| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "mojo/services/media/common/cpp/linear_function.h" | |
| 6 #include "services/media/common/test/test_base.h" | |
| 7 | |
| 8 namespace mojo { | |
| 9 namespace media { | |
| 10 namespace { | |
| 11 | |
| 12 class LinearFunctionTest : public TestBase { | |
| 13 public: | |
| 14 // Verifies that a LinearFunction instantiated in three different ways with | |
| 15 // the given arguments has the expected properties. | |
| 16 void VerifyBasics(int64_t domain_basis, | |
| 17 int64_t range_basis, | |
| 18 uint32_t domain_delta, | |
| 19 uint32_t range_delta) { | |
| 20 LinearFunction under_test_1(domain_basis, range_basis, domain_delta, | |
| 21 range_delta); | |
| 22 VerifyBasics(under_test_1, domain_basis, range_basis, domain_delta, | |
| 23 range_delta); | |
| 24 | |
| 25 LinearFunction under_test_2(domain_basis, range_basis, | |
| 26 Ratio(range_delta, domain_delta)); | |
| 27 VerifyBasics(under_test_2, domain_basis, range_basis, domain_delta, | |
| 28 range_delta); | |
| 29 | |
| 30 LinearFunction under_test_3(Ratio(range_delta, domain_delta)); | |
| 31 VerifyBasics(under_test_3, 0, 0, domain_delta, range_delta); | |
| 32 | |
| 33 EXPECT_EQ(under_test_1, under_test_1); | |
| 34 EXPECT_EQ(under_test_1, under_test_2); | |
| 35 EXPECT_EQ(under_test_2, under_test_1); | |
| 36 EXPECT_EQ(under_test_2, under_test_2); | |
| 37 | |
| 38 if (domain_basis == 0 && range_basis == 0) { | |
| 39 EXPECT_EQ(under_test_1, under_test_3); | |
| 40 EXPECT_EQ(under_test_2, under_test_3); | |
| 41 EXPECT_EQ(under_test_3, under_test_1); | |
| 42 EXPECT_EQ(under_test_3, under_test_2); | |
| 43 } else { | |
| 44 EXPECT_NE(under_test_1, under_test_3); | |
| 45 EXPECT_NE(under_test_2, under_test_3); | |
| 46 EXPECT_NE(under_test_3, under_test_1); | |
| 47 EXPECT_NE(under_test_3, under_test_2); | |
| 48 } | |
| 49 } | |
| 50 | |
| 51 // Verifies that the given LinearFunction instantiated with the given | |
| 52 // arguments has the expected properties. | |
| 53 void VerifyBasics(const LinearFunction& under_test, | |
| 54 int64_t domain_basis, | |
| 55 int64_t range_basis, | |
| 56 uint32_t domain_delta, | |
| 57 uint32_t range_delta) { | |
| 58 Ratio::Reduce(&range_delta, &domain_delta); | |
| 59 EXPECT_EQ(domain_basis, under_test.domain_basis()); | |
| 60 EXPECT_EQ(range_basis, under_test.range_basis()); | |
| 61 EXPECT_EQ(domain_delta, under_test.domain_delta()); | |
| 62 EXPECT_EQ(range_delta, under_test.range_delta()); | |
| 63 EXPECT_EQ(domain_delta, under_test.slope().denominator()); | |
| 64 EXPECT_EQ(range_delta, under_test.slope().numerator()); | |
| 65 } | |
| 66 | |
| 67 // Verifies that the inverse of a LinearFunction instantiated in three | |
| 68 // different ways with the given arguments has the expected properties. | |
| 69 void VerifyInverse(int64_t domain_basis, | |
| 70 int64_t range_basis, | |
| 71 uint32_t domain_delta, | |
| 72 uint32_t range_delta) { | |
| 73 LinearFunction under_test_1(domain_basis, range_basis, domain_delta, | |
| 74 range_delta); | |
| 75 VerifyBasics(under_test_1.Inverse(), range_basis, domain_basis, range_delta, | |
| 76 domain_delta); | |
| 77 | |
| 78 LinearFunction under_test_2(domain_basis, range_basis, | |
| 79 Ratio(range_delta, domain_delta)); | |
| 80 VerifyBasics(under_test_2.Inverse(), range_basis, domain_basis, range_delta, | |
| 81 domain_delta); | |
| 82 | |
| 83 LinearFunction under_test_3(Ratio(range_delta, domain_delta)); | |
| 84 VerifyBasics(under_test_3.Inverse(), 0, 0, range_delta, domain_delta); | |
| 85 } | |
| 86 | |
| 87 // Verifies that LinearFunction::Apply, in its various forms, works as | |
| 88 // expected for the given arguments. | |
| 89 void VerifyApply(int64_t domain_basis, | |
| 90 int64_t range_basis, | |
| 91 uint32_t domain_delta, | |
| 92 uint32_t range_delta, | |
| 93 int64_t domain_input, | |
| 94 int64_t expected_result) { | |
| 95 // Verify the static method. | |
| 96 EXPECT_EQ( | |
| 97 expected_result, | |
| 98 LinearFunction::Apply(domain_basis, range_basis, | |
| 99 Ratio(range_delta, domain_delta), domain_input)); | |
| 100 | |
| 101 // Verify the instance method. | |
| 102 LinearFunction under_test(domain_basis, range_basis, domain_delta, | |
| 103 range_delta); | |
| 104 EXPECT_EQ(expected_result, under_test.Apply(domain_input)); | |
| 105 | |
| 106 // Verify the operator. | |
| 107 EXPECT_EQ(expected_result, under_test(domain_input)); | |
| 108 } | |
| 109 | |
| 110 // Verifies that LinearFunction::ApplyInverse, in its various forms, works as | |
| 111 // expected for the given arguments. | |
| 112 void VerifyApplyInverse(int64_t domain_basis, | |
| 113 int64_t range_basis, | |
| 114 uint32_t domain_delta, | |
| 115 uint32_t range_delta, | |
| 116 int64_t range_input, | |
| 117 int64_t expected_result) { | |
| 118 // Verify the static method. | |
| 119 EXPECT_EQ(expected_result, | |
| 120 LinearFunction::ApplyInverse(domain_basis, range_basis, | |
| 121 Ratio(range_delta, domain_delta), | |
| 122 range_input)); | |
| 123 | |
| 124 // Verify the instance method. | |
| 125 LinearFunction under_test(domain_basis, range_basis, domain_delta, | |
| 126 range_delta); | |
| 127 EXPECT_EQ(expected_result, under_test.ApplyInverse(range_input)); | |
| 128 } | |
| 129 | |
| 130 // Verifies that LinearFunction::Compose works as expected with the given | |
| 131 // inputs. | |
| 132 void VerifyCompose(const LinearFunction& a, | |
| 133 const LinearFunction& b, | |
| 134 bool exact, | |
| 135 const LinearFunction& expected_result) { | |
| 136 // Verify the static method. | |
| 137 EXPECT_EQ(expected_result, LinearFunction::Compose(a, b, exact)); | |
| 138 } | |
| 139 }; | |
| 140 | |
| 141 // Tests LinearFunction basics for various instantiation arguments. | |
| 142 TEST_F(LinearFunctionTest, Basics) { | |
| 143 VerifyBasics(0, 0, 1, 0); | |
| 144 VerifyBasics(0, 0, 1, 1); | |
| 145 VerifyBasics(1, 1, 10, 10); | |
| 146 VerifyBasics(1234, 5678, 4321, 8765); | |
| 147 VerifyBasics(-1234, 5678, 4321, 8765); | |
| 148 VerifyBasics(-1234, -5678, 4321, 8765); | |
| 149 VerifyBasics(1234, -5678, 4321, 8765); | |
| 150 } | |
| 151 | |
| 152 // Tests LinearFunction::Inverse. | |
| 153 TEST_F(LinearFunctionTest, Inverse) { | |
| 154 VerifyInverse(0, 0, 1, 1); | |
| 155 VerifyInverse(1, 1, 10, 10); | |
| 156 VerifyInverse(1234, 5678, 4321, 8765); | |
| 157 VerifyInverse(-1234, 5678, 4321, 8765); | |
| 158 VerifyInverse(-1234, -5678, 4321, 8765); | |
| 159 VerifyInverse(1234, -5678, 4321, 8765); | |
| 160 } | |
| 161 | |
| 162 // Tests LinearFunction::Apply in its variations. | |
| 163 TEST_F(LinearFunctionTest, Apply) { | |
| 164 VerifyApply(0, 0, 1, 0, 0, 0); | |
| 165 VerifyApply(0, 0, 1, 0, 1000, 0); | |
| 166 VerifyApply(0, 1234, 1, 0, 0, 1234); | |
| 167 VerifyApply(0, 1234, 1, 0, 1000, 1234); | |
| 168 VerifyApply(0, 1234, 1, 0, -1000, 1234); | |
| 169 VerifyApply(0, -1234, 1, 0, 0, -1234); | |
| 170 VerifyApply(0, -1234, 1, 0, 1000, -1234); | |
| 171 VerifyApply(0, -1234, 1, 0, -1000, -1234); | |
| 172 VerifyApply(0, 0, 1, 1, 0, 0); | |
| 173 VerifyApply(0, 0, 1, 1, 1000, 1000); | |
| 174 VerifyApply(0, 1234, 1, 1, 0, 1234); | |
| 175 VerifyApply(0, 1234, 1, 1, 1000, 2234); | |
| 176 VerifyApply(0, 1234, 1, 1, -1000, 234); | |
| 177 VerifyApply(0, -1234, 1, 1, 0, -1234); | |
| 178 VerifyApply(0, -1234, 1, 1, 1000, -234); | |
| 179 VerifyApply(0, -1234, 1, 1, -1000, -2234); | |
| 180 VerifyApply(10, 0, 1, 0, 0, 0); | |
| 181 VerifyApply(10, 0, 1, 1, 0, -10); | |
| 182 VerifyApply(-10, 0, 1, 0, 0, 0); | |
| 183 VerifyApply(-10, 0, 1, 1, 0, 10); | |
| 184 VerifyApply(0, 1234, 2, 1, 0, 1234); | |
| 185 VerifyApply(0, 1234, 2, 1, 1234, 1234 + 1234 / 2); | |
| 186 VerifyApply(0, 1234, 1, 2, 1234, 1234 + 1234 * 2); | |
| 187 } | |
| 188 | |
| 189 // Tests LinearFunction::Apply in its variations. | |
| 190 TEST_F(LinearFunctionTest, ApplyInverse) { | |
| 191 VerifyApplyInverse(0, 0, 1, 1, 0, 0); | |
| 192 VerifyApplyInverse(0, 0, 1, 1, 1000, 1000); | |
| 193 VerifyApplyInverse(0, 1234, 1, 1, 1234, 0); | |
| 194 VerifyApplyInverse(0, 1234, 1, 1, 2234, 1000); | |
| 195 VerifyApplyInverse(0, 1234, 1, 1, 234, -1000); | |
| 196 VerifyApplyInverse(0, -1234, 1, 1, -1234, 0); | |
| 197 VerifyApplyInverse(0, -1234, 1, 1, -234, 1000); | |
| 198 VerifyApplyInverse(0, -1234, 1, 1, -2234, -1000); | |
| 199 VerifyApplyInverse(10, 0, 1, 1, -10, 0); | |
| 200 VerifyApplyInverse(-10, 0, 1, 1, 10, 0); | |
| 201 VerifyApplyInverse(0, 1234, 2, 1, 1234, 0); | |
| 202 VerifyApplyInverse(0, 1234, 2, 1, 1234 + 1234 / 2, 1234); | |
| 203 VerifyApplyInverse(0, 1234, 1, 2, 1234 + 1234 * 2, 1234); | |
| 204 } | |
| 205 | |
| 206 // Tests LinearFunction::Compose. | |
| 207 TEST_F(LinearFunctionTest, Compose) { | |
| 208 VerifyCompose(LinearFunction(0, 0, 1, 0), LinearFunction(0, 0, 1, 0), true, | |
| 209 LinearFunction(0, 0, 1, 0)); | |
| 210 VerifyCompose(LinearFunction(0, 0, 1, 1), LinearFunction(0, 0, 1, 1), true, | |
| 211 LinearFunction(0, 0, 1, 1)); | |
| 212 VerifyCompose(LinearFunction(1, 0, 1, 1), LinearFunction(0, 0, 1, 1), true, | |
| 213 LinearFunction(0, -1, 1, 1)); | |
| 214 VerifyCompose(LinearFunction(10, 10, 1, 1), LinearFunction(0, 0, 1, 1), true, | |
| 215 LinearFunction(0, 0, 1, 1)); | |
| 216 VerifyCompose(LinearFunction(0, 0, 1, 2), LinearFunction(0, 0, 1, 2), true, | |
| 217 LinearFunction(0, 0, 1, 4)); | |
| 218 VerifyCompose(LinearFunction(0, 0, 2, 1), LinearFunction(0, 0, 2, 1), true, | |
| 219 LinearFunction(0, 0, 4, 1)); | |
| 220 VerifyCompose(LinearFunction(0, 0, 2, 1), LinearFunction(0, 0, 1, 2), true, | |
| 221 LinearFunction(0, 0, 1, 1)); | |
| 222 } | |
| 223 | |
| 224 } // namespace | |
| 225 } // namespace media | |
| 226 } // namespace mojo | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1952673003:
Motown: Rename Ratio and LinearFunction classes (Closed)
Base URL: https://github.com/domokit/mojo.git@master