import abc
import unittest
class FinderTests(unittest.TestCase, metaclass=abc.ABCMeta):
"""Basic tests for a finder to pass."""
@abc.abstractmethod
def test_module(self):
# Test importing a top-level module.
pass
@abc.abstractmethod
def test_package(self):
# Test importing a package.
pass
@abc.abstractmethod
def test_module_in_package(self):
# Test importing a module contained within a package.
# A value for 'path' should be used if for a meta_path finder.
pass
@abc.abstractmethod
def test_package_in_package(self):
# Test importing a subpackage.
# A value for 'path' should be used if for a meta_path finder.
pass
@abc.abstractmethod
def test_package_over_module(self):
# Test that packages are chosen over modules.
pass
@abc.abstractmethod
def test_failure(self):
# Test trying to find a module that cannot be handled.
pass
class LoaderTests(unittest.TestCase, metaclass=abc.ABCMeta):
@abc.abstractmethod
def test_module(self):
"""A module should load without issue.
After the loader returns the module should be in sys.modules.
Attributes to verify:
* __file__
* __loader__
* __name__
* No __path__
"""
pass
@abc.abstractmethod
def test_package(self):
"""Loading a package should work.
After the loader returns the module should be in sys.modules.
Attributes to verify:
* __name__
* __file__
* __package__
* __path__
* __loader__
"""
pass
@abc.abstractmethod
def test_lacking_parent(self):
"""A loader should not be dependent on it's parent package being
imported."""
pass
@abc.abstractmethod
def test_module_reuse(self):
"""If a module is already in sys.modules, it should be reused."""
pass
@abc.abstractmethod
def test_state_after_failure(self):
"""If a module is already in sys.modules and a reload fails
(e.g. a SyntaxError), the module should be in the state it was before
the reload began."""
pass
@abc.abstractmethod
def test_unloadable(self):
"""Test ImportError is raised when the loader is asked to load a module
it can't."""
pass
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