Tools/TestWebKitAPI/Tests/WebKitLegacy/ios/WebThreadLock.mm

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#import "config.h"

#if USE(WEB_THREAD)

#import "Helpers/PlatformUtilities.h"
#import <Foundation/Foundation.h>
#import <WebCore/WebCoreThread.h>
#import <wtf/RetainPtr.h>

namespace TestWebKitAPI {

TEST(WebKitLegacy, NestedRunLoopUnderRunLoopObserverDoubleUnlock)
{
    WebThreadEnable();

    WebThreadLock();
    
    __block BOOL spunInnerRunLoop = NO;
    RetainPtr observer = adoptCF(CFRunLoopObserverCreateWithHandler(NULL, kCFRunLoopBeforeWaiting, NO, 2, ^(CFRunLoopObserverRef observer, CFRunLoopActivity activity) {
        Util::spinRunLoop(1);
        spunInnerRunLoop = YES;
    }));

    CFRunLoopAddObserver(CFRunLoopGetMain(), observer.get(), kCFRunLoopCommonModes);

    // We must use a time-based instead of count-or-condition-based spin,
    // so that we hit the above "before waiting" observer.
    CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0.1, true);
    
    EXPECT_TRUE(spunInnerRunLoop);
    
    // Spinning the runloop should have resulted in dropping the lock,
    // and *not underflowing* the lock count (which is also reported as "locked").
    EXPECT_FALSE(WebThreadIsLocked());
}

}

#endif