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nixos/manual: Add docs on extra python packages in tests

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tljuniper 2022-05-23 13:56:18 +02:00
parent 8858bf009e
commit 2a750c3026
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22
nixos/doc/manual/development/writing-nixos-tests.section.md
View file

@ -380,3 +380,25 @@ with foo_running:
def foo_running():
machine.succeed("pgrep -x foo")
```
## Adding Python packages to the test script {#ssec-python-packages-in-test-script}
When additional Python libraries are required in the test script, they can be
added using the parameter `extraPythonPackages`. For example, you could add
`numpy` like this:
```nix
import ./make-test-python.nix
{
extraPythonPackages = p: [ p.numpy ];
nodes = { };
testScript = ''
import numpy as np
assert str(np.zeros(4) == "array([0., 0., 0., 0.])")
'';
}
```
In that case, `numpy` is chosen from the generic `python3Packages`.

26
nixos/doc/manual/from_md/development/writing-nixos-tests.section.xml
View file

@ -652,4 +652,30 @@ def foo_running():
```
</programlisting>
</section>
<section xml:id="ssec-python-packages-in-test-script">
<title>Adding Python packages to the test script</title>
<para>
When additional Python libraries are required in the test script,
they can be added using the parameter
<literal>extraPythonPackages</literal>. For example, you could add
<literal>numpy</literal> like this:
</para>
<programlisting language="bash">
import ./make-test-python.nix
{
extraPythonPackages = p: [ p.numpy ];
nodes = { };
testScript = ''
import numpy as np
assert str(np.zeros(4) == &quot;array([0., 0., 0., 0.])&quot;)
'';
}
</programlisting>
<para>
In that case, <literal>numpy</literal> is chosen from the generic
<literal>python3Packages</literal>.
</para>
</section>
</section>