/*
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 * modification, are permitted provided that the following conditions are
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 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"

#include "web/FrameLoaderClientImpl.h"

#include "core/loader/FrameLoader.h"
#include "platform/weborigin/KURL.h"
#include "public/web/WebFrameClient.h"
#include "public/web/WebSettings.h"
#include "public/web/WebView.h"
#include "web/WebLocalFrameImpl.h"
#include "web/tests/FrameTestHelpers.h"
#include "wtf/text/CString.h"
#include "wtf/text/WTFString.h"

#include <gtest/gtest.h>

using namespace blink;

namespace {

class TestWebFrameClient : public WebFrameClient {
public:
    WebString userAgentOverride(WebLocalFrame* frame, const WebURL& url) OVERRIDE
    {
        if (m_userAgentOverride.isEmpty())
            return WebString();

        return m_userAgentOverride;
    }

    void setUserAgentOverride(const WebString& userAgent)
    {
        m_userAgentOverride = userAgent;
    }

private:
    WebString m_userAgentOverride;
};

class FrameLoaderClientImplTest : public testing::Test {
public:
    void SetUp()
    {
        FrameTestHelpers::TestWebViewClient webViewClient;
        m_webView = WebView::create(&webViewClient);
        // FIXME: http://crbug.com/363843. This needs to find a better way to
        // not create graphics layers.
        m_webView->settings()->setAcceleratedCompositingEnabled(false);
        m_mainFrame = WebLocalFrame::create(&m_webFrameClient);
        m_webView->setMainFrame(m_mainFrame);
        m_frameLoaderClientImpl = toFrameLoaderClientImpl(toWebLocalFrameImpl(m_webView->mainFrame())->frame()->loader().client());
    }

    void TearDown()
    {
        m_webView->close();
        m_mainFrame->close();
    }

    void setUserAgentOverride(const WebString& userAgent)
    {
        return m_webFrameClient.setUserAgentOverride(userAgent);
    }

    const WebString userAgent()
    {
        // The test always returns the same user agent, regardless of the URL passed in.
        blink::KURL dummyURL(blink::ParsedURLString, "about:blank");
        WTF::CString userAgent = m_frameLoaderClientImpl->userAgent(dummyURL).utf8();
        return WebString::fromUTF8(userAgent.data(), userAgent.length());
    }

protected:
    TestWebFrameClient m_webFrameClient;
    FrameLoaderClientImpl* m_frameLoaderClientImpl;
    WebView* m_webView;
    WebFrame* m_mainFrame;
};

TEST_F(FrameLoaderClientImplTest, UserAgentOverride)
{
    const WebString defaultUserAgent = userAgent();
    const WebString override = WebString::fromUTF8("dummy override");

    // Override the user agent and make sure we get it back.
    setUserAgentOverride(override);
    EXPECT_TRUE(override.equals(userAgent()));

    // Remove the override and make sure we get the original back.
    setUserAgentOverride(WebString());
    EXPECT_TRUE(defaultUserAgent.equals(userAgent()));
}

} // namespace
