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# `.ci`
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This directory contains scripts for Continuous Integration platforms. Currently
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Azure Pipelines, but they will also happily run on any Debian-like machine.
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The scripts are usually split into `_install` and `_test` steps. The `_install`
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step will damage your machine, the `_test` step will just run the tests the way
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CI runs them.
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There is a common library, `ci_lib.py`, which just centralized a bunch of
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random macros and also environment parsing.
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Some of the scripts allow you to pass extra flags through to the component
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under test, e.g. `../../.ci/ansible_tests.py -vvv` will run with verbose.
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Hack these scripts until your heart is content. There is no pride to be found
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here, just necessity.
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### `ci_lib.run_batches()`
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There are some weird looking functions to extract more paralellism from the
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build. The above function takes lists of strings, arranging for the strings in
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each list to run in order, but for the lists to run in parallel. That's great
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for doing `setup.py install` while pulling a Docker container, for example.
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### Environment Variables
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* `DISTRO`: the `mitogen_` tests need a target Docker container distro. This
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name comes from the Docker Hub `mitogen` user, i.e. `mitogen/$DISTRO-test`
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* `DISTROS`: the `ansible_` tests can run against multiple targets
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simultaneously, which speeds things up. This is a space-separated list of
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DISTRO names, but additionally, supports:
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* `debian-py3`: when generating Ansible inventory file, set
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`ansible_python_interpreter` to `python3`, i.e. run a test where the
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target interpreter is Python 3.
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* `debian*16`: generate 16 Docker containers running Debian. Also works
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with -py3.
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