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// Copyright 2021 The Tint Authors.
//
// 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 "src/tint/utils/map.h"
#include <unordered_map>
#include "gtest/gtest.h"
namespace tint::utils {
namespace {
TEST(Lookup, Test) {
std::unordered_map<int, int> map;
map.emplace(10, 1);
EXPECT_EQ(Lookup(map, 10, 0), 1); // exists, with if_missing
EXPECT_EQ(Lookup(map, 10), 1); // exists, without if_missing
EXPECT_EQ(Lookup(map, 20, 50), 50); // missing, with if_missing
EXPECT_EQ(Lookup(map, 20), 0); // missing, without if_missing
}
TEST(GetOrCreateTest, NewKey) {
std::unordered_map<int, int> map;
EXPECT_EQ(GetOrCreate(map, 1, [&] { return 2; }), 2);
EXPECT_EQ(map.size(), 1u);
EXPECT_EQ(map[1], 2);
}
TEST(GetOrCreateTest, ExistingKey) {
std::unordered_map<int, int> map;
map[1] = 2;
bool called = false;
EXPECT_EQ(GetOrCreate(map, 1,
[&] {
called = true;
return -2;
}),
2);
EXPECT_EQ(called, false);
EXPECT_EQ(map.size(), 1u);
EXPECT_EQ(map[1], 2);
}
} // namespace
} // namespace tint::utils