title: unit test case for a asynchronous method ios
body: <p>i am new in the ios line. I have a task to crete test case for this method.</p>
  
  <pre><code>+ (void)myMethod:(NSString *)paramA callback:(void(^)(NSString *result, BOOL success))callback;
  // ... Some code that runs async (for example, something that fetches data from the internet)...
  
  // Call the callback function in a background thread
  dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
      callback(@"Success", YES);
  });
  }
  </code></pre>
  
  <p>As through rnd i get to kno something related to <code>XCTestExpectation</code> used to create unit test cases....</p>