问检测单元测试是否在运行时在Xcode中运行的正确方法是什么？

EN

// Returns YES if we are currently being unittested.
+ (BOOL)areWeBeingUnitTested {
  BOOL answer = NO;
  Class testProbeClass;
#if GTM_USING_XCTEST // you may need to change this to reflect which framework are you using
  testProbeClass = NSClassFromString(@"XCTestProbe");
#else
  testProbeClass = NSClassFromString(@"SenTestProbe");
#endif
  if (testProbeClass != Nil) {
    // Doing this little dance so we don't actually have to link
    // SenTestingKit in
    SEL selector = NSSelectorFromString(@"isTesting");
    NSMethodSignature *sig = [testProbeClass methodSignatureForSelector:selector];
    NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:sig];
    [invocation setSelector:selector];
    [invocation invokeWithTarget:testProbeClass];
    [invocation getReturnValue:&answer];
  }
  return answer;
}

let isTesting = { () -> Bool in
    if let _ = ProcessInfo.processInfo.environment["XCTestConfigurationFilePath"] {
        return true
    } else if let testingEnv = ProcessInfo.processInfo.environment["DYLD_INSERT_LIBRARIES"] {
        return testingEnv.contains("libXCTTargetBootstrapInject.dylib")
    } else {
        return false
    }
}()

-(BOOL) isRunningUnitTests
{
    NSDictionary* environment = [ [ NSProcessInfo processInfo ] environment ];
    NSString* theTestConfigPath = environment[ @"XCTestConfigurationFilePath" ];
    return theTestConfigPath != nil;
}