| // RUN: %target-run-stdlib-swift |
| // REQUIRES: executable_test |
| |
| import StdlibUnittest |
| |
| let SipHashTests = TestSuite("SipHashTests") |
| |
| extension Hasher { |
| typealias HashValue = Int |
| } |
| |
| struct SipHashTest { |
| let input: [UInt8] |
| let seed: (UInt64, UInt64) |
| let output: UInt64 |
| |
| /// Test vector from the reference C implementation. |
| /// |
| /// SipHash output with |
| /// |
| /// seed = 00 01 02 ... |
| /// |
| /// and |
| /// |
| /// input = (empty string) |
| /// input = 00 (1 byte) |
| /// input = 00 01 (2 bytes) |
| /// input = 00 01 02 (3 bytes) |
| /// ... |
| /// input = 00 01 02 ... 3e (63 bytes) |
| init(referenceVectorIndex i: Int, output: UInt64) { |
| self.input = Array(0..<UInt8(i)) |
| self.seed = (0x07060504_03020100, 0x0F0E0D0C_0B0A0908) |
| self.output = output |
| } |
| |
| init(input: [UInt8], seed: (UInt64, UInt64), output: UInt64) { |
| self.input = input |
| self.seed = seed |
| self.output = output |
| } |
| } |
| |
| let sipHash13Tests: [SipHashTest] = [ |
| SipHashTest(referenceVectorIndex: 0, output: 0xabac0158050fc4dc), |
| SipHashTest(referenceVectorIndex: 1, output: 0xc9f49bf37d57ca93), |
| SipHashTest(referenceVectorIndex: 2, output: 0x82cb9b024dc7d44d), |
| SipHashTest(referenceVectorIndex: 3, output: 0x8bf80ab8e7ddf7fb), |
| SipHashTest(referenceVectorIndex: 4, output: 0xcf75576088d38328), |
| SipHashTest(referenceVectorIndex: 5, output: 0xdef9d52f49533b67), |
| SipHashTest(referenceVectorIndex: 6, output: 0xc50d2b50c59f22a7), |
| SipHashTest(referenceVectorIndex: 7, output: 0xd3927d989bb11140), |
| SipHashTest(referenceVectorIndex: 8, output: 0x369095118d299a8e), |
| SipHashTest(referenceVectorIndex: 9, output: 0x25a48eb36c063de4), |
| SipHashTest(referenceVectorIndex: 10, output: 0x79de85ee92ff097f), |
| SipHashTest(referenceVectorIndex: 11, output: 0x70c118c1f94dc352), |
| SipHashTest(referenceVectorIndex: 12, output: 0x78a384b157b4d9a2), |
| SipHashTest(referenceVectorIndex: 13, output: 0x306f760c1229ffa7), |
| SipHashTest(referenceVectorIndex: 14, output: 0x605aa111c0f95d34), |
| SipHashTest(referenceVectorIndex: 15, output: 0xd320d86d2a519956), |
| SipHashTest(referenceVectorIndex: 16, output: 0xcc4fdd1a7d908b66), |
| SipHashTest(referenceVectorIndex: 17, output: 0x9cf2689063dbd80c), |
| SipHashTest(referenceVectorIndex: 18, output: 0x8ffc389cb473e63e), |
| SipHashTest(referenceVectorIndex: 19, output: 0xf21f9de58d297d1c), |
| SipHashTest(referenceVectorIndex: 20, output: 0xc0dc2f46a6cce040), |
| SipHashTest(referenceVectorIndex: 21, output: 0xb992abfe2b45f844), |
| SipHashTest(referenceVectorIndex: 22, output: 0x7ffe7b9ba320872e), |
| SipHashTest(referenceVectorIndex: 23, output: 0x525a0e7fdae6c123), |
| SipHashTest(referenceVectorIndex: 24, output: 0xf464aeb267349c8c), |
| SipHashTest(referenceVectorIndex: 25, output: 0x45cd5928705b0979), |
| SipHashTest(referenceVectorIndex: 26, output: 0x3a3e35e3ca9913a5), |
| SipHashTest(referenceVectorIndex: 27, output: 0xa91dc74e4ade3b35), |
| SipHashTest(referenceVectorIndex: 28, output: 0xfb0bed02ef6cd00d), |
| SipHashTest(referenceVectorIndex: 29, output: 0x88d93cb44ab1e1f4), |
| SipHashTest(referenceVectorIndex: 30, output: 0x540f11d643c5e663), |
| SipHashTest(referenceVectorIndex: 31, output: 0x2370dd1f8c21d1bc), |
| SipHashTest(referenceVectorIndex: 32, output: 0x81157b6c16a7b60d), |
| SipHashTest(referenceVectorIndex: 33, output: 0x4d54b9e57a8ff9bf), |
| SipHashTest(referenceVectorIndex: 34, output: 0x759f12781f2a753e), |
| SipHashTest(referenceVectorIndex: 35, output: 0xcea1a3bebf186b91), |
| SipHashTest(referenceVectorIndex: 36, output: 0x2cf508d3ada26206), |
| SipHashTest(referenceVectorIndex: 37, output: 0xb6101c2da3c33057), |
| SipHashTest(referenceVectorIndex: 38, output: 0xb3f47496ae3a36a1), |
| SipHashTest(referenceVectorIndex: 39, output: 0x626b57547b108392), |
| SipHashTest(referenceVectorIndex: 40, output: 0xc1d2363299e41531), |
| SipHashTest(referenceVectorIndex: 41, output: 0x667cc1923f1ad944), |
| SipHashTest(referenceVectorIndex: 42, output: 0x65704ffec8138825), |
| SipHashTest(referenceVectorIndex: 43, output: 0x24f280d1c28949a6), |
| SipHashTest(referenceVectorIndex: 44, output: 0xc2ca1cedfaf8876b), |
| SipHashTest(referenceVectorIndex: 45, output: 0xc2164bfc9f042196), |
| SipHashTest(referenceVectorIndex: 46, output: 0xa16e9c9368b1d623), |
| SipHashTest(referenceVectorIndex: 47, output: 0x49fb169c8b5114fd), |
| SipHashTest(referenceVectorIndex: 48, output: 0x9f3143f8df074c46), |
| SipHashTest(referenceVectorIndex: 49, output: 0xc6fdaf2412cc86b3), |
| SipHashTest(referenceVectorIndex: 50, output: 0x7eaf49d10a52098f), |
| SipHashTest(referenceVectorIndex: 51, output: 0x1cf313559d292f9a), |
| SipHashTest(referenceVectorIndex: 52, output: 0xc44a30dda2f41f12), |
| SipHashTest(referenceVectorIndex: 53, output: 0x36fae98943a71ed0), |
| SipHashTest(referenceVectorIndex: 54, output: 0x318fb34c73f0bce6), |
| SipHashTest(referenceVectorIndex: 55, output: 0xa27abf3670a7e980), |
| SipHashTest(referenceVectorIndex: 56, output: 0xb4bcc0db243c6d75), |
| SipHashTest(referenceVectorIndex: 57, output: 0x23f8d852fdb71513), |
| SipHashTest(referenceVectorIndex: 58, output: 0x8f035f4da67d8a08), |
| SipHashTest(referenceVectorIndex: 59, output: 0xd89cd0e5b7e8f148), |
| SipHashTest(referenceVectorIndex: 60, output: 0xf6f4e6bcf7a644ee), |
| SipHashTest(referenceVectorIndex: 61, output: 0xaec59ad80f1837f2), |
| SipHashTest(referenceVectorIndex: 62, output: 0xc3b2f6154b6694e0), |
| SipHashTest(referenceVectorIndex: 63, output: 0x9d199062b7bbb3a8), |
| |
| SipHashTest( |
| input: [ |
| 0x72, 0xdc, 0xde, 0xd4, 0x6d, 0xb4, 0xc8, 0xa1, |
| 0xcf, 0x22, 0xe2, 0x7f, 0xe3, 0xf6, 0xe5, 0x6d, |
| 0x8b, 0x66, 0x0b, 0xaf, 0xba, 0x16, 0x25, 0xf3, |
| 0x63, 0x8e, 0x69, 0x80, 0xf3, 0x7e, 0xd6, 0xe3, |
| ], |
| seed: (0xa3432fc680796c34, 0x1173946a79aeaae5), |
| output: 0x4d457d818f46941d), |
| ] |
| |
| let incrementalPatterns: [[Int]] = [ |
| [1], [2], [3], [4], [5], [6], [7], [8], [9], |
| [15], [16], [17], |
| [31], [32], [33], |
| [0, 1], |
| [1, 2], |
| [1, 3, 5], |
| [1, 7], |
| [1, 9], |
| [7, 9], |
| ] |
| |
| struct Loop<C: Collection>: Sequence, IteratorProtocol { |
| var base: C |
| var iterator: C.Iterator |
| |
| init(_ base: C) { |
| self.base = base |
| self.iterator = base.makeIterator() |
| } |
| |
| mutating func next() -> C.Element? { |
| if let element = iterator.next() { |
| return element |
| } |
| iterator = base.makeIterator() |
| return iterator.next() |
| } |
| } |
| |
| SipHashTests.test("Hasher/combine(UnsafeRawBufferPointer)") |
| .forEach(in: sipHash13Tests) { test in |
| var hasher = Hasher(_rawSeed: test.seed) |
| test.input.withUnsafeBytes { hasher.combine(bytes: $0) } |
| let hash = hasher.finalize() |
| expectEqual(Hasher.HashValue(truncatingIfNeeded: test.output), hash) |
| } |
| |
| SipHashTests.test("Hasher/combine(UnsafeRawBufferPointer)/pattern") |
| .forEach(in: cartesianProduct(sipHash13Tests, incrementalPatterns)) { test_ in |
| let (test, pattern) = test_ |
| |
| var hasher = Hasher(_rawSeed: test.seed) |
| var chunkSizes = Loop(pattern).makeIterator() |
| var startIndex = 0 |
| while startIndex != test.input.endIndex { |
| let chunkSize = min( |
| chunkSizes.next()!, |
| test.input.endIndex - startIndex) |
| let slice = test.input[startIndex..<(startIndex+chunkSize)] |
| slice.withUnsafeBytes { hasher.combine(bytes: $0) } |
| startIndex += chunkSize |
| } |
| let hash = hasher.finalize() |
| expectEqual(Hasher.HashValue(truncatingIfNeeded: test.output), hash) |
| } |
| |
| |
| func testIntegerType<I: FixedWidthInteger>( |
| _ type: I.Type, |
| combiner: @escaping (inout Hasher, I) -> Void) { |
| SipHashTests.test("Hasher._combine(\(type.self))") |
| .forEach(in: sipHash13Tests) { test in |
| |
| var hasher = Hasher(_rawSeed: test.seed) |
| |
| // Load little-endian chunks and combine them into the hasher. |
| let bitWidth = I.bitWidth |
| var i = 0 |
| var count = 0 |
| var chunk: I = 0 |
| while i < test.input.count { |
| chunk |= I(test.input[i]) << (8 * count) |
| i += 1 |
| count += 1 |
| if 8 * count == bitWidth { |
| combiner(&hasher, chunk) |
| count = 0 |
| chunk = 0 |
| } |
| } |
| // Combine tail bytes. |
| if count > 0 { |
| hasher._combine(bytes: UInt64(truncatingIfNeeded: chunk), count: count) |
| } |
| |
| let hash = hasher.finalize() |
| expectEqual(Hasher.HashValue(truncatingIfNeeded: test.output), hash) |
| } |
| } |
| |
| testIntegerType(UInt.self) { $0._combine($1) } |
| testIntegerType(UInt64.self) { $0._combine($1) } |
| testIntegerType(UInt32.self) { $0._combine($1) } |
| testIntegerType(UInt16.self) { $0._combine($1) } |
| testIntegerType(UInt8.self) { $0._combine($1) } |
| |
| SipHashTests.test("Hasher/OperationsAfterFinalize") { |
| // Verify that finalize is nonmutating. |
| var hasher1 = Hasher(_rawSeed: (0, 0)) |
| hasher1._combine(1 as UInt8) |
| _ = hasher1.finalize() |
| // Hasher is now consumed. The operations below are illegal, but this isn't |
| // currently enforced. Check that the behavior matches that of a nonmutating |
| // function. |
| hasher1._combine(2 as UInt16) |
| let hash1a = hasher1.finalize() |
| let hash1b = hasher1.finalize() |
| expectEqual(hash1a, hash1b) |
| |
| var hasher2 = Hasher(_rawSeed: (0, 0)) |
| hasher2._combine(1 as UInt8) |
| hasher2._combine(2 as UInt16) |
| let hash2 = hasher2.finalize() |
| expectEqual(hash1a, hash2) |
| } |
| |
| runAllTests() |