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Diffstat (limited to 'libs/ftl/Flags_test.cpp')
| -rw-r--r-- | libs/ftl/Flags_test.cpp | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/libs/ftl/Flags_test.cpp b/libs/ftl/Flags_test.cpp new file mode 100644 index 0000000000..8c00b5299b --- /dev/null +++ b/libs/ftl/Flags_test.cpp @@ -0,0 +1,227 @@ +/* + * Copyright 2020 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <gtest/gtest.h> +#include <ftl/Flags.h> + +#include <type_traits> + +namespace android::test { + +using namespace android::flag_operators; + +enum class TestFlags { ONE = 0x1, TWO = 0x2, THREE = 0x4 }; + +TEST(Flags, Test) { + Flags<TestFlags> flags = TestFlags::ONE; + ASSERT_TRUE(flags.test(TestFlags::ONE)); + ASSERT_FALSE(flags.test(TestFlags::TWO)); + ASSERT_FALSE(flags.test(TestFlags::THREE)); +} + +TEST(Flags, Any) { + Flags<TestFlags> flags = TestFlags::ONE | TestFlags::TWO; + ASSERT_TRUE(flags.any(TestFlags::ONE)); + ASSERT_TRUE(flags.any(TestFlags::TWO)); + ASSERT_FALSE(flags.any(TestFlags::THREE)); + ASSERT_TRUE(flags.any(TestFlags::ONE | TestFlags::TWO)); + ASSERT_TRUE(flags.any(TestFlags::TWO | TestFlags::THREE)); + ASSERT_TRUE(flags.any(TestFlags::ONE | TestFlags::THREE)); + ASSERT_TRUE(flags.any(TestFlags::ONE | TestFlags::TWO | TestFlags::THREE)); +} + +TEST(Flags, All) { + Flags<TestFlags> flags = TestFlags::ONE | TestFlags::TWO; + ASSERT_TRUE(flags.all(TestFlags::ONE)); + ASSERT_TRUE(flags.all(TestFlags::TWO)); + ASSERT_FALSE(flags.all(TestFlags::THREE)); + ASSERT_TRUE(flags.all(TestFlags::ONE | TestFlags::TWO)); + ASSERT_FALSE(flags.all(TestFlags::TWO | TestFlags::THREE)); + ASSERT_FALSE(flags.all(TestFlags::ONE | TestFlags::THREE)); + ASSERT_FALSE(flags.all(TestFlags::ONE | TestFlags::TWO | TestFlags::THREE)); +} + +TEST(Flags, DefaultConstructor_hasNoFlagsSet) { + Flags<TestFlags> flags; + ASSERT_FALSE(flags.any(TestFlags::ONE | TestFlags::TWO | TestFlags::THREE)); +} + +TEST(Flags, NotOperator_onEmptyFlagsSetsAllFlags) { + Flags<TestFlags> flags; + flags = ~flags; + ASSERT_TRUE(flags.all(TestFlags::ONE | TestFlags::TWO | TestFlags::THREE)); +} + +TEST(Flags, NotOperator_onNonEmptyFlagsInvertsFlags) { + Flags<TestFlags> flags = TestFlags::TWO; + flags = ~flags; + ASSERT_TRUE(flags.all(TestFlags::ONE | TestFlags::THREE)); + ASSERT_FALSE(flags.test(TestFlags::TWO)); +} + +TEST(Flags, OrOperator_withNewFlag) { + Flags<TestFlags> flags = TestFlags::ONE; + Flags<TestFlags> flags2 = flags | TestFlags::TWO; + ASSERT_FALSE(flags2.test(TestFlags::THREE)); + ASSERT_TRUE(flags2.all(TestFlags::ONE | TestFlags::TWO)); +} + +TEST(Flags, OrOperator_withExistingFlag) { + Flags<TestFlags> flags = TestFlags::ONE | TestFlags::THREE; + Flags<TestFlags> flags2 = flags | TestFlags::THREE; + ASSERT_FALSE(flags2.test(TestFlags::TWO)); + ASSERT_TRUE(flags2.all(TestFlags::ONE | TestFlags::THREE)); +} + +TEST(Flags, OrEqualsOperator_withNewFlag) { + Flags<TestFlags> flags; + flags |= TestFlags::THREE; + ASSERT_TRUE(flags.test(TestFlags::THREE)); + ASSERT_FALSE(flags.any(TestFlags::ONE | TestFlags::TWO)); +} + +TEST(Flags, OrEqualsOperator_withExistingFlag) { + Flags<TestFlags> flags = TestFlags::ONE | TestFlags::THREE; + flags |= TestFlags::THREE; + ASSERT_TRUE(flags.all(TestFlags::ONE | TestFlags::THREE)); + ASSERT_FALSE(flags.test(TestFlags::TWO)); +} + +TEST(Flags, AndOperator_withOneSetFlag) { + Flags<TestFlags> flags = TestFlags::ONE | TestFlags::THREE; + Flags<TestFlags> andFlags = flags & TestFlags::THREE; + ASSERT_TRUE(andFlags.test(TestFlags::THREE)); + ASSERT_FALSE(andFlags.any(TestFlags::ONE | TestFlags::TWO)); +} + +TEST(Flags, AndOperator_withMultipleSetFlags) { + Flags<TestFlags> flags = TestFlags::ONE | TestFlags::THREE; + Flags<TestFlags> andFlags = flags & (TestFlags::ONE | TestFlags::THREE); + ASSERT_TRUE(andFlags.all(TestFlags::ONE | TestFlags::THREE)); + ASSERT_FALSE(andFlags.test(TestFlags::TWO)); +} + +TEST(Flags, AndOperator_withNoSetFlags) { + Flags<TestFlags> flags = TestFlags::ONE | TestFlags::THREE; + Flags<TestFlags> andFlags = flags & TestFlags::TWO; + ASSERT_FALSE(andFlags.any(TestFlags::ONE | TestFlags::TWO | TestFlags::THREE)); +} + +TEST(Flags, Equality) { + Flags<TestFlags> flags1 = TestFlags::ONE | TestFlags::TWO; + Flags<TestFlags> flags2 = TestFlags::ONE | TestFlags::TWO; + ASSERT_EQ(flags1, flags2); +} + +TEST(Flags, Inequality) { + Flags<TestFlags> flags1 = TestFlags::ONE | TestFlags::TWO; + Flags<TestFlags> flags2 = TestFlags::ONE | TestFlags::THREE; + ASSERT_NE(flags1, flags2); +} + +TEST(Flags, EqualsOperator) { + Flags<TestFlags> flags; + flags = TestFlags::ONE; + ASSERT_TRUE(flags.test(TestFlags::ONE)); + ASSERT_FALSE(flags.any(TestFlags::TWO | TestFlags::THREE)); +} + +TEST(Flags, EqualsOperator_DontShareState) { + Flags<TestFlags> flags1 = TestFlags::ONE | TestFlags::TWO; + Flags<TestFlags> flags2 = flags1; + ASSERT_EQ(flags1, flags2); + + flags1 &= TestFlags::TWO; + ASSERT_NE(flags1, flags2); +} + +TEST(Flags, GetValue) { + Flags<TestFlags> flags = TestFlags::ONE | TestFlags::TWO; + ASSERT_EQ(flags.get(), 0x3); +} + +TEST(Flags, String_NoFlags) { + Flags<TestFlags> flags; + ASSERT_EQ(flags.string(), "0x0"); +} + +TEST(Flags, String_KnownValues) { + Flags<TestFlags> flags = TestFlags::ONE | TestFlags::TWO; + ASSERT_EQ(flags.string(), "ONE | TWO"); +} + +TEST(Flags, String_UnknownValues) { + auto flags = Flags<TestFlags>(0b1011); + ASSERT_EQ(flags.string(), "ONE | TWO | 0x00000008"); +} + +TEST(FlagsIterator, IteratesOverAllFlags) { + Flags<TestFlags> flags1 = TestFlags::ONE | TestFlags::TWO; + Flags<TestFlags> flags2; + for (TestFlags f : flags1) { + flags2 |= f; + } + ASSERT_EQ(flags2, flags1); +} + +TEST(FlagsIterator, IteratesInExpectedOrder) { + const std::vector<TestFlags> flagOrder = {TestFlags::ONE, TestFlags::TWO}; + Flags<TestFlags> flags; + for (TestFlags f : flagOrder) { + flags |= f; + } + + size_t idx = 0; + auto iter = flags.begin(); + while (iter != flags.end() && idx < flagOrder.size()) { + // Make sure the order is what we expect + ASSERT_EQ(*iter, flagOrder[idx]); + iter++; + idx++; + } + ASSERT_EQ(iter, flags.end()); +} +TEST(FlagsIterator, PostFixIncrement) { + Flags<TestFlags> flags = TestFlags::ONE | TestFlags::TWO; + auto iter = flags.begin(); + ASSERT_EQ(*(iter++), TestFlags::ONE); + ASSERT_EQ(*iter, TestFlags::TWO); + ASSERT_EQ(*(iter++), TestFlags::TWO); + ASSERT_EQ(iter, flags.end()); +} + +TEST(FlagsIterator, PreFixIncrement) { + Flags<TestFlags> flags = TestFlags::ONE | TestFlags::TWO; + auto iter = flags.begin(); + ASSERT_EQ(*++iter, TestFlags::TWO); + ASSERT_EQ(++iter, flags.end()); +} + +TEST(FlagNames, RuntimeFlagName) { + TestFlags f = TestFlags::ONE; + ASSERT_EQ(flag_name(f), "ONE"); +} + +TEST(FlagNames, RuntimeUnknownFlagName) { + TestFlags f = static_cast<TestFlags>(0x8); + ASSERT_EQ(flag_name(f), std::nullopt); +} + +TEST(FlagNames, CompileTimeFlagName) { + static_assert(flag_name<TestFlags::TWO>() == "TWO"); +} + +} // namespace android::test
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