44 lines
1.3 KiB
XML
44 lines
1.3 KiB
XML
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-running-nixos-tests">
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<title>Running Tests interactively</title>
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<para>The test itself can be run interactively. This is
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particularly useful when developing or debugging a test:
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<screen>
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$ nix-build nixos/tests/login.nix -A driver
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$ ./result/bin/nixos-test-driver
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starting VDE switch for network 1
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>
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</screen>
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You can then take any Perl statement, e.g.
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<screen>
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> startAll
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> testScript
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> $machine->succeed("touch /tmp/foo")
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</screen>
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The function <command>testScript</command> executes the entire test
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script and drops you back into the test driver command line upon its
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completion. This allows you to inspect the state of the VMs after the
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test (e.g. to debug the test script).</para>
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<para>To just start and experiment with the VMs, run:
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<screen>
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$ nix-build nixos/tests/login.nix -A driver
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$ ./result/bin/nixos-run-vms
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</screen>
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The script <command>nixos-run-vms</command> starts the virtual
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machines defined by test. The root file system of the VMs is created
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on the fly and kept across VM restarts in
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<filename>./</filename><varname>hostname</varname><filename>.qcow2</filename>.</para>
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</section>
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