mikey179/vfsstream

composer http://packagist.p2hp.com/packages/mikey179/vfsstream
githubhttps://github.com/bovigo/vfsStream
phpunit 文档阐明 - 测试对文件系统进行模仿https://phpunit.readthedocs.io/zh_CN/latest/test-doubles.html?highlight=vfsStream#test-doubles-mocking-the-filesystem

单元测试中常常应用，是虚构文件系统的流笼罩。用来在单测中mock file system，防止对文件系统的间接操作