DetectAppTests.m
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#import <UIKit/UIKit.h>
#import <XCTest/XCTest.h>
#import <React/RCTLog.h>
#import <React/RCTRootView.h>
#define TIMEOUT_SECONDS 600
#define TEXT_TO_LOOK_FOR @"Welcome to React"
@interface DetectAppTests : XCTestCase
@end
@implementation DetectAppTests
- (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 = [[[RCTSharedApplication() delegate] window] rootViewController];
NSDate *date = [NSDate dateWithTimeIntervalSinceNow:TIMEOUT_SECONDS];
BOOL foundElement = NO;
__block NSString *redboxError = nil;
#ifdef DEBUG
RCTSetLogFunction(
^(RCTLogLevel level, RCTLogSource source, NSString *fileName, NSNumber *lineNumber, NSString *message) {
if (level >= RCTLogLevelError) {
redboxError = message;
}
});
#endif
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;
}];
}
#ifdef DEBUG
RCTSetLogFunction(RCTDefaultLogFunction);
#endif
XCTAssertNil(redboxError, @"RedBox error: %@", redboxError);
XCTAssertTrue(foundElement, @"Couldn't find element with text '%@' in %d seconds", TEXT_TO_LOOK_FOR, TIMEOUT_SECONDS);
}
@end