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Side by Side Diff: tests/ChecksumTest.cpp

Issue 1316233002: Style Change: NULL->nullptr (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: 2015-08-27 (Thursday) 10:25:06 EDT Created 5 years, 3 months ago
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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"
(...skipping 14 matching lines...) Expand all
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.
32 for (size_t i = 0; i < SK_ARRAY_COUNT(kAlgorithms); ++i) { 32 for (size_t i = 0; i < SK_ARRAY_COUNT(kAlgorithms); ++i) {
33 const algorithmProc algorithm = kAlgorithms[i]; 33 const algorithmProc algorithm = kAlgorithms[i];
34 34
35 // Hash of NULL is always 0. 35 // Hash of nullptr is always 0.
36 ASSERT(algorithm(NULL, 0) == 0); 36 ASSERT(algorithm(nullptr, 0) == 0);
37 37
38 const uint32_t hash = algorithm(data, kBytes); 38 const uint32_t hash = algorithm(data, kBytes);
39 // Should be deterministic. 39 // Should be deterministic.
40 ASSERT(hash == algorithm(data, kBytes)); 40 ASSERT(hash == algorithm(data, kBytes));
41 41
42 // Changing any single element should change the hash. 42 // Changing any single element should change the hash.
43 for (size_t j = 0; j < SK_ARRAY_COUNT(tweaked); ++j) { 43 for (size_t j = 0; j < SK_ARRAY_COUNT(tweaked); ++j) {
44 const uint32_t saved = tweaked[j]; 44 const uint32_t saved = tweaked[j];
45 tweaked[j] = rand.nextU(); 45 tweaked[j] = rand.nextU();
46 const uint32_t tweakedHash = algorithm(tweaked, kBytes); 46 const uint32_t tweakedHash = algorithm(tweaked, kBytes);
47 ASSERT(tweakedHash != hash); 47 ASSERT(tweakedHash != hash);
48 ASSERT(tweakedHash == algorithm(tweaked, kBytes)); 48 ASSERT(tweakedHash == algorithm(tweaked, kBytes));
49 tweaked[j] = saved; 49 tweaked[j] = saved;
50 } 50 }
51 } 51 }
52 } 52 }
53 53
54 DEF_TEST(GoodHash, r) { 54 DEF_TEST(GoodHash, r) {
55 ASSERT(SkGoodHash(( int32_t)4) == 614249093); // 4 bytes. Hits SkChecksum ::Mix fast path. 55 ASSERT(SkGoodHash(( int32_t)4) == 614249093); // 4 bytes. Hits SkChecksum ::Mix fast path.
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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