/** * Copyright (c) 2015-present, Facebook, Inc. * All rights reserved. * * This source code is licensed under the BSD-style license found in the * LICENSE file in the root directory of this source tree. An additional grant * of patent rights can be found in the PATENTS file in the same directory. */ #import #import #import "RCTLog.h" #import "RCTRootView.h" #define TIMEOUT_SECONDS 600 #define TEXT_TO_LOOK_FOR @"Welcome to React Native!" @interface CounterTests : XCTestCase @end @implementation CounterTests - (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)testRendersWelcomeScreen { UIViewController *vc = [[[[UIApplication sharedApplication] delegate] window] rootViewController]; NSDate *date = [NSDate dateWithTimeIntervalSinceNow:TIMEOUT_SECONDS]; BOOL foundElement = NO; __block NSString *redboxError = nil; RCTSetLogFunction(^(RCTLogLevel level, RCTLogSource source, NSString *fileName, NSNumber *lineNumber, NSString *message) { if (level >= RCTLogLevelError) { redboxError = message; } }); while ([date timeIntervalSinceNow] > 0 && !foundElement && !redboxError) { [[NSRunLoop mainRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate dateWithTimeIntervalSinceNow:0.1]]; [[NSRunLoop mainRunLoop] runMode:NSRunLoopCommonModes beforeDate:[NSDate dateWithTimeIntervalSinceNow:0.1]]; foundElement = [self findSubviewInView:vc.view matching:^BOOL(UIView *view) { if ([view.accessibilityLabel isEqualToString:TEXT_TO_LOOK_FOR]) { return YES; } return NO; }]; } RCTSetLogFunction(RCTDefaultLogFunction); XCTAssertNil(redboxError, @"RedBox error: %@", redboxError); XCTAssertTrue(foundElement, @"Couldn't find element with text '%@' in %d seconds", TEXT_TO_LOOK_FOR, TIMEOUT_SECONDS); } @end