Add a test for get_indexer with different type

Author: samuelsinayoko

pandas/tests/indexes/interval/test_interval.py

@@ -886,11 +886,12 @@ def test_symmetric_difference(self, closed, sort):
         result = index.symmetric_difference(other, sort=sort)
         tm.assert_index_equal(result, expected)
 
-    def test_get_indexer_errors(self):
+    def test_interval_range_get_indexer_with_different_input_type(self):
         # not sure about this one
         index = pd.interval_range(0, 1)
-        with pytest.raises(KeyError):
-            index.get_indexer(['gg'])
+        # behaviour should be the same as Int64Index and return an
+        # array with values of -1
+        assert np.all(index.get_indexer(['gg']) == np.array([-1]))
 
     @pytest.mark.parametrize('op_name', [
         'union', 'intersection', 'difference', 'symmetric_difference'])