@@ -0,0 +1,640 @@
+%22%22%22%0AHelpers / fixtures for pytest%0A%22%22%22%0A%0Aimport pytest%0A%0Aimport pypeman.channels%0Aimport pypeman.endpoints%0Aimport pypeman.nodes%0A%0A%0A@pytest.fixture(scope=%22function%22)%0Adef clear_graph():%0A    n_nodes = len(pypeman.nodes.all_nodes)%0A    n_channels = len(pypeman.channels.all_channels)%0A    n_endpoints = len(pypeman.endpoints.all_endpoints)%0A    pypeman.nodes.reset_pypeman_nodes()%0A    pypeman.channels.reset_pypeman_channels()%0A    pypeman.endpoints.reset_pypeman_endpoints()%0A    yield n_nodes, n_channels, n_endpoints%0A    pypeman.nodes.reset_pypeman_nodes()%0A    pypeman.channels.reset_pypeman_channels()%0A    pypeman.endpoints.reset_pypeman_endpoints()%0A

add pytest helper