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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/containers/enum_set.h"
#include <stddef.h>
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
enum class TestEnum {
TEST_1 = 1,
TEST_MIN = TEST_1,
TEST_2,
TEST_3,
TEST_4,
TEST_5,
TEST_MAX = TEST_5,
TEST_6_OUT_OF_BOUNDS
};
using TestEnumSet = EnumSet<TestEnum, TestEnum::TEST_MIN, TestEnum::TEST_MAX>;
enum class TestEnumExtreme {
TEST_0 = 0,
TEST_MIN = TEST_0,
TEST_63 = 63,
TEST_MAX = TEST_63,
TEST_64_OUT_OF_BOUNDS,
};
using TestEnumExtremeSet = EnumSet<TestEnumExtreme,
TestEnumExtreme::TEST_MIN,
TestEnumExtreme::TEST_MAX>;
class EnumSetTest : public ::testing::Test {};
TEST_F(EnumSetTest, ClassConstants) {
TestEnumSet enums;
EXPECT_EQ(TestEnum::TEST_MIN, TestEnumSet::kMinValue);
EXPECT_EQ(TestEnum::TEST_MAX, TestEnumSet::kMaxValue);
EXPECT_EQ(static_cast<size_t>(5), TestEnumSet::kValueCount);
}
// Use static_assert to check that functions we expect to be compile time
// evaluatable are really that way.
TEST_F(EnumSetTest, ConstexprsAreValid) {
static_assert(TestEnumSet::All().Has(TestEnum::TEST_2),
"expected All() to be integral constant expression");
static_assert(TestEnumSet::FromRange(TestEnum::TEST_2, TestEnum::TEST_4)
.Has(TestEnum::TEST_2),
"expected FromRange() to be integral constant expression");
static_assert(TestEnumSet(TestEnum::TEST_2).Has(TestEnum::TEST_2),
"expected TestEnumSet() to be integral constant expression");
static_assert(
TestEnumSet::FromEnumBitmask(1 << static_cast<uint64_t>(TestEnum::TEST_2))
.Has(TestEnum::TEST_2),
"Expected TestEnumSet() to be integral constant expression");
}
TEST_F(EnumSetTest, DefaultConstructor) {
const TestEnumSet enums;
EXPECT_TRUE(enums.Empty());
EXPECT_EQ(static_cast<size_t>(0), enums.Size());
EXPECT_FALSE(enums.Has(TestEnum::TEST_1));
EXPECT_FALSE(enums.Has(TestEnum::TEST_2));
EXPECT_FALSE(enums.Has(TestEnum::TEST_3));
EXPECT_FALSE(enums.Has(TestEnum::TEST_4));
EXPECT_FALSE(enums.Has(TestEnum::TEST_5));
}
TEST_F(EnumSetTest, OneArgConstructor) {
const TestEnumSet enums(TestEnum::TEST_4);
EXPECT_FALSE(enums.Empty());
EXPECT_EQ(static_cast<size_t>(1), enums.Size());
EXPECT_FALSE(enums.Has(TestEnum::TEST_1));
EXPECT_FALSE(enums.Has(TestEnum::TEST_2));
EXPECT_FALSE(enums.Has(TestEnum::TEST_3));
EXPECT_TRUE(enums.Has(TestEnum::TEST_4));
EXPECT_FALSE(enums.Has(TestEnum::TEST_5));
}
TEST_F(EnumSetTest, OneArgConstructorSize) {
TestEnumExtremeSet enums(TestEnumExtreme::TEST_0);
EXPECT_TRUE(enums.Has(TestEnumExtreme::TEST_0));
}
TEST_F(EnumSetTest, TwoArgConstructor) {
const TestEnumSet enums(TestEnum::TEST_4, TestEnum::TEST_2);
EXPECT_FALSE(enums.Empty());
EXPECT_EQ(static_cast<size_t>(2), enums.Size());
EXPECT_FALSE(enums.Has(TestEnum::TEST_1));
EXPECT_TRUE(enums.Has(TestEnum::TEST_2));
EXPECT_FALSE(enums.Has(TestEnum::TEST_3));
EXPECT_TRUE(enums.Has(TestEnum::TEST_4));
EXPECT_FALSE(enums.Has(TestEnum::TEST_5));
}
TEST_F(EnumSetTest, ThreeArgConstructor) {
const TestEnumSet enums(TestEnum::TEST_4, TestEnum::TEST_2, TestEnum::TEST_1);
EXPECT_FALSE(enums.Empty());
EXPECT_EQ(static_cast<size_t>(3), enums.Size());
EXPECT_TRUE(enums.Has(TestEnum::TEST_1));
EXPECT_TRUE(enums.Has(TestEnum::TEST_2));
EXPECT_FALSE(enums.Has(TestEnum::TEST_3));
EXPECT_TRUE(enums.Has(TestEnum::TEST_4));
EXPECT_FALSE(enums.Has(TestEnum::TEST_5));
}
TEST_F(EnumSetTest, DuplicatesInConstructor) {
EXPECT_EQ(TestEnumSet(TestEnum::TEST_4, TestEnum::TEST_2, TestEnum::TEST_1,
TestEnum::TEST_4, TestEnum::TEST_2, TestEnum::TEST_4),
TestEnumSet(TestEnum::TEST_1, TestEnum::TEST_2, TestEnum::TEST_4));
}
TEST_F(EnumSetTest, All) {
const TestEnumSet enums(TestEnumSet::All());
EXPECT_FALSE(enums.Empty());
EXPECT_EQ(static_cast<size_t>(5), enums.Size());
EXPECT_TRUE(enums.Has(TestEnum::TEST_1));
EXPECT_TRUE(enums.Has(TestEnum::TEST_2));
EXPECT_TRUE(enums.Has(TestEnum::TEST_3));
EXPECT_TRUE(enums.Has(TestEnum::TEST_4));
EXPECT_TRUE(enums.Has(TestEnum::TEST_5));
}
TEST_F(EnumSetTest, FromRange) {
EXPECT_EQ(TestEnumSet(TestEnum::TEST_2, TestEnum::TEST_3, TestEnum::TEST_4),
TestEnumSet::FromRange(TestEnum::TEST_2, TestEnum::TEST_4));
EXPECT_EQ(TestEnumSet::All(),
TestEnumSet::FromRange(TestEnum::TEST_1, TestEnum::TEST_5));
EXPECT_EQ(TestEnumSet(TestEnum::TEST_2),
TestEnumSet::FromRange(TestEnum::TEST_2, TestEnum::TEST_2));
using RestrictedRangeSet =
EnumSet<TestEnum, TestEnum::TEST_2, TestEnum::TEST_MAX>;
EXPECT_EQ(
RestrictedRangeSet(TestEnum::TEST_2, TestEnum::TEST_3, TestEnum::TEST_4),
RestrictedRangeSet::FromRange(TestEnum::TEST_2, TestEnum::TEST_4));
EXPECT_EQ(RestrictedRangeSet::All(),
RestrictedRangeSet::FromRange(TestEnum::TEST_2, TestEnum::TEST_5));
}
TEST_F(EnumSetTest, Put) {
TestEnumSet enums(TestEnum::TEST_4);
enums.Put(TestEnum::TEST_3);
EXPECT_EQ(TestEnumSet(TestEnum::TEST_3, TestEnum::TEST_4), enums);
enums.Put(TestEnum::TEST_5);
EXPECT_EQ(TestEnumSet(TestEnum::TEST_3, TestEnum::TEST_4, TestEnum::TEST_5),
enums);
}
TEST_F(EnumSetTest, PutAll) {
TestEnumSet enums(TestEnum::TEST_4, TestEnum::TEST_5);
enums.PutAll(TestEnumSet(TestEnum::TEST_3, TestEnum::TEST_4));
EXPECT_EQ(TestEnumSet(TestEnum::TEST_3, TestEnum::TEST_4, TestEnum::TEST_5),
enums);
}
TEST_F(EnumSetTest, PutRange) {
TestEnumSet enums;
enums.PutRange(TestEnum::TEST_2, TestEnum::TEST_4);
EXPECT_EQ(TestEnumSet(TestEnum::TEST_2, TestEnum::TEST_3, TestEnum::TEST_4),
enums);
}
TEST_F(EnumSetTest, RetainAll) {
TestEnumSet enums(TestEnum::TEST_4, TestEnum::TEST_5);
enums.RetainAll(TestEnumSet(TestEnum::TEST_3, TestEnum::TEST_4));
EXPECT_EQ(TestEnumSet(TestEnum::TEST_4), enums);
}
TEST_F(EnumSetTest, Remove) {
TestEnumSet enums(TestEnum::TEST_4, TestEnum::TEST_5);
enums.Remove(TestEnum::TEST_1);
enums.Remove(TestEnum::TEST_3);
EXPECT_EQ(TestEnumSet(TestEnum::TEST_4, TestEnum::TEST_5), enums);
enums.Remove(TestEnum::TEST_4);
EXPECT_EQ(TestEnumSet(TestEnum::TEST_5), enums);
enums.Remove(TestEnum::TEST_5);
enums.Remove(TestEnum::TEST_6_OUT_OF_BOUNDS);
EXPECT_TRUE(enums.Empty());
}
TEST_F(EnumSetTest, RemoveAll) {
TestEnumSet enums(TestEnum::TEST_4, TestEnum::TEST_5);
enums.RemoveAll(TestEnumSet(TestEnum::TEST_3, TestEnum::TEST_4));
EXPECT_EQ(TestEnumSet(TestEnum::TEST_5), enums);
}
TEST_F(EnumSetTest, Clear) {
TestEnumSet enums(TestEnum::TEST_4, TestEnum::TEST_5);
enums.Clear();
EXPECT_TRUE(enums.Empty());
}
TEST_F(EnumSetTest, Has) {
const TestEnumSet enums(TestEnum::TEST_4, TestEnum::TEST_5);
EXPECT_FALSE(enums.Has(TestEnum::TEST_1));
EXPECT_FALSE(enums.Has(TestEnum::TEST_2));
EXPECT_FALSE(enums.Has(TestEnum::TEST_3));
EXPECT_TRUE(enums.Has(TestEnum::TEST_4));
EXPECT_TRUE(enums.Has(TestEnum::TEST_5));
EXPECT_FALSE(enums.Has(TestEnum::TEST_6_OUT_OF_BOUNDS));
}
TEST_F(EnumSetTest, HasAll) {
const TestEnumSet enums1(TestEnum::TEST_4, TestEnum::TEST_5);
const TestEnumSet enums2(TestEnum::TEST_3, TestEnum::TEST_4);
const TestEnumSet enums3 = Union(enums1, enums2);
EXPECT_TRUE(enums1.HasAll(enums1));
EXPECT_FALSE(enums1.HasAll(enums2));
EXPECT_FALSE(enums1.HasAll(enums3));
EXPECT_FALSE(enums2.HasAll(enums1));
EXPECT_TRUE(enums2.HasAll(enums2));
EXPECT_FALSE(enums2.HasAll(enums3));
EXPECT_TRUE(enums3.HasAll(enums1));
EXPECT_TRUE(enums3.HasAll(enums2));
EXPECT_TRUE(enums3.HasAll(enums3));
}
TEST_F(EnumSetTest, Iterators) {
const TestEnumSet enums1(TestEnum::TEST_4, TestEnum::TEST_5);
TestEnumSet enums2;
for (TestEnumSet::Iterator it = enums1.begin(); it != enums1.end(); it++) {
enums2.Put(*it);
}
EXPECT_EQ(enums2, enums1);
}
TEST_F(EnumSetTest, RangeBasedForLoop) {
const TestEnumSet enums1(TestEnum::TEST_2, TestEnum::TEST_5,
TestEnum::TEST_6_OUT_OF_BOUNDS);
TestEnumSet enums2;
for (TestEnum e : enums1) {
enums2.Put(e);
}
EXPECT_EQ(enums2, enums1);
}
TEST_F(EnumSetTest, IteratorComparisonOperators) {
const TestEnumSet enums(TestEnum::TEST_2, TestEnum::TEST_4,
TestEnum::TEST_6_OUT_OF_BOUNDS);
const auto first_it = enums.begin();
const auto second_it = ++enums.begin();
// Copy for equality testing.
const auto first_it_copy = first_it;
// Sanity check, as the rest of the test relies on |first_it| and
// |first_it_copy| pointing to the same element and |first_it| and |second_it|
// pointing to different elements.
ASSERT_EQ(*first_it, *first_it_copy);
ASSERT_NE(*first_it, *second_it);
EXPECT_TRUE(first_it == first_it_copy);
EXPECT_FALSE(first_it != first_it_copy);
EXPECT_TRUE(first_it != second_it);
EXPECT_FALSE(first_it == second_it);
}
TEST_F(EnumSetTest, IteratorIncrementOperators) {
const TestEnumSet enums(TestEnum::TEST_2, TestEnum::TEST_4,
TestEnum::TEST_6_OUT_OF_BOUNDS);
const auto begin = enums.begin();
auto post_inc_it = begin;
auto pre_inc_it = begin;
auto post_inc_return_it = post_inc_it++;
auto pre_inc_return_it = ++pre_inc_it;
// |pre_inc_it| and |post_inc_it| should point to the same element.
EXPECT_EQ(pre_inc_it, post_inc_it);
EXPECT_EQ(*pre_inc_it, *post_inc_it);
// |pre_inc_it| should NOT point to the first element.
EXPECT_NE(begin, pre_inc_it);
EXPECT_NE(*begin, *pre_inc_it);
// |post_inc_it| should NOT point to the first element.
EXPECT_NE(begin, post_inc_it);
EXPECT_NE(*begin, *post_inc_it);
// Prefix increment should return new iterator.
EXPECT_EQ(pre_inc_return_it, post_inc_it);
EXPECT_EQ(*pre_inc_return_it, *post_inc_it);
// Postfix increment should return original iterator.
EXPECT_EQ(post_inc_return_it, begin);
EXPECT_EQ(*post_inc_return_it, *begin);
}
TEST_F(EnumSetTest, Union) {
const TestEnumSet enums1(TestEnum::TEST_4, TestEnum::TEST_5);
const TestEnumSet enums2(TestEnum::TEST_3, TestEnum::TEST_4);
const TestEnumSet enums3 = Union(enums1, enums2);
EXPECT_EQ(TestEnumSet(TestEnum::TEST_3, TestEnum::TEST_4, TestEnum::TEST_5),
enums3);
}
TEST_F(EnumSetTest, Intersection) {
const TestEnumSet enums1(TestEnum::TEST_4, TestEnum::TEST_5);
const TestEnumSet enums2(TestEnum::TEST_3, TestEnum::TEST_4);
const TestEnumSet enums3 = Intersection(enums1, enums2);
EXPECT_EQ(TestEnumSet(TestEnum::TEST_4), enums3);
}
TEST_F(EnumSetTest, Difference) {
const TestEnumSet enums1(TestEnum::TEST_4, TestEnum::TEST_5);
const TestEnumSet enums2(TestEnum::TEST_3, TestEnum::TEST_4);
const TestEnumSet enums3 = Difference(enums1, enums2);
EXPECT_EQ(TestEnumSet(TestEnum::TEST_5), enums3);
}
TEST_F(EnumSetTest, ToFromEnumBitmask) {
const TestEnumSet empty;
EXPECT_EQ(empty.ToEnumBitmask(), 0ULL);
EXPECT_EQ(TestEnumSet::FromEnumBitmask(0), empty);
const TestEnumSet enums1(TestEnum::TEST_2);
const uint64_t val1 = 1ULL << static_cast<uint64_t>(TestEnum::TEST_2);
EXPECT_EQ(enums1.ToEnumBitmask(), val1);
EXPECT_EQ(TestEnumSet::FromEnumBitmask(val1), enums1);
const TestEnumSet enums2(TestEnum::TEST_3, TestEnum::TEST_4);
const uint64_t val2 = 1ULL << static_cast<uint64_t>(TestEnum::TEST_3) |
1ULL << static_cast<uint64_t>(TestEnum::TEST_4);
EXPECT_EQ(enums2.ToEnumBitmask(), val2);
EXPECT_EQ(TestEnumSet::FromEnumBitmask(val2), enums2);
}
TEST_F(EnumSetTest, ToFromEnumBitmaskExtreme) {
const TestEnumExtremeSet empty;
EXPECT_EQ(empty.ToEnumBitmask(), 0ULL);
EXPECT_EQ(TestEnumExtremeSet::FromEnumBitmask(0ULL), empty);
const TestEnumExtremeSet enums1(TestEnumExtreme::TEST_63);
const uint64_t val1 = 1ULL << static_cast<uint64_t>(TestEnumExtreme::TEST_63);
EXPECT_EQ(enums1.ToEnumBitmask(), val1);
EXPECT_EQ(TestEnumExtremeSet::FromEnumBitmask(val1), enums1);
}
} // namespace
} // namespace base
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