def test_base_class_context_manager():
"""Exercise the __enter__ and __exit__ methods of Collector."""
collector = Collector()
# use my-collector name because the autouse fixture `reset_backend`
# will clean it up for us
Collector.register_backend("my-collector", lambda: collector)
Collector.set_default_backend("my-collector")
# empty with just to exercise __enter__ and __exit__
with Collector.get():
pass
def test_unimplemented():
"""Collector base class raises NotImplementedError for all public API."""
collector = Collector()
with pytest.raises(NotImplementedError):
collector.update_push_items([])
with pytest.raises(NotImplementedError):
collector.attach_file("somefile.txt", "foobar")
with pytest.raises(NotImplementedError):
collector.append_file("somefile.txt", "foobar")
def test_register_backend_wrong_type():
"""register_backend raises TypeError if passed incorrect type"""
with pytest.raises(TypeError):
Collector.register_backend("my-colletor", Collector())