Tools/TestWebKitAPI/Tests/WebKit/FirstMeaningfulPaintMilestone.cpp

/*
 * Copyright (C) 2018 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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#include "config.h"

#if WK_HAVE_C_SPI

#include "PlatformUtilities.h"
#include "PlatformWebView.h"
#include <WebKit/WKContextPrivate.h>

namespace TestWebKitAPI {

static bool didUnlockFistMeaningfulPaintMilestone = false;

static void didReachMilestone(WKPageRef, WKPageRenderingProgressEvents type, WKTypeRef, const void *)
{
    if (type & kWKDidFirstMeaningfulPaint)
        didUnlockFistMeaningfulPaintMilestone = true;
}

static void setPageLoaderClient(WKPageRef page)
{
    WKPageNavigationClientV3 loaderClient;
    memset(&loaderClient, 0, sizeof(loaderClient));

    loaderClient.base.version = 3;
    loaderClient.renderingProgressDidChange = didReachMilestone;

    WKPageSetPageNavigationClient(page, &loaderClient.base);
}

TEST(WebKit, FirstMeaningfulPaint)
{
    WKRetainPtr<WKContextRef> context = adoptWK(Util::createContextForInjectedBundleTest("FirstMeaningfulPaintMilestoneTest"));

    PlatformWebView webView(context.get());
    setPageLoaderClient(webView.page());

    WKPageLoadURL(webView.page(), adoptWK(Util::createURLForResource("lots-of-text", "html")).get());

    Util::run(&didUnlockFistMeaningfulPaintMilestone);
    EXPECT_TRUE(didUnlockFistMeaningfulPaintMilestone);
}

} // namespace TestWebKitAPI

#endif