Tools/TestWebKitAPI/Tests/WebKit/FirstVisuallyNonEmptyMilestoneWithDeferredScript.mm

/*
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#import "config.h"

#import "PlatformUtilities.h"
#import "TestNavigationDelegate.h"
#import <wtf/RetainPtr.h>

static bool didFirstVisuallyNonEmptyLayout;
static bool receivedMessage;

@interface FirstPaintMessageHandler : NSObject <WKScriptMessageHandler>
@end

@implementation FirstPaintMessageHandler
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message
{
    receivedMessage = true;
}
@end

@interface RenderingProgressNavigationDelegate : NSObject <WKNavigationDelegate>
@end

@implementation RenderingProgressNavigationDelegate
- (void)_webView:(WKWebView *)webView renderingProgressDidChange:(_WKRenderingProgressEvents)progressEvents
{
    if (progressEvents & _WKRenderingProgressEventFirstVisuallyNonEmptyLayout)
        didFirstVisuallyNonEmptyLayout = true;
}
@end

TEST(WebKit, FirstVisuallyNonEmptyMilestoneWithDeferredScript)
{
    auto webViewConfiguration = adoptNS([[WKWebViewConfiguration alloc] init]);
    auto messageHandler = adoptNS([[FirstPaintMessageHandler alloc] init]);
    [[webViewConfiguration userContentController] addScriptMessageHandler:messageHandler.get() name:@"firstpaint"];

    auto webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600) configuration:webViewConfiguration.get()]);

    RetainPtr<RenderingProgressNavigationDelegate> delegate = adoptNS([[RenderingProgressNavigationDelegate alloc] init]);
    [webView setNavigationDelegate:delegate.get()];

    receivedMessage = false;
    didFirstVisuallyNonEmptyLayout = false;

    [webView loadRequest:[NSURLRequest requestWithURL:[[NSBundle mainBundle] URLForResource:@"deferred-script-load" withExtension:@"html" subdirectory:@"TestWebKitAPI.resources"]]];

    TestWebKitAPI::Util::run(&receivedMessage);
    EXPECT_TRUE(didFirstVisuallyNonEmptyLayout);
}