Removing the test for multi-grid subsetting. I hadn't realised we eve…

…n supported this, but the check on creation of GriddedDataLists now prevents it. I'm OK with that as subsetting gridded data appears to be the only place we actually support it - which is an edge case and pretty confusing. I'm also pretty sure it would break if any of the 'non-subsetted' coordinates were different.

cis/test/integration/test_subset.py

@@ -87,24 +87,6 @@ def test_GIVEN_multiple_variables_in_gridded_file_WHEN_subset_THEN_subsetted_cor
         self.check_latlon_subsetting(lat_max, lat_min, lon_max, lon_min, 'lat', 'lon')
         self.check_output_contains_variables(self.OUTPUT_FILENAME, [variable1, variable2])
 
-    def test_GIVEN_multiple_gridded_variables_on_different_grids_WHEN_subset_THEN_subset_correctly(self):
-        variable1 = 'v_1'
-        variable2 = 'rh'
-        filename = valid_1d_filename
-        lat_min, lat_max = 40, 60
-        arguments = ['subset', variable1 + ',' + variable2 + ':' + escape_colons(filename),
-                     'y=[%s,%s]' % (lat_min, lat_max), '-o', self.OUTPUT_FILENAME]
-        main_arguments = parse_args(arguments)
-        subset_cmd(main_arguments)
-        self.ds = Dataset(self.OUTPUT_FILENAME)
-        lat = self.ds.variables['latitude'][:]
-        assert_that(min(lat), greater_than_or_equal_to(lat_min))
-        assert_that(max(lat), less_than_or_equal_to(lat_max))
-        lat_1 = self.ds.variables['latitude_1'][:]
-        assert_that(min(lat_1), greater_than_or_equal_to(lat_min))
-        assert_that(max(lat_1), less_than_or_equal_to(lat_max))
-        self.check_output_contains_variables(self.OUTPUT_FILENAME, [variable1, variable2])
-
     def test_GIVEN_variables_specified_by_wildcard_WHEN_subset_THEN_subsetted_correctly(self):
         variable1 = 'surface_albedo???'
         variable2 = 'AOD*'