PulpQE / pulp-smash / 426

63%

Pull #192

travis-ci

Skip tests for which plugins are missing

Pulp has a plugin architecture, and support for many content unit types
can be provided by plugins. Thus, for Pulp Smash to assume that all
available plugins are installed on a target Pulp server is
inappropriate. A better approach is to inspect the target Pulp server at
run-time, determine which plugins are installed, and then run or skip
tests as appropriate. Do so.

The most elegant way to implement this is by hooking into the unittest
load_tests protocol. [1] Unfortunately, few third party test runners
implement proper support for this protocol. In addition, other test
runners do provide support the jUnit XML reporting, which is not
available in the unittest or unittest2 test runners. Work around this
issue by inserting plugin checks into `setUpModule` functions.

No new test failures are introduced as a result of this change. Test
results generated by executing the following command:

    python -m unittest2 discover pulp_smash.tests

Fix https://github.com/PulpQE/pulp-smash/issues/182.

[1] https://docs.python.org/3.5/library/unittest.html#load-tests-protocol

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