SciTools/iris — pull request #1473 by rhattersley (2014-12-02 10:27:16+00:00)
Title: Fail on missing results by default.

This PR causes tests to fail if their result files are not present.

To create the result files you can either:
- Run `python setup.py test` with the `--create-missing`/`-m` argument.
- Run a specific test module with the `--create-missing` argument. (NB. There is no `-m` version of the argument because of the possibility for confusion with Python's `-m` argument.) For example:
- `python lib/iris/tests/unit/analysis/maths/test_add.py --create-missing`
- `python -m iris.tests.unit.analysis.math.test_add --create-missing`