Fix MayaInterval.iso8601()

maya/core.py

@@ -352,7 +352,7 @@ class MayaInterval(object):
 
     def iso8601(self):
         """Returns an ISO 8601 representation of the MayaInterval."""
-        return '{0}/{1}'.format(self.start.iso6801, self.end.iso8601)
+        return '{0}/{1}'.format(self.start.iso8601(), self.end.iso8601())
 
     @classmethod
     def from_iso8601(cls, s):

tests/test_maya_interval.py

@@ -582,3 +582,9 @@ def test_interval_from_datetime():
     )
     assert interval3.start == start
     assert interval3.end == end
+
+
+def test_interval_iso8601():
+    start = maya.when('11-17-11 08:09:10')
+    interval = maya.MayaInterval(start=start, duration=1)
+    assert interval.iso8601() == '2011-11-17T08:09:10Z/2011-11-17T08:09:11Z'