Improve test coverage expanders line graph generators solved (PR for issue #6034) (#6071)

* updated test coverage for issue 6034

* updated test to included nx.MultiGraph

1 files changed, 16 insertions, 1 deletions

diff --git a/networkx/generators/tests/test_expanders.py b/networkx/generators/tests/test_expanders.py
index 58f6b1b8..f84b04a7 100644
--- a/networkx/generators/tests/test_expanders.py
+++ b/networkx/generators/tests/test_expanders.py
@@ -64,9 +64,24 @@ def test_paley_graph(p):
             assert (v, u) in G.edges
 
 
-@pytest.mark.parametrize("graph_type", (nx.Graph, nx.DiGraph))
+@pytest.mark.parametrize("graph_type", (nx.Graph, nx.DiGraph, nx.MultiDiGraph))
 def test_margulis_gabber_galil_graph_badinput(graph_type):
     with pytest.raises(
         nx.NetworkXError, match="`create_using` must be an undirected multigraph"
     ):
         nx.margulis_gabber_galil_graph(3, create_using=graph_type)
+
+
+@pytest.mark.parametrize("graph_type", (nx.Graph, nx.DiGraph, nx.MultiDiGraph))
+def test_chordal_cycle_graph_badinput(graph_type):
+    with pytest.raises(
+        nx.NetworkXError, match="`create_using` must be an undirected multigraph"
+    ):
+        nx.chordal_cycle_graph(3, create_using=graph_type)
+
+
+def test_paley_graph_badinput():
+    with pytest.raises(
+        nx.NetworkXError, match="`create_using` cannot be a multigraph."
+    ):
+        nx.paley_graph(3, create_using=nx.MultiGraph)