Tools/TestWebKitAPI/Tests/WebKitCocoa/ProcessSuspendMediaBuffering.mm

/*
 * Copyright (C) 2019 Apple Inc. All rights reserved.
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#include "config.h"

#if WK_HAVE_C_SPI

#import "PlatformUtilities.h"
#import "TestWKWebView.h"

#import <WebKit/WKWebViewConfigurationPrivate.h>
#import <WebKit/WKWebViewPrivate.h>

TEST(WebKit, ProcessSuspendMediaBuffering)
{
    auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
    WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
    configuration.get().processPool = (WKProcessPool *)context.get();
    configuration.get()._mediaDataLoadsAutomatically = YES;
    configuration.get().mediaTypesRequiringUserActionForPlayback = WKAudiovisualMediaTypeNone;
    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);

    __block bool isPlaying = false;
    [webView performAfterReceivingMessage:@"playing" action:^() { isPlaying = true; }];

    [webView synchronouslyLoadTestPageNamed:@"video-with-audio"];

    TestWebKitAPI::Util::run(&isPlaying);

    auto isElementAllowedToBuffer = [&] {
        return [webView stringByEvaluatingJavaScript:@"window.internals.elementShouldBufferData(document.querySelector('video'))"].boolValue;
    };

    ASSERT_TRUE(isElementAllowedToBuffer());

    [webView _processWillSuspendImminentlyForTesting];

    ASSERT_FALSE(isElementAllowedToBuffer());

    [webView _processDidResumeForTesting];

    ASSERT_TRUE(isElementAllowedToBuffer());
}

#endif // WK_HAVE_C_SPI