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contributing: add section about tests

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Robert Helgesson 2020-02-26 22:09:59 +01:00
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CONTRIBUTING.md
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@ -156,6 +156,35 @@ If you do have a change worthy of a news entry then please add one in
should be added. If you contribute a module then you don't need to
add this entry, the merger will create an entry for you.
### Tests ###
Home Manager includes a basic test suite and it is highly recommended
to include at least one test when adding a module. Tests are typically
in the form of "golden tests" where, for example, a generated
configuration file is compared to a known correct file.
It is relatively easy to create tests by modeling the existing tests,
found in the `tests` project directory.
The full Home Manager test suite can be run by executing
```console
$ nix-shell --pure tests -A run.all
```
in the project root. List all test cases through
```console
$ nix-shell --pure tests -A list
```
and run an individual test, for example `alacritty-empty-settings`,
through
```console
$ nix-shell --pure tests -A run.alacritty-empty-settings
```
[open issues]: https://github.com/rycee/home-manager/issues
[new issue]: https://github.com/rycee/home-manager/issues/new
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