How to add a new test¶
Test scripts are python scripts which return zero (success) or non-zero (failure). You define what success or failure means. The runtest library helps you with basic tasks but you are free to go beyond and define own tests with arbitrary complexity.
Strive for portability¶
Avoid shell programming or symlinks in test scripts otherwise the tests are not portable to Windows. Therefore do not use os.system() or os.symlink(). Do not use explicit forward slashes for paths, instead use os.path.join().
Always test that the test really works¶
It is easy to make a mistake and create a test which is always “successful”. Test that your test catches mistakes. Verify whether it extracts the right numbers.
Never commit functionality to the main development line without tests¶
If you commit functionality to the main development line without tests then this functionality will break sooner or later and we have no automatic mechanism to detect it. Committing new code without tests is bad karma.
Never add inputs to the test directories which are never run¶
We want all inputs and outputs to be accessile by the default test suite. Otherwise we have no automatic way to detect that some inputs or outputs have degraded. And degraded inputs and outputs are useless and confusing.