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| 1 /* | 1 /* |
| 2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #include "SkChecksum.h" | 8 #include "SkChecksum.h" |
| 9 #include "SkRandom.h" | 9 #include "SkRandom.h" |
| 10 #include "Test.h" | 10 #include "Test.h" |
| 11 | 11 |
| 12 | 12 |
| 13 // Murmur3 has an optional third seed argument, so we wrap it to fit a uniform t
ype. | 13 // Murmur3 has an optional third seed argument, so we wrap it to fit a uniform t
ype. |
| 14 static uint32_t murmur_noseed(const uint32_t* d, size_t l) { return SkChecksum::
Murmur3(d, l); } | 14 static uint32_t murmur_noseed(const uint32_t* d, size_t l) { return SkChecksum::
Murmur3(d, l); } |
| 15 | 15 |
| 16 #define ASSERT(x) REPORTER_ASSERT(r, x) | 16 #define ASSERT(x) REPORTER_ASSERT(r, x) |
| 17 | 17 |
| 18 DEF_TEST(Checksum, r) { | 18 DEF_TEST(Checksum, r) { |
| 19 // Algorithms to test. They're currently all uint32_t(const uint32_t*, size
_t). | 19 // Algorithms to test. They're currently all uint32_t(const uint32_t*, size
_t). |
| 20 typedef uint32_t(*algorithmProc)(const uint32_t*, size_t); | 20 typedef uint32_t(*algorithmProc)(const uint32_t*, size_t); |
| 21 const algorithmProc kAlgorithms[] = { &SkChecksum::Compute, &murmur_noseed }
; | 21 const algorithmProc kAlgorithms[] = { &murmur_noseed }; |
| 22 | 22 |
| 23 // Put 128 random bytes into two identical buffers. Any multiple of 4 will
do. | 23 // Put 128 random bytes into two identical buffers. Any multiple of 4 will
do. |
| 24 const size_t kBytes = SkAlign4(128); | 24 const size_t kBytes = SkAlign4(128); |
| 25 SkRandom rand; | 25 SkRandom rand; |
| 26 uint32_t data[kBytes/4], tweaked[kBytes/4]; | 26 uint32_t data[kBytes/4], tweaked[kBytes/4]; |
| 27 for (size_t i = 0; i < SK_ARRAY_COUNT(tweaked); ++i) { | 27 for (size_t i = 0; i < SK_ARRAY_COUNT(tweaked); ++i) { |
| 28 data[i] = tweaked[i] = rand.nextU(); | 28 data[i] = tweaked[i] = rand.nextU(); |
| 29 } | 29 } |
| 30 | 30 |
| 31 // Test each algorithm. | 31 // Test each algorithm. |
| (...skipping 24 matching lines...) Expand all Loading... |
| 56 ASSERT(SkGoodHash()((uint32_t)4) == 614249093); // (Ditto) | 56 ASSERT(SkGoodHash()((uint32_t)4) == 614249093); // (Ditto) |
| 57 | 57 |
| 58 // None of these are 4 byte sized, so they use SkChecksum::Murmur3, not SkCh
ecksum::Mix. | 58 // None of these are 4 byte sized, so they use SkChecksum::Murmur3, not SkCh
ecksum::Mix. |
| 59 ASSERT(SkGoodHash()((uint64_t)4) == 3491892518); | 59 ASSERT(SkGoodHash()((uint64_t)4) == 3491892518); |
| 60 ASSERT(SkGoodHash()((uint16_t)4) == 899251846); | 60 ASSERT(SkGoodHash()((uint16_t)4) == 899251846); |
| 61 ASSERT(SkGoodHash()( (uint8_t)4) == 962700458); | 61 ASSERT(SkGoodHash()( (uint8_t)4) == 962700458); |
| 62 | 62 |
| 63 // Tests SkString is correctly specialized. | 63 // Tests SkString is correctly specialized. |
| 64 ASSERT(SkGoodHash()(SkString("Hi")) == 55667557); | 64 ASSERT(SkGoodHash()(SkString("Hi")) == 55667557); |
| 65 } | 65 } |
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