是否有适用于Java的虚假文件系统框架？ [英] Are there any Fake File System frameworks for Java?

问题描述

我在一个大量使用IO操作的项目中引入测试（在这种情况下是文件系统）。系统不断打开/关闭文件，检查文件是否存在，删除它们等等。

I am introducing tests in a project that makes heavy use of IO operations (the file system, in this case). The system constantly opens/closes files, checks if files exist, deletes them, etcetera.

很快就会发现常规模拟不会有太多用处，因为会使我的测试难以设置和推理。另一方面，拥有一个假的文件系统会很棒，而且我认为，设置起来非常简单。

It soon became obvious that regular mocking wouldn't be of much use, as that would make my tests hard to set up and reason about. On the other hand, having a fake file system would be awesome, and I think, pretty easy to set up.

好像红宝石的家伙再次这样做了，而且还有正是我在红宝石中要求的是： http://ozmm.org/posts/fakefs.html。

It seems the ruby guys did it again, and there's exactly what I am asking for in ruby: http://ozmm.org/posts/fakefs.html.

Java有什么远程类似的东西吗？

Is there anything remotely similar for Java?

推荐答案

Google拥有Java 7的FileSystemProvider的开源内存实现。 项目名为jimfs 。

Google has an open-source, in-memory implementation of Java 7's FileSystemProvider. The project is called jimfs.

如果使用Java 6或更早版本，还有另一种选择：我使用过 Apache Commons VFS 才取得巨大成功。它似乎很像自定义的FileSystemProvider，它提到的另一个回答者是在Java 7中。

If you use Java 6 or earlier, there is an alternative: I've used Apache Commons VFS before to great success. It seems to be much like the custom FileSystemProvider another answerer mentioned is in Java 7.

它来自预先加载了几个文件系统实现：文件，RAM，S / FTP和Jar等等。我还看过一个 S3插件。

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