   
   if !passed {
     // TODO: @auto_string expression
-    let expressionStr = "expressionStr"
-    
-    _XCTRegisterFailure(true, _XCTFailureDescription(assertionType, 0, expressionStr as NSString, expressionValueStr as NSString), message, file, line)
+    
+    _XCTRegisterFailure(true, _XCTFailureDescription(assertionType, 0, expressionValueStr as NSString), message, file, line)
   }
   
   // TODO: handle an exception for which we can get a description


/// Produce a failure description for the given assertion type.
func _XCTFailureDescription(assertionType: _XCTAssertionType, formatIndex: UInt, expressionStrings: CVarArg...) -> String {
  return String(format: _XCTFailureFormat(assertionType, formatIndex), arguments: expressionStrings)
}

// --- Supported Assertions ---

  
  if !passed {
    // TODO: @auto_string expression
    
    _XCTRegisterFailure(true, _XCTFailureDescription(assertionType, 0, expressionValueStr as NSString), message, file, line)
  }
  
  // TODO: handle an exception for which we can get a description
