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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "mojo/edk/system/message_in_transit_queue.h"
#include "mojo/edk/system/message_in_transit_test_utils.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace mojo {
namespace edk {
namespace {
TEST(MessageInTransitQueueTest, Basic) {
MessageInTransitQueue queue;
EXPECT_TRUE(queue.IsEmpty());
queue.AddMessage(test::MakeTestMessage(1));
ASSERT_FALSE(queue.IsEmpty());
EXPECT_EQ(1u, queue.Size());
test::VerifyTestMessage(queue.PeekMessage(), 1);
ASSERT_FALSE(queue.IsEmpty());
EXPECT_EQ(1u, queue.Size());
queue.AddMessage(test::MakeTestMessage(2));
queue.AddMessage(test::MakeTestMessage(3));
ASSERT_FALSE(queue.IsEmpty());
EXPECT_EQ(3u, queue.Size());
test::VerifyTestMessage(queue.GetMessage().get(), 1);
ASSERT_FALSE(queue.IsEmpty());
EXPECT_EQ(2u, queue.Size());
test::VerifyTestMessage(queue.PeekMessage(), 2);
ASSERT_FALSE(queue.IsEmpty());
EXPECT_EQ(2u, queue.Size());
queue.DiscardMessage();
ASSERT_FALSE(queue.IsEmpty());
EXPECT_EQ(1u, queue.Size());
test::VerifyTestMessage(queue.GetMessage().get(), 3);
EXPECT_TRUE(queue.IsEmpty());
EXPECT_EQ(0u, queue.Size());
queue.AddMessage(test::MakeTestMessage(4));
ASSERT_FALSE(queue.IsEmpty());
EXPECT_EQ(1u, queue.Size());
test::VerifyTestMessage(queue.PeekMessage(), 4);
ASSERT_FALSE(queue.IsEmpty());
EXPECT_EQ(1u, queue.Size());
queue.Clear();
EXPECT_TRUE(queue.IsEmpty());
EXPECT_EQ(0u, queue.Size());
}
TEST(MessageInTransitQueueTest, Swap) {
MessageInTransitQueue queue1;
MessageInTransitQueue queue2;
queue1.AddMessage(test::MakeTestMessage(1));
queue1.AddMessage(test::MakeTestMessage(2));
queue1.AddMessage(test::MakeTestMessage(3));
EXPECT_EQ(3u, queue1.Size());
queue2.AddMessage(test::MakeTestMessage(4));
queue2.AddMessage(test::MakeTestMessage(5));
EXPECT_EQ(2u, queue2.Size());
queue1.Swap(&queue2);
EXPECT_EQ(2u, queue1.Size());
EXPECT_EQ(3u, queue2.Size());
test::VerifyTestMessage(queue1.GetMessage().get(), 4);
test::VerifyTestMessage(queue1.GetMessage().get(), 5);
EXPECT_TRUE(queue1.IsEmpty());
queue1.Swap(&queue2);
EXPECT_TRUE(queue2.IsEmpty());
test::VerifyTestMessage(queue1.GetMessage().get(), 1);
test::VerifyTestMessage(queue1.GetMessage().get(), 2);
test::VerifyTestMessage(queue1.GetMessage().get(), 3);
EXPECT_TRUE(queue1.IsEmpty());
}
} // namespace
} // namespace edk
} // namespace mojo
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