/**
     * Run test execute method (delete exception)
     */
    public function testExecuteDeleteFail()
    {
        $errors = ['error' => true, 'message' => 'We can\'t delete tracking number.'];
        $this->shipmentLoad();

        $this->shipmentLoaderMock->expects($this->once())
            ->method('load')
            ->will($this->returnValue($this->shipmentMock));
        $this->shipmentTrackMock->expects($this->once())
            ->method('delete')
            ->will($this->throwException(new \Exception()));
        $this->representJson($errors);

        $this->assertNull($this->controller->executeInternal());
    }