Fix the tests

astropy/wcs/wcsapi/tests/test_fitswcs.py

@@ -138,7 +138,7 @@ def test_simple_celestial():
     assert wcs.world_axis_object_classes['celestial'][0] is SkyCoord
     assert wcs.world_axis_object_classes['celestial'][1] == ()
     assert isinstance(wcs.world_axis_object_classes['celestial'][2]['frame'], ICRS)
-    assert wcs.world_axis_object_classes['celestial'][2]['unit'] is u.deg
+    assert wcs.world_axis_object_classes['celestial'][2]['unit'] is (u.deg, u.deg)
 
     assert_allclose(wcs.pixel_to_world_values(29, 39), (10, 20))
     assert_allclose(wcs.array_index_to_world_values(39, 29), (10, 20))
@@ -256,7 +256,7 @@ def test_spectral_cube():
     assert wcs.world_axis_object_classes['celestial'][0] is SkyCoord
     assert wcs.world_axis_object_classes['celestial'][1] == ()
     assert isinstance(wcs.world_axis_object_classes['celestial'][2]['frame'], Galactic)
-    assert wcs.world_axis_object_classes['celestial'][2]['unit'] is u.deg
+    assert wcs.world_axis_object_classes['celestial'][2]['unit'] is (u.deg, u.deg)
 
     assert wcs.world_axis_object_classes['spectral'][0] is Quantity
     assert wcs.world_axis_object_classes['spectral'][1] == ()
@@ -355,7 +355,7 @@ def test_spectral_cube_nonaligned():
     assert wcs.world_axis_object_classes['celestial'][0] is SkyCoord
     assert wcs.world_axis_object_classes['celestial'][1] == ()
     assert isinstance(wcs.world_axis_object_classes['celestial'][2]['frame'], Galactic)
-    assert wcs.world_axis_object_classes['celestial'][2]['unit'] is u.deg
+    assert wcs.world_axis_object_classes['celestial'][2]['unit'] is (u.deg, u.deg)
 
     assert wcs.world_axis_object_classes['spectral'][0] is Quantity
     assert wcs.world_axis_object_classes['spectral'][1] == ()
@@ -450,7 +450,7 @@ def test_time_cube():
     assert wcs.world_axis_object_classes['celestial'][0] is SkyCoord
     assert wcs.world_axis_object_classes['celestial'][1] == ()
     assert isinstance(wcs.world_axis_object_classes['celestial'][2]['frame'], ICRS)
-    assert wcs.world_axis_object_classes['celestial'][2]['unit'] is u.deg
+    assert wcs.world_axis_object_classes['celestial'][2]['unit'] is (u.deg, u.deg)
 
     assert wcs.world_axis_object_classes['time'][0] is Time
     assert wcs.world_axis_object_classes['time'][1] == ()
@@ -851,7 +851,7 @@ def test_caching_components_and_classes():
     assert wcs.world_axis_object_classes['celestial'][0] is SkyCoord
     assert wcs.world_axis_object_classes['celestial'][1] == ()
     assert isinstance(wcs.world_axis_object_classes['celestial'][2]['frame'], ICRS)
-    assert wcs.world_axis_object_classes['celestial'][2]['unit'] is u.deg
+    assert wcs.world_axis_object_classes['celestial'][2]['unit'] is (u.deg, u.deg)
 
     wcs.wcs.radesys = 'FK5'