// Copyright 2019 The SwiftShader Authors. All Rights Reserved.
//
// 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 "Yarn_test.hpp"

#include "Yarn/WaitGroup.hpp"

TEST(WithoutBoundScheduler, WaitGroupDone)
{
    yarn::WaitGroup wg(2); // Should not require a scheduler.
    wg.done();
    wg.done();
}

#if YARN_DEBUG_ENABLED
TEST(WithoutBoundScheduler, WaitGroupDoneTooMany)
{
    yarn::WaitGroup wg(2); // Should not require a scheduler.
    wg.done();
    wg.done();
    EXPECT_DEATH(wg.done(), "done\\(\\) called too many times");
}
#endif // YARN_DEBUG_ENABLED

TEST_P(WithBoundScheduler, WaitGroup_OneTask)
{
    yarn::WaitGroup wg(1);
    std::atomic<int> counter = {0};
    yarn::schedule([&counter, wg] {
        counter++;
        wg.done();
    });
    wg.wait();
    ASSERT_EQ(counter.load(), 1);
}

TEST_P(WithBoundScheduler, WaitGroup_10Tasks)
{
    yarn::WaitGroup wg(10);
    std::atomic<int> counter = {0};
    for (int i = 0; i < 10; i++)
    {
        yarn::schedule([&counter, wg] {
            counter++;
            wg.done();
        });
    }
    wg.wait();
    ASSERT_EQ(counter.load(), 10);
}