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我尝试模拟文件创建但没有任何成功。该文件是在函数中硬创建的，没有依赖关系，只有文件名作为参数。

有没有办法从 vfs 文件系统覆盖真实的文件系统？我有一个模拟此类的解决方案File，但我更喜欢保留原始解决方案。

测试类：

class FileWorkflow
{
    public function moveAttachmentsFiles(string $filename): void
    {
        $file = new File(sys_get_temp_dir() . '/' . $filename);
        return;
    }
}

单元测试：

class FileWorkflowTest extends TestCase
{
    private FileWorkflow $fileWorkflow;
    /** @var ObjectProphecy | File */
    private ObjectProphecy $file;

    protected function setUp(): void
    {
        $this->file = $this->prophesize(File::class);
        $this->fileWorkflow = new FileWorkflow();

        $tmp = vfsStream::newDirectory('/tmp')
            ->at(vfsStream::setup('/'))
        ;
        $file = vfsStream::newFile('unit-1')
            ->at($tmp)
        ;

        // file exists in vfs filesystem
    }


    public function testMoveAttachmentsFiles(/*array $attachments*/): void
    {
        $this->file
            ->getUuid()
            ->shouldBeCalled()
            ->willReturn('unit-1', 'unit-2', 'unit-3');


        $this->fileWorkflow->moveAttachmentsFiles([$this->file->reveal()], '');

        // Error "file does not exists" because tested function code is not opening file from vfs filesystem.
    }

}
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