你能告诉我问题出在哪里吗？我有一个包含以下测试的GeneratorTest.php文件:shouldReceive('put')->with('foo.txt','foobar')->once();$generator=newGenerator($fileMock);$generator->fire();}publicfunctiontestGeneratorDoesNotOverwriteFile(){$fileMock=\Mockery::mock('\stats\jway\File');$fileMock->shouldReceive('exists')->once()->and