1 files changed, 19 insertions, 0 deletions
diff --git a/src/python/test/test_simplex_tree.py b/src/python/test/test_simplex_tree.py
index ac2b59c7..3b23fa0b 100755
--- a/src/python/test/test_simplex_tree.py
+++ b/src/python/test/test_simplex_tree.py
@@ -380,3 +380,22 @@ def test_reset_filtration():
                 assert st.filtration(simplex[0]) >= 2.
             else:
                 assert st.filtration(simplex[0]) == 0.
+
+def test_boundaries_iterator():
+    st = SimplexTree()
+
+    assert st.insert([0, 1, 2, 3], filtration=1.0) == True
+    assert st.insert([1, 2, 3, 4], filtration=2.0) == True
+
+    assert list(st.get_boundaries([1, 2, 3])) == [([1, 2], 1.0), ([1, 3], 1.0), ([2, 3], 1.0)]
+    assert list(st.get_boundaries([2, 3, 4])) == [([2, 3], 1.0), ([2, 4], 2.0), ([3, 4], 2.0)]
+    assert list(st.get_boundaries([2])) == []
+
+    with pytest.raises(RuntimeError):
+        list(st.get_boundaries([]))
+
+    with pytest.raises(RuntimeError):
+        list(st.get_boundaries([0, 4])) # (0, 4) does not exist
+
+    with pytest.raises(RuntimeError):
+        list(st.get_boundaries([6])) # (6) does not exist