Question

我正在制作一个“每个步骤之前”的步骤，我想要执行注销步骤。在尝试触摸它之前，我找不到关于检查元素是否存在的任何内容，如果它不存在则执行其他操作。是否可以使用KIF执行此操作而无需引用我想要检查的对象？

类似的东西：

if([tester elementExistsWithAccesibilityLabel:@"backButton"])
{
    [tester tapViewWithAccessibilityLabel:@"backButton"];
}
else
{
    [tester tapViewwithAccesibilityLabel:@"Logout"];
}

Answer 1

我建议尝试这种方法：

if([[[UIApplication sharedApplication] keyWindow] accessibilityElementWithLabel:@"backButton"] != nil) {
     [tester tapViewWithAccessibilityLabel:@"backButton"];
} else {
     [tester tapViewWithAccessibilityLabel:@"Logout"];
}

Answer 2

这些方法可以解决问题。将它们添加到KIFUITestActor的类别中。

#import "UIApplication-KIFAdditions.h" 
#import "UIAccessibilityElement-KIFAdditions.h"
#import "NSError-KIFAdditions.h"

- (BOOL)existsViewWithAccessibilityLabel:(NSString *)label
{
    UIView *view = nil;
    UIAccessibilityElement *element = nil;
    return [self existsAccessibilityElement:&element view:&view withLabel:label value:nil traits:UIAccessibilityTraitNone tappable:YES];
}

- (BOOL)existsAccessibilityElement:(UIAccessibilityElement **)element view:(out UIView **)view withLabel:(NSString *)label value:(NSString *)value traits:(UIAccessibilityTraits)traits tappable:(BOOL)mustBeTappable
{
    KIFTestStepResult (^executionBlock)(NSError **) = ^(NSError **error) {
        return [UIAccessibilityElement accessibilityElement:element view:view withLabel:label value:value traits:traits tappable:mustBeTappable error:error] ? KIFTestStepResultSuccess : KIFTestStepResultWait;
    };

    NSDate *startDate = [NSDate date];
    KIFTestStepResult result;
    NSError *error = nil;
    NSTimeInterval timeout = 10.0;

    while ((result = executionBlock(&error)) == KIFTestStepResultWait && -[startDate timeIntervalSinceNow] < timeout) {
        CFRunLoopRunInMode([[UIApplication sharedApplication] currentRunLoopMode] ?: kCFRunLoopDefaultMode, 0.1, false);
    }

    if (result == KIFTestStepResultWait) {
        error = [NSError KIFErrorWithUnderlyingError:error format:@"The step timed out after %.2f seconds: %@", timeout, error.localizedDescription];
        result = KIFTestStepResultFailure;
    }

    return (result == KIFTestStepResultSuccess) ? YES : NO;
}

它非常适合我。

Answer 3

如果有人还在寻找答案，那么KIF中有一系列方法就是KIFUITestActor-ConditionalTests.h：

- (BOOL)tryFindingViewWithAccessibilityLabel:(NSString *)label error:(out NSError **)error;

- (BOOL)tryFindingViewWithAccessibilityLabel:(NSString *)label traits:(UIAccessibilityTraits)traits error:(out NSError **)error;

- (BOOL)tryFindingViewWithAccessibilityLabel:(NSString *)label value:(NSString *)value traits:(UIAccessibilityTraits)traits error:(out NSError **)error;

- (BOOL)tryFindingTappableViewWithAccessibilityLabel:(NSString *)label error:(out NSError **)error;

- (BOOL)tryFindingTappableViewWithAccessibilityLabel:(NSString *)label traits:(UIAccessibilityTraits)traits error:(out NSError **)error;

- (BOOL)tryFindingTappableViewWithAccessibilityLabel:(NSString *)label value:(NSString *)value traits:(UIAccessibilityTraits)traits error:(out NSError **)error;

- (BOOL)tryFindingAccessibilityElement:(out UIAccessibilityElement **)element view:(out UIView **)view withIdentifier:(NSString *)identifier tappable:(BOOL)mustBeTappable error:(out NSError **)error;

- (BOOL)tryFindingAccessibilityElement:(out UIAccessibilityElement **)element view:(out UIView **)view withElementMatchingPredicate:(NSPredicate *)predicate tappable:(BOOL)mustBeTappable error:(out NSError **)error;

如果您正在使用辅助功能标识符添加（pod 'KIF/IdentifierTests'），那么还有一个非常方便的等效方法： - (BOOL) tryFindingViewWithAccessibilityIdentifier:(NSString *) accessibilityIdentifier;

Answer 4

对于swift 3：

a.butter.com

Answer 5

您可以尝试这样的事情：

@try {
   if([tester waitForViewWithAccessibilityLabel:@"backButton"])
   {
      [tester tapViewWithAccessibilityLabel:@"backButton"];
   }
@catch (NSException *exception )
{
   [tester tapViewwithAccesibilityLabel:@"Logout"];
}
@finally 
{
   NSLOG(@"User logged out.");
}

Answer 6

我做了这个功能似乎在捏了一把，但如果多个集成测试同时依赖于全局默认超时，它会有一些问题。到目前为止，似乎对我有用。

static CGFloat CPKIFDefaultTimeout = 2

- (BOOL)elementExistsWithAccessibilityLabel:(NSString *)accessibilityLabel {
    [KIFTestActor setDefaultTimeout:0.0];
    BOOL result = [tester waitForViewWithAccessibilityLabel:accessibilityLabel] ? YES : NO;
    [KIFTestActor CPKIFDefaultTimeout];
    return result;
}

Answer 7

好吧，这些都不适合我......但是我有一个解决方案

结帐this gist.

我所做的就是采用KIF的代码并删除了他们的错误检查 - 对我而言就像是一种魅力。

当找不到元素时，这不会使测试失败！

Answer 8

如果使用Swift，您可以简单地使用viewTester().tryFindingView()：

if viewTester().usingLabel("backButton").tryFindingView() {
    // back button exists
    viewTester().usingLabel("backButton").tap()
} else {
    // back button does not exist
    viewTester().usingLabel("Logout").tap()
}

我可以通过KIF检查屏幕上是否存在视图吗？

8 个答案: