Tools/TestWebKitAPI/Tests/WebKitCocoa/PreferredAudioBufferSize.mm

/*
 * Copyright (C) 2018 Apple Inc. All rights reserved.
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#include "config.h"

#if WK_HAVE_C_SPI

#import "PlatformUtilities.h"
#import "Test.h"
#import "TestWKWebView.h"
#import "WebCoreTestSupport.h"
#import <JavaScriptCore/JSContext.h>
#import <WebKit/WKPreferencesPrivate.h>
#import <WebKit/WKUIDelegatePrivate.h>
#import <WebKit/_WKFullscreenDelegate.h>
#import <wtf/RetainPtr.h>

class PreferredAudioBufferSize : public testing::Test {
public:
    void SetUp() override
    {
        configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
        WKRetainPtr<WKContextRef> context = adoptWK(TestWebKitAPI::Util::createContextForInjectedBundleTest("InternalsInjectedBundleTest"));
        configuration.get().processPool = (WKProcessPool *)context.get();
        configuration.get().preferences._lowPowerVideoAudioBufferSizeEnabled = YES;
    }

    void createView()
    {
        webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 300, 300) configuration:configuration.get() addToWindow:YES]);
    }

    double preferredAudioBufferSize() const
    {
        return [webView stringByEvaluatingJavaScript:@"window.internals.preferredAudioBufferSize()"].doubleValue;
    }

    void runPlayingTestWithPageNamed(NSString* name, double expectedAudioBufferSize)
    {
        createView();
        __block bool isPlaying = false;
        [webView performAfterReceivingMessage:@"playing" action:^() { isPlaying = true; }];
        [webView synchronouslyLoadTestPageNamed:name];
        TestWebKitAPI::Util::run(&isPlaying);
        EXPECT_EQ(expectedAudioBufferSize, preferredAudioBufferSize());
    }

    RetainPtr<WKWebViewConfiguration> configuration;
    RetainPtr<TestWKWebView> webView;
    bool isPlaying { false };
};

TEST_F(PreferredAudioBufferSize, Empty)
{
    createView();
    [webView synchronouslyLoadHTMLString:@""];
    EXPECT_EQ(512, preferredAudioBufferSize());
}

TEST_F(PreferredAudioBufferSize, AudioElement)
{
    runPlayingTestWithPageNamed(@"audio-only", 4096);
}

TEST_F(PreferredAudioBufferSize, WebAudio)
{
    runPlayingTestWithPageNamed(@"web-audio-only", 128);
}

TEST_F(PreferredAudioBufferSize, VideoOnly)
{
    runPlayingTestWithPageNamed(@"video-without-audio", 512);
}

TEST_F(PreferredAudioBufferSize, VideoWithAudio)
{
    runPlayingTestWithPageNamed(@"video-with-audio", 4096);
}

TEST_F(PreferredAudioBufferSize, AudioWithWebAudio)
{
    runPlayingTestWithPageNamed(@"audio-with-web-audio", 128);
}

TEST_F(PreferredAudioBufferSize, VideoWithAudioAndWebAudio)
{
    runPlayingTestWithPageNamed(@"video-with-audio-and-web-audio", 128);
}

#endif // WK_HAVE_C_SPI