2 * Copyright (c) 2022 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include <dali-test-suite-utils.h>
19 #include <dali/devel-api/common/hash.h>
24 void utc_dali_hash_startup(void)
26 test_return_value = TET_UNDEF;
29 void utc_dali_hash_cleanup(void)
31 test_return_value = TET_PASS;
36 // To fully test the Hash distribution we need to use a tool like http://code.google.com/p/smhasher/
37 // DALi currently uses the hash for variable length strings which come from:
38 // shader vert+frag source, font family + style, image filename.
39 TestApplication application;
41 tet_infoline("UtcDaliHash");
43 const std::string testString1("highp vec4 glowColor = vec4( uGlowColor.rgb, uGlowColor.a * clampedColor.a );");
44 const std::string testString2("lowp vec4 glowColor = vec4( uGlowColor.rgb, uGlowColor.a * clampedColor.a );");
46 DALI_TEST_CHECK(Dali::CalculateHash(testString1) != Dali::CalculateHash(testString2));
47 DALI_TEST_CHECK(Dali::CalculateHash(testString1, testString2) != Dali::CalculateHash(testString2, testString1));
52 int UtcDaliHashNegative(void)
54 // negative test, check hash value == initial value
55 const std::string emptyString;
57 DALI_TEST_CHECK(Dali::CalculateHash(emptyString) != 0);
58 DALI_TEST_CHECK(Dali::CalculateHash(emptyString, emptyString) != 0);
63 int UtcDaliHashBuffer(void)
65 TestApplication application;
67 tet_infoline("UtcDaliHashBuffer");
69 const std::vector<std::uint8_t> testBuffer1 = {11, 22, 33, 0, 0};
70 const std::vector<std::uint8_t> testBuffer2 = {11, 22, 33};
71 const std::vector<std::uint8_t> testBuffer3 = {0, 0, 33, 22, 11};
72 const std::vector<std::uint8_t> testBuffer4 = {};
74 const std::string testString1 = std::string(testBuffer1.begin(), testBuffer1.end());
75 const std::string testString2 = std::string(testBuffer2.begin(), testBuffer2.end());
76 const std::string testString3 = std::string(testBuffer3.begin(), testBuffer3.end());
77 const std::string testString4 = std::string(testBuffer4.begin(), testBuffer4.end());
79 tet_printf("const char * type terminate by \\0 char. we cannot seperate two buffer only by std::string().c_str()\n");
80 DALI_TEST_CHECK(Dali::CalculateHash(testString1) == Dali::CalculateHash(testString2));
81 DALI_TEST_CHECK(Dali::CalculateHash(testString3) == Dali::CalculateHash(testString4));
83 tet_printf("To fix this limitation, we make one more API for hashing std::vector<std::uint8_t>\n");
84 DALI_TEST_CHECK(Dali::CalculateHash(testBuffer1) != Dali::CalculateHash(testBuffer2));
85 DALI_TEST_CHECK(Dali::CalculateHash(testBuffer1) != Dali::CalculateHash(testBuffer3));
86 DALI_TEST_CHECK(Dali::CalculateHash(testBuffer1) != Dali::CalculateHash(testBuffer4));
87 DALI_TEST_CHECK(Dali::CalculateHash(testBuffer2) != Dali::CalculateHash(testBuffer3));
88 DALI_TEST_CHECK(Dali::CalculateHash(testBuffer2) != Dali::CalculateHash(testBuffer4));
89 DALI_TEST_CHECK(Dali::CalculateHash(testBuffer3) != Dali::CalculateHash(testBuffer4));
94 int UtcDaliHashBuffer02(void)
96 TestApplication application;
98 tet_infoline("UtcDaliHashBuffer02");
99 tet_infoline("Same string must have same hash value. even though generated by std::string and std::vector<std::uint8_t>.");
101 const std::string testString("highp vec4 glowColor = vec4( uGlowColor.rgb, uGlowColor.a * clampedColor.a );");
102 const std::vector<std::uint8_t> testBuffer = std::vector<std::uint8_t>(testString.begin(), testString.end());
104 DALI_TEST_CHECK(Dali::CalculateHash(testString) == Dali::CalculateHash(testBuffer));
109 int UtcDaliHashBufferNegative(void)
111 // negative test, check hash value == initial value
112 const std::vector<std::uint8_t> emptyBuffer;
113 const std::vector<std::uint8_t> notEmptyBuffer1{0};
114 const std::vector<std::uint8_t> notEmptyBuffer2{0, 0};
116 // Check with zero-only buffers also did not zero.
117 DALI_TEST_CHECK(Dali::CalculateHash(emptyBuffer) != 0);
118 DALI_TEST_CHECK(Dali::CalculateHash(notEmptyBuffer1) != 0);
119 DALI_TEST_CHECK(Dali::CalculateHash(notEmptyBuffer2) != 0);
121 // Check with zero-only buffers with difference lengths have difference value each other.
122 DALI_TEST_CHECK(Dali::CalculateHash(emptyBuffer) != Dali::CalculateHash(notEmptyBuffer1));
123 DALI_TEST_CHECK(Dali::CalculateHash(emptyBuffer) != Dali::CalculateHash(notEmptyBuffer2));
124 DALI_TEST_CHECK(Dali::CalculateHash(notEmptyBuffer1) != Dali::CalculateHash(notEmptyBuffer2));