add test for scipy#3025

andrenarchy · Dec 4, 2013 · cfa4a9a · cfa4a9a
1 parent be9bb54
commit cfa4a9a
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/scipy/ndimage/tests/test_regression.py b/scipy/ndimage/tests/test_regression.py
@@ -35,5 +35,15 @@ def SE(img, thresh=.7, size=4):
         # shouldn't crash
         SE(a)
 
+def test_gh_issue_3025():
+    """Github issue #3025 - improper merging of labels"""
+    d = np.zeros((60,320))
+    d[:,:257] = 1
+    d[:,260:] = 1
+    d[36,257] = 1
+    d[35,258] = 1
+    d[35,259] = 1
+    assert ndimage.label(d, np.ones((3,3)))[1] == 1
+
 if __name__ == "__main__":
     run_module_suite()