, _mixUInt64(0xe5fb9b5f6c426a84)) |
| } |
| |
| HashingTestSuite.test("_mixUInt64/GoldenValues") { |
| expectEqual(Int64(bitPattern: 0xb2b2_4f68_8dc4_164d), _mixInt64(0x0)) |
| } |
| |
| HashingTestSuite.test("_mixUInt/GoldenValues") { |
| #if arch(i386) || arch(arm) |
| expectEqual(0x11b8_82c9, _mixUInt(0x0)) |
| #elseif arch(x86_64) || arch(arm64) || arch(powerpc64) || arch(powerpc64le) || arch(s390x) |
| expectEqual(0xb2b2_4f68_8dc4_164d, _mixUInt(0x0)) |
| #else |
| fatalError("unimplemented") |
| #endif |
| } |
| |
| HashingTestSuite.test("_mixInt/GoldenValues") { |
| #if arch(i386) || arch(arm) |
| expectEqual(Int(bitPattern: 0x11b8_82c9), _mixInt(0x0)) |
| #elseif arch(x86_64) || arch(arm64) || arch(powerpc64) || arch(powerpc64le) || arch(s390x) |
| expectEqual(Int(bitPattern: 0xb2b2_4f68_8dc4_164d), _mixInt(0x0)) |
| #else |
| fatalError("unimplemented") |
| #endif |
| } |
| |
| HashingTestSuite.test("_squeezeHashValue/Int") { |
| // Check that the function can return values that cover the whole range. |
| func checkRange(_ r: Int) { |
| var results = Set<Int>() |
| for _ in 0..<(14 * r) { |
| let v = _squeezeHashValue(randInt(), r) |
| expectTrue(v < r) |
| results.insert(v) |
| } |
| expectEqual(r, results.count) |
| } |
| checkRange(1) |
| checkRange(2) |
| checkRange(4) |
| checkRange(8) |
| checkRange(16) |
| } |
| |
| HashingTestSuite.test("String/hashValue/topBitsSet") { |
| #if _runtime(_ObjC) |
| #if arch(x86_64) || arch(arm64) |
| // Make sure that we don't accidentally throw away bits by storing the result |
| // of NSString.hash into an int in the runtime. |
| |
| // This is the bit pattern that we xor to NSString's hash value. |
| let hashOffset = UInt(bitPattern: 0x429b_1266_0000_0000) |
| let hash = "efghijkl".hashValue |
| // When we are not equal to the top bit of the xor'ed hashOffset pattern |
| // there where some bits set. |
| let topHashBits = UInt(bitPattern: hash) & 0xffff_ffff_0000_0000 |
| expectTrue(hash > 0) |
| expectTrue(topHashBits != hashOffset) |
| #endif |
| #endif |
| } |
| |
| HashingTestSuite.test("overridePerExecutionHashSeed/overflow") { |
| // Test that we don't use checked arithmetic on the seed. |
| _HashingDetail.fixedSeedOverride = UInt64.max |
| expectEqual(0x4344_dc3a_239c_3e81, _mixUInt64(0xffff_ffff_ffff_ffff)) |
| _HashingDetail.fixedSeedOverride = 0 |
| } |
| |
| runAllTests() |
| |