def test_cannot_unregister_a_non_registered_tag(self):
# Setup
number_of_tags_before = len(tag_pool.get_tags())
# Run & check
with pytest.raises(TagNotRegistered):
tag_pool.unregister_tag(FooTagSub)
number_of_tags_after = len(tag_pool.get_tags())
assert number_of_tags_before == number_of_tags_after
def test_cannot_unregister_a_non_registered_tag(self):
# Setup
number_of_tags_before = len(tag_pool.get_tags())
# Run & check
with pytest.raises(TagNotRegistered):
tag_pool.unregister_tag(FooTagSub)
number_of_tags_after = len(tag_pool.get_tags())
assert number_of_tags_before == number_of_tags_after
def test_can_not_unregister_a_non_registered_tag(self):
# Setup
number_of_tags_before = len(tag_pool.get_tags())
# Run & check
with self.assertRaises(TagNotRegistered):
tag_pool.unregister_tag(FooTagSub)
number_of_tags_after = len(tag_pool.get_tags())
self.assertEqual(number_of_tags_before, number_of_tags_after)
def test_should_raise_if_a_tag_is_registered_twice(self):
# Setup
number_of_tags_before = len(tag_pool.get_tags())
tag_pool.register_tag(FooTag)
# Run & check
# Let's add it a second time. We should catch an exception
with pytest.raises(TagAlreadyRegistered):
tag_pool.register_tag(FooTag)
# Let's make sure we have the same number of tags as before
tag_pool.unregister_tag(FooTag)
number_of_tags_after = len(tag_pool.get_tags())
assert number_of_tags_before == number_of_tags_after
def test_should_raise_if_a_tag_is_registered_twice(self):
# Setup
number_of_tags_before = len(tag_pool.get_tags())
tag_pool.register_tag(FooTag)
# Run & check
# Let's add it a second time. We should catch an exception
with pytest.raises(TagAlreadyRegistered):
tag_pool.register_tag(FooTag)
# Let's make sure we have the same number of tags as before
tag_pool.unregister_tag(FooTag)
number_of_tags_after = len(tag_pool.get_tags())
assert number_of_tags_before == number_of_tags_after
