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/*
* 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 <ui/DisplayId.h>
#include <algorithm>
#include <iterator>
#include <vector>
#include "DisplayIdGenerator.h"
namespace android {
template <typename Id>
void testGenerateId() {
DisplayIdGenerator<Id> generator;
std::vector<std::optional<Id>> ids;
std::generate_n(std::back_inserter(ids), 10, [&] { return generator.generateId(); });
// All IDs should be different.
for (auto it = ids.begin(); it != ids.end(); ++it) {
EXPECT_TRUE(*it);
for (auto dup = it + 1; dup != ids.end(); ++dup) {
EXPECT_NE(*it, *dup);
}
}
}
TEST(DisplayIdGeneratorTest, generateGpuVirtualDisplayId) {
testGenerateId<GpuVirtualDisplayId>();
}
TEST(DisplayIdGeneratorTest, generateHalVirtualDisplayId) {
testGenerateId<HalVirtualDisplayId>();
}
TEST(DisplayIdGeneratorTest, releaseId) {
constexpr size_t kMaxIdsCount = 5;
DisplayIdGenerator<GpuVirtualDisplayId> generator(kMaxIdsCount);
const auto id = generator.generateId();
EXPECT_TRUE(id);
for (size_t i = 1; i < kMaxIdsCount; i++) {
EXPECT_TRUE(generator.generateId());
}
EXPECT_FALSE(generator.generateId());
generator.releaseId(*id);
EXPECT_TRUE(generator.generateId());
}
TEST(DisplayIdGeneratorTest, maxIdsCount) {
constexpr size_t kMaxIdsCount = 5;
DisplayIdGenerator<GpuVirtualDisplayId> generator(kMaxIdsCount);
for (size_t i = 0; i < kMaxIdsCount; i++) {
EXPECT_TRUE(generator.generateId());
}
EXPECT_FALSE(generator.generateId());
}
} // namespace android
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