def test_register_invalid_path(self):
"""We raise an exception if a component is registered with a
non-existent path.
"""
test_path = "/a/test/component/directory"
registry = ComponentRegistry.instance()
with self.assertRaises(StreamlitAPIException) as ctx:
registry.register_component(CustomComponent("test_component", test_path))
self.assertIn("No such component directory", ctx.exception)
def test_register_component_no_path(self):
"""It's not an error to register a component without a path."""
registry = ComponentRegistry.instance()
# Return None when the component hasn't been registered
self.assertIsNone(registry.get_component_path("test_component"))
# And also return None when the component doesn't have a path
registry.register_component(
CustomComponent("test_component", url="http://not.a.url"))
self.assertIsNone(registry.get_component_path("test_component"))
def test_register_duplicate_path(self):
"""It's not an error to re-register a component.
(This can happen during development).
"""
test_path_1 = "/a/test/component/directory"
test_path_2 = "/another/test/component/directory"
def isdir(path):
return path in (test_path_1, test_path_2)
registry = ComponentRegistry.instance()
with mock.patch(
"streamlit.components.v1.components.os.path.isdir", side_effect=isdir
):
registry.register_component(CustomComponent("test_component", test_path_1))
registry.register_component(CustomComponent("test_component", test_path_1))
self.assertEqual(test_path_1, registry.get_component_path("test_component"))
registry.register_component(CustomComponent("test_component", test_path_2))
self.assertEqual(test_path_2, registry.get_component_path("test_component"))
def test_register_component_with_path(self):
"""Registering a component should associate it with its path."""
test_path = "/a/test/component/directory"
def isdir(path):
return path == test_path
registry = ComponentRegistry.instance()
with mock.patch("streamlit.components.v1.components.os.path.isdir",
side_effect=isdir):
registry.register_component(
CustomComponent("test_component", path=test_path))
self.assertEqual(test_path,
registry.get_component_path("test_component"))