clean up formatting tests

xarray/core/formatting.py

@@ -272,10 +272,7 @@ def summarize_datavar(name, var, col_width):
 
 
 def summarize_coord(name, var, col_width):
-    from .variable import IndexVariable
-    # is there a cleaner way to check if something is an index variable?
-    variable = getattr(var, 'variable', var)
-    is_index = name in var.dims and isinstance(variable, IndexVariable)
+    is_index = name in var.dims and var.ndim==1
     show_values = var._in_memory
     marker = u'*' if is_index else u' '
     if is_index:

xarray/tests/test_dataset.py

@@ -60,6 +60,11 @@ def create_test_multiindex():
     return Dataset({}, {'x': mindex})
 
 
+def create_test_multidim_coord_no_index():
+    ds = xr.Dataset({'a': ('x', [1, 1]),
+                     'x': (['x', 'y'], [[1, 1, 1, 1], [2, 2, 2, 2]])})
+    return ds
+
 class InaccessibleVariableDataStore(backends.InMemoryDataStore):
     def __init__(self):
         super(InaccessibleVariableDataStore, self).__init__()
@@ -176,6 +181,11 @@ def test_repr_period_index(self):
         # check that creating the repr doesn't raise an error #GH645
         repr(data)
 
+    def test_repr_no_index_on_multidim_coord(self):
+        data = create_test_multidim_coord_no_index()
+        actual = repr(data)
+        assert '*' not in actual
+
     def test_unicode_data(self):
         # regression test for GH834
         data = Dataset({u'foø': [u'ba®']}, attrs={u'å': u'∑'})
@@ -252,8 +262,7 @@ def test_constructor(self):
 
     def test_constructor_multidim_dimensions(self):
         # checks related to GH2368, GH2233
-        ds = xr.Dataset({'a': ('x', 2 * np.arange(100)),
-                         'x': (['x', 'y'], np.arange(1000).reshape(100, 10))})
+        ds = create_test_multidim_coord_no_index()
 
         # dataset should have no indices
         assert not isinstance(ds.variables['x'], IndexVariable)
@@ -262,9 +271,6 @@ def test_constructor_multidim_dimensions(self):
         with pytest.raises(KeyError):
             ds.indexes['x']
 
-        repr(ds)
-        repr(ds.indexes)
-
     def test_constructor_invalid_dims(self):
         # regression for GH1120
         with pytest.raises(MergeError):