public function testExecute()
{
$_FILES['test_key'] = [];
$result = ['file' => '', 'url' => ''];
$resultJson = '{"file": "", "url": ""}';
$this->fileProcessor->expects($this->once())->method('saveToTmp')->with('test_key')->willReturn($result);
$this->resultFactory->expects($this->once())->method('create')->with(ResultFactory::TYPE_JSON)->willReturn($this->resultPage);
$this->resultPage->expects($this->once())->method('setData')->with($result)->willReturn($resultJson);
$this->assertEquals($resultJson, $this->controller->execute());
}
