react-native/Examples/UIExplorer/UIExplorerTests/UIExplorerTests.m

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// Copyright 2004-present Facebook. All Rights Reserved.
#import <UIKit/UIKit.h>
#import <XCTest/XCTest.h>
#define TIMEOUT_SECONDS 30
@interface UIExplorerTests : XCTestCase
@end
@implementation UIExplorerTests
- (BOOL)findSubviewInView:(UIView *)view matching:(BOOL(^)(UIView *view))test
{
if (test(view)) {
return YES;
}
for (UIView *subview in [view subviews]) {
if ([self findSubviewInView:subview matching:test]) {
return YES;
}
}
return NO;
}
- (void)testRootViewLoadsAndRenders {
UIViewController *vc = [[[[UIApplication sharedApplication] delegate] window] rootViewController];
NSDate *date = [NSDate dateWithTimeIntervalSinceNow:TIMEOUT_SECONDS];
BOOL foundElement = NO;
while ([date timeIntervalSinceNow] > 0 && !foundElement) {
[[NSRunLoop mainRunLoop] runMode:NSDefaultRunLoopMode beforeDate:date];
[[NSRunLoop mainRunLoop] runMode:NSRunLoopCommonModes beforeDate:date];
foundElement = [self findSubviewInView:vc.view matching:^BOOL(UIView *view) {
if ([view respondsToSelector:@selector(attributedText)]) {
NSString *text = [(id)view attributedText].string;
if ([text isEqualToString:@"<View>"]) {
return YES;
}
}
return NO;
}];
}
XCTAssertTrue(foundElement, @"Cound't find element with '<View>' text in %d seconds", TIMEOUT_SECONDS);
}
@end