Index: trunk/tests/test_data_processing.py
===================================================================
diff -u -r82 -r83
--- trunk/tests/test_data_processing.py	(.../test_data_processing.py)	(revision 82)
+++ trunk/tests/test_data_processing.py	(.../test_data_processing.py)	(revision 83)
@@ -403,19 +403,21 @@
     @pytest.mark.unittest
     def test_given_all_args_does_not_raise(self):
         # 1. Given
-        expected_message = om.error_all_arguments_required
-        resampled_data = None
         dataset = xr.DataArray(
                 np.sin(0.3 * np.arange(20).reshape(5, 4)),
                 [
                     (OutputData.var_lon_key, np.arange(5)),
                     (OutputData.var_lat_key, [0.1, 0.2, 0.3, 0.4])])
+        dataset.attrs['cdm_data_type'] = OutputData.var_gridded
         resample_latitude = xr.DataArray(
             [0, 2, 4],
             dims=OutputData.var_lat_key)
         resample_longitude = xr.DataArray(
             [0, 2],
             dims=OutputData.var_lon_key)
+        expected_shape = (2, 3)
+        resampled_data = None
+
         # 2. When
         try:
             resampled_data = DataProcessing.spatial_resampling_grid(
@@ -429,10 +431,43 @@
             )
 
         # 3. Then
-        assert not resampled_data
-        assert str(e_info.value) == expected_message
+        assert resampled_data is not None
+        assert resampled_data.shape == (2, 3)
 
 
+    @pytest.mark.systemtest
+    def test_given_test_file_then_does_resampling(self):
+        # 1. Given
+        dataset = get_gridded_xarray_from_file()
+        assert dataset['SWH'] is not None
+        ini_t, ini_lat, ini_lon = dataset['SWH'].shape
+
+        resample_latitude = xr.DataArray(
+            [0, 2, 4],
+            dims=OutputData.var_lat_key)
+        resample_longitude = xr.DataArray(
+            [0, 2],
+            dims=OutputData.var_lon_key)
+        expected_output_shape = (ini_t, 3, 2)
+        # 2. When
+        try:
+            resampled_data = DataProcessing.spatial_resampling_grid(
+                dataset=dataset,
+                resample_latitude=resample_latitude,
+                resample_longitude=resample_longitude)
+        except Exception as e_info:
+            pytest.fail(
+                'Exception thrown, but not expected: ' +
+                '{}'.format(str(e_info))
+            )
+
+        # 3. Then
+        assert resampled_data is not None
+        assert resampled_data['SWH'] is not None
+        assert resampled_data['SWH'].shape == expected_output_shape, '' + \
+            'The resampled lat/lon for swh does not match expected.'
+
+
 class Test_SpatialGradientsCalculation:
 
     @pytest.mark.unittest