ENH: Add chelsea to dataset.

skimage/data/tests/test_data.py

@@ -34,11 +34,16 @@ def test_page():
     data.page()
 
 
-def test_page():
+def test_clock():
     """ Test that "clock" image can be loaded. """
     data.clock()
 
 
+def test_chelsea():
+    """ Test that "chelsea" image can be loaded. """
+    data.chelsea()
+
+
 if __name__ == "__main__":
     from numpy.testing import run_module_suite
     run_module_suite()