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nixos/doc/writing-nixos-tests: Various improvements

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Thanks to fricklerhandwerk for the many suggestions, most of which
I have fixupped into preceding commits.
This commit is contained in:
Robert Hensing 2022-07-29 11:50:12 +02:00
parent b2caf7965c
commit 6a78b41476
2 changed files with 19 additions and 18 deletions
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15
nixos/doc/manual/development/writing-nixos-tests.section.md
View File

@ -39,12 +39,10 @@ It uses two client nodes to test correct locking across server crashes.
## Calling a test {#sec-calling-nixos-tests}
Tests are invoked a bit differently depending on whether the test lives in NixOS or in another project.
Tests are invoked differently depending on whether the test is part of NixOS or lives in a different project.
### Testing within NixOS {#sec-call-nixos-test-in-nixos}
Test modules can be instantiated into derivations in multiple ways.
Tests that are part of NixOS are added to [`nixos/tests/all-tests.nix`](https://github.com/NixOS/nixpkgs/blob/master/nixos/tests/all-tests.nix).
```nix
@ -54,19 +52,22 @@ Tests that are part of NixOS are added to [`nixos/tests/all-tests.nix`](https://
Overrides can be added by defining an anonymous module in `all-tests.nix`.
```nix
hostname = runTest { imports = [ ./hostname.nix ]; defaults.networking.firewall.enable = false; };
hostname = runTest {
imports = [ ./hostname.nix ];
defaults.networking.firewall.enable = false;
};
```
You can run a test with attribute name `mytest` in `nixos/tests/all-tests.nix` by invoking:
You can run a test with attribute name `hostname` in `nixos/tests/all-tests.nix` by invoking:
```shell
cd /my/git/clone/of/nixpkgs
nix-build -A nixosTests.mytest
nix-build -A nixosTests.hostname
```
### Testing outside the NixOS project {#sec-call-nixos-test-outside-nixos}
Outside the `nixpkgs` repository, you can instantiate the test by first acquiring the NixOS library,
Outside the `nixpkgs` repository, you can instantiate the test by first importing the NixOS library,
```nix
# regular nix

22
nixos/doc/manual/from_md/development/writing-nixos-tests.section.xml
View File

@ -49,15 +49,11 @@
<section xml:id="sec-calling-nixos-tests">
<title>Calling a test</title>
<para>
Tests are invoked a bit differently depending on whether the test
lives in NixOS or in another project.
Tests are invoked differently depending on whether the test is
part of NixOS or lives in a different project.
</para>
<section xml:id="sec-call-nixos-test-in-nixos">
<title>Testing within NixOS</title>
<para>
Test modules can be instantiated into derivations in multiple
ways.
</para>
<para>
Tests that are part of NixOS are added to
<link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/nixos/tests/all-tests.nix"><literal>nixos/tests/all-tests.nix</literal></link>.
@ -70,22 +66,26 @@
<literal>all-tests.nix</literal>.
</para>
<programlisting language="bash">
hostname = runTest { imports = [ ./hostname.nix ]; defaults.networking.firewall.enable = false; };
hostname = runTest {
imports = [ ./hostname.nix ];
defaults.networking.firewall.enable = false;
};
</programlisting>
<para>
You can run a test with attribute name <literal>mytest</literal>
in <literal>nixos/tests/all-tests.nix</literal> by invoking:
You can run a test with attribute name
<literal>hostname</literal> in
<literal>nixos/tests/all-tests.nix</literal> by invoking:
</para>
<programlisting>
cd /my/git/clone/of/nixpkgs
nix-build -A nixosTests.mytest
nix-build -A nixosTests.hostname
</programlisting>
</section>
<section xml:id="sec-call-nixos-test-outside-nixos">
<title>Testing outside the NixOS project</title>
<para>
Outside the <literal>nixpkgs</literal> repository, you can
instantiate the test by first acquiring the NixOS library,
instantiate the test by first importing the NixOS library,
</para>
<programlisting language="bash">
# regular nix