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118 lines
4.0 KiB
Swift
118 lines
4.0 KiB
Swift
// RUN: %target-run-stdlib-swift
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// REQUIRES: executable_test
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import Swift
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import SwiftPrivate
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import StdlibUnittest
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var HashingTestSuite = TestSuite("Hashing")
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HashingTestSuite.test("_mixUInt32/GoldenValues") {
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expectEqual(0x11b882c9, _mixUInt32(0x0))
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expectEqual(0x60d0aafb, _mixUInt32(0x1))
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expectEqual(0x636847b5, _mixUInt32(0xffff))
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expectEqual(0x203f5350, _mixUInt32(0xffff_ffff))
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expectEqual(0xb8747ef6, _mixUInt32(0xa62301f9))
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expectEqual(0xef4eeeb2, _mixUInt32(0xfe1b46c6))
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expectEqual(0xd44c9cf1, _mixUInt32(0xe4daf7ca))
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expectEqual(0xfc1eb1de, _mixUInt32(0x33ff6f5c))
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expectEqual(0x5605f0c0, _mixUInt32(0x13c2a2b8))
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expectEqual(0xd9c48026, _mixUInt32(0xf3ad1745))
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expectEqual(0x471ab8d0, _mixUInt32(0x656eff5a))
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expectEqual(0xfe265934, _mixUInt32(0xfd2268c9))
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}
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HashingTestSuite.test("_mixInt32/GoldenValues") {
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expectEqual(Int32(bitPattern: 0x11b882c9 as UInt32), _mixInt32(0x0))
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}
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HashingTestSuite.test("_mixUInt64/GoldenValues") {
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expectEqual(0xb2b2_4f68_8dc4_164d, _mixUInt64(0x0))
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expectEqual(0x792e_33eb_0685_57de, _mixUInt64(0x1))
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expectEqual(0x9ec4_3423_1b42_3dab, _mixUInt64(0xffff))
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expectEqual(0x4cec_e9c9_01fa_9a84, _mixUInt64(0xffff_ffff))
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expectEqual(0xcba5_b650_bed5_b87c, _mixUInt64(0xffff_ffff_ffff))
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expectEqual(0xe583_5646_3fb8_ac99, _mixUInt64(0xffff_ffff_ffff_ffff))
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expectEqual(0xf5d0079f828d43a5, _mixUInt64(0x94ce7d9319f8d233))
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expectEqual(0x61900a6be9db9c3f, _mixUInt64(0x2728821e8c5b1f7))
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expectEqual(0xf2fd34b1b7d4b46e, _mixUInt64(0xe7f67ec98c64f482))
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expectEqual(0x216199ed628c821, _mixUInt64(0xd7c277b5438873ac))
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expectEqual(0xb1b486ff5f2e0e53, _mixUInt64(0x8399f1d563c42f82))
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expectEqual(0x61acc92bd91c030, _mixUInt64(0x488cefd48a2c4bfd))
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expectEqual(0xa7a52d6e4a8e3ddf, _mixUInt64(0x270a15116c351f95))
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expectEqual(0x98ceedc363c4e56a, _mixUInt64(0xe5fb9b5f6c426a84))
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}
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HashingTestSuite.test("_mixUInt64/GoldenValues") {
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expectEqual(Int64(bitPattern: 0xb2b2_4f68_8dc4_164d as UInt64), _mixInt64(0x0))
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}
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HashingTestSuite.test("_mixUInt/GoldenValues") {
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#if arch(i386) || arch(arm)
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expectEqual(0x11b8_82c9, _mixUInt(0x0))
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#elseif arch(x86_64) || arch(arm64) || arch(powerpc64) || arch(powerpc64le) || arch(s390x)
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expectEqual(0xb2b2_4f68_8dc4_164d, _mixUInt(0x0))
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#else
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fatalError("unimplemented")
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#endif
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}
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HashingTestSuite.test("_mixInt/GoldenValues") {
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#if arch(i386) || arch(arm)
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expectEqual(Int(bitPattern: 0x11b8_82c9 as UInt), _mixInt(0x0))
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#elseif arch(x86_64) || arch(arm64) || arch(powerpc64) || arch(powerpc64le) || arch(s390x)
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expectEqual(Int(bitPattern: 0xb2b2_4f68_8dc4_164d as UInt), _mixInt(0x0))
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#else
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fatalError("unimplemented")
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#endif
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}
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HashingTestSuite.test("_squeezeHashValue/Int") {
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// Check that the function can return values that cover the whole range.
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func checkRange(_ r: Int) {
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var results = Set<Int>()
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for _ in 0..<(14 * r) {
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let v = _squeezeHashValue(randInt(), r)
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expectTrue(v < r)
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results.insert(v)
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}
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expectEqual(r, results.count)
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}
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checkRange(1)
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checkRange(2)
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checkRange(4)
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checkRange(8)
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checkRange(16)
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}
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HashingTestSuite.test("String/hashValue/topBitsSet") {
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#if _runtime(_ObjC)
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#if arch(x86_64) || arch(arm64)
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// Make sure that we don't accidentally throw away bits by storing the result
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// of NSString.hash into an int in the runtime.
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// This is the bit pattern that we xor to NSString's hash value.
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let hashOffset = UInt(bitPattern: 0x429b_1266_0000_0000 as Int)
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let hash = "efghijkl".hashValue
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// When we are not equal to the top bit of the xor'ed hashOffset pattern
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// there where some bits set.
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let topHashBits = UInt(bitPattern: hash) & 0xffff_ffff_0000_0000
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expectTrue(hash > 0)
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expectTrue(topHashBits != hashOffset)
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#endif
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#endif
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}
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HashingTestSuite.test("overridePerExecutionHashSeed/overflow") {
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// Test that we don't use checked arithmetic on the seed.
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_HashingDetail.fixedSeedOverride = UInt64.max
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expectEqual(0x4344_dc3a_239c_3e81, _mixUInt64(0xffff_ffff_ffff_ffff))
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_HashingDetail.fixedSeedOverride = 0
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}
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runAllTests()
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