realm-js/examples/ReactExample/ReactExampleTests/ReactExampleTests.m

/* Copyright 2015 Realm Inc - All Rights Reserved
 * Proprietary and Confidential
 */

#import <UIKit/UIKit.h>
#import <XCTest/XCTest.h>

#import "RCTLog.h"
#import "RCTRootView.h"

#define TIMEOUT_SECONDS 10
#define TEXT_TO_LOOK_FOR @"Todo Items"

@interface ReactExampleTests : XCTestCase

@end

@implementation ReactExampleTests

- (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)testLaunched
{
    UIViewController *vc = [[[[UIApplication sharedApplication] delegate] window] rootViewController];
    NSDate *date = [NSDate dateWithTimeIntervalSinceNow:TIMEOUT_SECONDS];
    BOOL foundElement = NO;

    __block NSString *redboxError = nil;
    RCTSetLogFunction(^(RCTLogLevel level, 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