Tools/TestWebKitAPI/Tests/WTF/CrossThreadCopier.cpp

/*
 * Copyright (C) 2019 Sony Interactive Entertainment Inc.
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 * 1. Redistributions of source code must retain the above copyright
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 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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#include "config.h"
#include <wtf/CrossThreadCopier.h>

#include "Test.h"
#include <wtf/text/WTFString.h>

namespace TestWebKitAPI {

TEST(WTF_CrossThreadCopier, CopyLVString)
{
    String original { "1234" };
    auto copy = crossThreadCopy(original);
    EXPECT_TRUE(original.impl()->hasOneRef());
    EXPECT_TRUE(copy.impl()->hasOneRef());
    EXPECT_FALSE(original.impl() == copy.impl());
}

TEST(WTF_CrossThreadCopier, MoveRVString)
{
    String original { "1234" };
    auto copy = crossThreadCopy(WTFMove(original));
    EXPECT_TRUE(copy.impl()->hasOneRef());
    EXPECT_NULL(original.impl());
}

TEST(WTF_CrossThreadCopier, CopyRVStringHavingTwoRef)
{
    String original { "1234" };
    String original2 { original };
    auto copy = crossThreadCopy(WTFMove(original));
    EXPECT_EQ(original.impl()->refCount(), 2u);
    EXPECT_FALSE(original.impl() == copy.impl());
    EXPECT_TRUE(copy.impl()->hasOneRef());
}

TEST(WTF_CrossThreadCopier, CopyLVOptionalString)
{
    std::optional<String> original { "1234" };
    auto copy = crossThreadCopy(original);
    EXPECT_TRUE(original->impl()->hasOneRef());
    EXPECT_TRUE(copy->impl()->hasOneRef());
    EXPECT_FALSE(original->impl() == copy->impl());
}

TEST(WTF_CrossThreadCopier, MoveRVOptionalString)
{
    std::optional<String> original { "1234" };
    auto copy = crossThreadCopy(WTFMove(original));
    EXPECT_TRUE(copy->impl()->hasOneRef());
    EXPECT_NULL(original->impl());
}

TEST(WTF_CrossThreadCopier, CopyRVOptionalStringHavingTwoRef)
{
    String string { "1234" };
    std::optional<String> original { string };
    auto copy = crossThreadCopy(original);
    EXPECT_EQ(original->impl()->refCount(), 2u);
    EXPECT_FALSE(original->impl() == copy->impl());
    EXPECT_TRUE(copy->impl()->hasOneRef());
}

} // namespace TestWebKitAPI