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1185d61648
A find or return-default utility. Rename `find_or_replace.h` to `map.h` which contains both these utilties that operate on maps. Change-Id: Iaa76ea3f5c5a1210e413c131dd0556c126ee5d0a Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/70521 Kokoro: Kokoro <noreply+kokoro@google.com> Reviewed-by: Antonio Maiorano <amaiorano@google.com> Commit-Queue: Ben Clayton <bclayton@google.com>
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
// Copyright 2021 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "src/utils/map.h"
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#include <unordered_map>
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#include "gtest/gtest.h"
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namespace tint {
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namespace utils {
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namespace {
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TEST(Lookup, Test) {
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std::unordered_map<int, int> map;
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map.emplace(10, 1);
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EXPECT_EQ(Lookup(map, 10, 0), 1); // exists, with if_missing
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EXPECT_EQ(Lookup(map, 10), 1); // exists, without if_missing
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EXPECT_EQ(Lookup(map, 20, 50), 50); // missing, with if_missing
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EXPECT_EQ(Lookup(map, 20), 0); // missing, without if_missing
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}
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TEST(GetOrCreateTest, NewKey) {
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std::unordered_map<int, int> map;
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EXPECT_EQ(GetOrCreate(map, 1, [&] { return 2; }), 2);
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EXPECT_EQ(map.size(), 1u);
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EXPECT_EQ(map[1], 2);
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}
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TEST(GetOrCreateTest, ExistingKey) {
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std::unordered_map<int, int> map;
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map[1] = 2;
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bool called = false;
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EXPECT_EQ(GetOrCreate(map, 1,
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[&] {
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called = true;
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return -2;
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}),
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2);
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EXPECT_EQ(called, false);
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EXPECT_EQ(map.size(), 1u);
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EXPECT_EQ(map[1], 2);
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}
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} // namespace
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} // namespace utils
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} // namespace tint
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