ephemera

A tiny Clojure library intended to ease any testing that requires having some dummy files on disk.

It is not always feasible to mock out file system access in unit tests.

Usage

ephemera.fs provides a write-tree! function which makes it very easy to write create a temporary directory complete with file content.

Simply pass a nested map of filenames and content and write-tree! generates the whole lot returning a File instance for the root.

(use 'ephemera.fs)
;; => nil
(def root (write-tree!
             {"file-a" "This content goes in file-a"
              "subdir" {"file-b.txt" "More text\nin here\n"
                         "foo.sh" "#!/bin/bash\necho Hello World!"}}))
;; => #'user/root
root
;; => #<File /var/folders/qx/j3bsbrc56xz_63gpcg2sldzm0000gn/T/4409939888475616075>

$ ls -R /var/folders/qx/j3bsbrc56xz_63gpcg2sldzm0000gn/T/4409939888475616075
file-a	subdir

/var/folders/qx/j3bsbrc56xz_63gpcg2sldzm0000gn/T/4409939888475616075/subdir:
file-b.txt	foo.sh
$ cat /var/folders/qx/j3bsbrc56xz_63gpcg2sldzm0000gn/T/4409939888475616075/subdir/foo.sh
#!/bin/bash
echo Hello World!

Currently the file content must be a string or a nested map. If you need anything else, simply extend the ephemera.fs/FSContent protocol to the type you need.

The map is just a map.

That's it.

License

Copyright © 2015 Greg Hawkins

Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.