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docs/HACKING: Update kola ext test instructions

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Kelvin Fan 2021-01-22 14:00:45 -05:00 committed by OpenShift Merge Robot
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@ -47,9 +47,9 @@ dependencies.
You can use `make check` in a container to run the unit tests. However,
if you want to test the daemon in a useful way, you'll need virtualization.
rpm-ostree has some tests that use the [coreos-assembler/kola framework](https://github.com/coreos/coreos-assembler/blob/94602e26678fd1a8fa3bda37b3b1d980967be2d6/mantle/kola/README-kola-ext.md).
rpm-ostree has some tests that use the [coreos-assembler/kola framework](https://coreos.github.io/coreos-assembler/kola/external-tests/).
You will want to [build a custom image](https://github.com/coreos/coreos-assembler/blob/94602e26678fd1a8fa3bda37b3b1d980967be2d6/README-devel.md#using-overrides) and use `kola run -E /path/to/rpm-ostree.git ext.rpm-ostree.*'.
You will want to [build a custom image](https://coreos.github.io/coreos-assembler/working/#using-overrides), then run `make install` in the `${topsrcdir}/tests/kolainst/` directory, and finally `kola run --qemu-image path/to/custom-rpm-ostree-qemu.qcow2 'ext.rpm-ostree.*'`. See the [kola external tests documentation](https://coreos.github.io/coreos-assembler/kola/external-tests/#using-kola-run-with-externally-defined-tests) for more information and also how to filter tests.
There's also a `vmcheck` test suite. This model always operates on an immutable base image. It takes that image and dynamically launches a separate VM for each test using `kola spawn`. For example, using the [CoreOS Assembler](https://coreos.github.io/coreos-assembler/building-fcos/), you can build a FCOS image that contains the version of rpm-ostree that you would like to test. To run the `vmcheck` test suite on it, symlink the built image to `${topsrcdir}/tests/vmcheck/image.qcow2` and execute `tests/vmcheck.sh`.