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HACKING.rst

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shade Style Commandments

Read the OpenStack Style Commandments https://docs.openstack.org/hacking/latest/

Indentation

PEP-8 allows for 'visual' indentation. Do not use it. Visual indentation looks like this:

return_value = self.some_method(arg1, arg1,
                                arg3, arg4)

Visual indentation makes refactoring the code base unneccesarily hard.

Instead of visual indentation, use this:

return_value = self.some_method(
    arg1, arg1, arg3, arg4)

That way, if some_method ever needs to be renamed, the only line that needs to be touched is the line with some_method. Additionaly, if you need to line break at the top of a block, please indent the continuation line an additional 4 spaces, like this:

for val in self.some_method(
        arg1, arg1, arg3, arg4):
    self.do_something_awesome()

Neither of these are 'mandated' by PEP-8. However, they are prevailing styles within this code base.

Unit Tests

Unit tests should be virtually instant. If a unit test takes more than 1 second to run, it is a bad unit test. Honestly, 1 second is too slow.

All unit test classes should subclass shade.tests.unit.base.BaseTestCase. The base TestCase class takes care of properly creating OpenStackCloud objects in a way that protects against local environment.