Add .coveragerc file

Author: Oliver Scott

.coveragerc

@@ -0,0 +1,9 @@
+[run]
+omit =
+    scaffoldgraph/vis/notebook/*,
+    scaffoldgraph/scripts/misc.py,
+
+[report]
+exclude_lines =
+    pragma: no cover
+    logger.*

tests/test_network.py

@@ -83,7 +83,7 @@ def test_traversal(network):
 
 
 def test_separate_disconnected(network):
-    assert len(network.separate_disconnected_components()) == 2
+    assert len(network.separate_disconnected_components(sort=True)) == 2
     assert type(network.separate_disconnected_components()[0]) == type(network)