   }
 
   func testIsFinished() {
-    operation.start()
+    operation.main()
     let peliasOperation = operation.peliasOperation as! TestPeliasOperation
     XCTAssertEqual(operation.isFinished, peliasOperation.isFinished)
     operation.waitUntilFinished()


    override func main() {
      calledMain = true
    }

    override func cancel() {

      blockExecuted = true
    }
    operation.completionBlock = block
    operation.main()
    operation.waitUntilFinished()
    XCTAssertNotNil(operation.completionBlock)
    XCTAssertNotNil(peliasOperation.completionBlock)
