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/*
* Copyright (C) 2015 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 "variant_map.h"
#include "gtest/gtest.h"
#define EXPECT_NULL(expected) EXPECT_EQ(reinterpret_cast<const void*>(expected), \
static_cast<void*>(nullptr));
namespace art {
namespace {
template <typename TValue>
struct FruitMapKey : VariantMapKey<TValue> {
FruitMapKey() {}
};
struct FruitMap : VariantMap<FruitMap, FruitMapKey> {
// This 'using' line is necessary to inherit the variadic constructor.
using VariantMap<FruitMap, FruitMapKey>::VariantMap;
// Make the next '4' usages of Key slightly shorter to type.
template <typename TValue>
using Key = FruitMapKey<TValue>;
static const Key<int> Apple;
static const Key<double> Orange;
static const Key<std::string> Label;
};
const FruitMap::Key<int> FruitMap::Apple;
const FruitMap::Key<double> FruitMap::Orange;
const FruitMap::Key<std::string> FruitMap::Label;
} // namespace
TEST(VariantMaps, BasicReadWrite) {
FruitMap fm;
EXPECT_NULL(fm.Get(FruitMap::Apple));
EXPECT_FALSE(fm.Exists(FruitMap::Apple));
EXPECT_NULL(fm.Get(FruitMap::Orange));
EXPECT_FALSE(fm.Exists(FruitMap::Orange));
fm.Set(FruitMap::Apple, 1);
EXPECT_NULL(fm.Get(FruitMap::Orange));
EXPECT_EQ(1, *fm.Get(FruitMap::Apple));
EXPECT_TRUE(fm.Exists(FruitMap::Apple));
fm.Set(FruitMap::Apple, 5);
EXPECT_NULL(fm.Get(FruitMap::Orange));
EXPECT_EQ(5, *fm.Get(FruitMap::Apple));
EXPECT_TRUE(fm.Exists(FruitMap::Apple));
fm.Set(FruitMap::Orange, 555.0);
EXPECT_EQ(5, *fm.Get(FruitMap::Apple));
EXPECT_DOUBLE_EQ(555.0, *fm.Get(FruitMap::Orange));
EXPECT_EQ(size_t(2), fm.Size());
// Simple remove
fm.Remove(FruitMap::Apple);
EXPECT_FALSE(fm.Exists(FruitMap::Apple));
fm.Clear();
EXPECT_EQ(size_t(0), fm.Size());
EXPECT_FALSE(fm.Exists(FruitMap::Orange));
}
TEST(VariantMaps, SetPreviousValue) {
FruitMap fm;
// Indirect remove by setting yourself again
fm.Set(FruitMap::Label, std::string("hello_world"));
auto* ptr = fm.Get(FruitMap::Label);
ASSERT_TRUE(ptr != nullptr);
*ptr = "foobar";
// Set the value to the same exact pointer which we got out of the map.
// This should cleanly 'just work' and not try to delete the value too early.
fm.Set(FruitMap::Label, *ptr);
auto* new_ptr = fm.Get(FruitMap::Label);
ASSERT_TRUE(ptr != nullptr);
EXPECT_EQ(std::string("foobar"), *new_ptr);
}
TEST(VariantMaps, RuleOfFive) {
// Test empty constructor
FruitMap fmEmpty;
EXPECT_EQ(size_t(0), fmEmpty.Size());
// Test empty constructor
FruitMap fmFilled;
fmFilled.Set(FruitMap::Apple, 1);
fmFilled.Set(FruitMap::Orange, 555.0);
EXPECT_EQ(size_t(2), fmFilled.Size());
// Test copy constructor
FruitMap fmEmptyCopy(fmEmpty);
EXPECT_EQ(size_t(0), fmEmptyCopy.Size());
// Test copy constructor
FruitMap fmFilledCopy(fmFilled);
EXPECT_EQ(size_t(2), fmFilledCopy.Size());
EXPECT_EQ(*fmFilled.Get(FruitMap::Apple), *fmFilledCopy.Get(FruitMap::Apple));
EXPECT_DOUBLE_EQ(*fmFilled.Get(FruitMap::Orange), *fmFilledCopy.Get(FruitMap::Orange));
// Test operator=
FruitMap fmFilledCopy2;
fmFilledCopy2 = fmFilled;
EXPECT_EQ(size_t(2), fmFilledCopy2.Size());
EXPECT_EQ(*fmFilled.Get(FruitMap::Apple), *fmFilledCopy2.Get(FruitMap::Apple));
EXPECT_DOUBLE_EQ(*fmFilled.Get(FruitMap::Orange), *fmFilledCopy2.Get(FruitMap::Orange));
// Test move constructor
FruitMap fmMoved(std::move(fmFilledCopy));
EXPECT_EQ(size_t(0), fmFilledCopy.Size());
EXPECT_EQ(size_t(2), fmMoved.Size());
EXPECT_EQ(*fmFilled.Get(FruitMap::Apple), *fmMoved.Get(FruitMap::Apple));
EXPECT_DOUBLE_EQ(*fmFilled.Get(FruitMap::Orange), *fmMoved.Get(FruitMap::Orange));
// Test operator= move
FruitMap fmMoved2;
fmMoved2.Set(FruitMap::Apple, 12345); // This value will be clobbered after the move
fmMoved2 = std::move(fmFilledCopy2);
EXPECT_EQ(size_t(0), fmFilledCopy2.Size());
EXPECT_EQ(size_t(2), fmMoved2.Size());
EXPECT_EQ(*fmFilled.Get(FruitMap::Apple), *fmMoved2.Get(FruitMap::Apple));
EXPECT_DOUBLE_EQ(*fmFilled.Get(FruitMap::Orange), *fmMoved2.Get(FruitMap::Orange));
}
TEST(VariantMaps, VariadicConstructors) {
// Variadic constructor, 1 kv/pair
FruitMap fmApple(FruitMap::Apple, 12345);
EXPECT_EQ(size_t(1), fmApple.Size());
EXPECT_EQ(12345, *fmApple.Get(FruitMap::Apple));
// Variadic constructor, 2 kv/pair
FruitMap fmAppleAndOrange(FruitMap::Apple, 12345,
FruitMap::Orange, 100.0);
EXPECT_EQ(size_t(2), fmAppleAndOrange.Size());
EXPECT_EQ(12345, *fmAppleAndOrange.Get(FruitMap::Apple));
EXPECT_DOUBLE_EQ(100.0, *fmAppleAndOrange.Get(FruitMap::Orange));
}
TEST(VariantMaps, ReleaseOrDefault) {
FruitMap fmAppleAndOrange(FruitMap::Apple, 12345,
FruitMap::Orange, 100.0);
int apple = fmAppleAndOrange.ReleaseOrDefault(FruitMap::Apple);
EXPECT_EQ(12345, apple);
// Releasing will also remove the Apple key.
EXPECT_EQ(size_t(1), fmAppleAndOrange.Size());
// Releasing again yields a default value.
int apple2 = fmAppleAndOrange.ReleaseOrDefault(FruitMap::Apple);
EXPECT_EQ(0, apple2);
}
TEST(VariantMaps, GetOrDefault) {
FruitMap fm(FruitMap::Apple, 12345);
// Apple gives the expected value we set.
int apple = fm.GetOrDefault(FruitMap::Apple);
EXPECT_EQ(12345, apple);
// Map is still 1.
EXPECT_EQ(size_t(1), fm.Size());
// Orange gives back a default value, since it's not in the map.
double orange = fm.GetOrDefault(FruitMap::Orange);
EXPECT_DOUBLE_EQ(0.0, orange);
}
} // namespace art
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