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-rw-r--r--t/mop_test.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/t/mop_test.py b/t/mop_test.py
index ce7a333..125b170 100644
--- a/t/mop_test.py
+++ b/t/mop_test.py
@@ -85,3 +85,8 @@ class MopTest(unittest.TestCase):
assert not point.can("z")
assert point3d.can("z")
+
+ assert point.isa(Point)
+ assert point3d.isa(Point)
+ assert not point.isa(Point3D)
+ assert point3d.isa(Point3D)