def test_metadata_attributes(self):
self.assertEqual({}, metadata_attributes({}))
self.assertEqual({}, metadata_attributes({'_dimensions': {}, '_fill_value': -999}))
self.assertEqual({'title': 'Title'},
metadata_attributes({'title': 'Title'})
)
self.assertEqual({'title': 'Title'},
metadata_attributes({'title': 'Title', '_fill_value': -999})
)
self.assertIsInstance(metadata_attributes(OrderedDict()), OrderedDict)
class TemplateTestCase(unittest.TestCase):
with open(TEMPLATE_JSON) as t:
template_dict = json.load(t, object_pairs_hook=OrderedDict)
dimensions = template_dict['_dimensions']
variables = template_dict['_variables']
global_attributes = metadata_attributes(template_dict)
values1 = np.array([1], dtype=np.float32)
values10 = np.arange(10, dtype=np.float32)
@property
def temp_dir(self):
if not hasattr(self, '_temp_dir'):
self._temp_dir = tempfile.mkdtemp(prefix=self.__class__.__name__)
return self._temp_dir
@property
def temp_nc_file(self):
if not hasattr(self, '_temp_nc_file'):
with tempfile.NamedTemporaryFile(suffix='.nc', prefix=self.__class__.__name__, dir=self.temp_dir) as f:
pass
self._temp_nc_file = f.name
return self._temp_nc_file
def tearDown(self):
if hasattr(self, '_temp_dir'):
shutil.rmtree(self._temp_dir)
def test_create_file(self):
template = DatasetTemplate.from_json(TEMPLATE_JSON)
template.variables['TIME']['_data'] = self.values10
template.variables['DEPTH']['_data'] = self.values1
template.variables['TEMP']['_data'] = self.values10.reshape((10, 1))
template.to_netcdf(self.temp_nc_file)
dataset = Dataset(self.temp_nc_file)
expected_dimensions = OrderedDict([
('TIME', len(self.values10)),
('DEPTH', len(self.values1))
])
ds_dimensions = OrderedDict((k, v.size) for k, v in dataset.dimensions.items())
self.assertEqual(expected_dimensions, ds_dimensions)
for vname, vdict in self.variables.items():
ds_var = dataset[vname]
self.assertEqual(vdict['_dimensions'], list(ds_var.dimensions))
self.assertEqual(vdict['_datatype'], ds_var.dtype)
ds_var_attr = OrderedDict((k, ds_var.getncattr(k)) for k in ds_var.ncattrs())
self.assertEqual(metadata_attributes(vdict), ds_var_attr)
self.assertTrue(all(dataset['TIME'] == self.values10))
self.assertTrue(all(dataset['DEPTH'] == self.values1))
self.assertTrue(all(dataset['TEMP'] == self.values10.reshape(10, 1)))
ds_global_attributes = OrderedDict((k, dataset.getncattr(k)) for k in dataset.ncattrs())
self.assertEqual(self.global_attributes, ds_global_attributes)
def test_init_from_partial_template(self):
template = DatasetTemplate.from_json(TEMPLATE_PARTIAL_JSON)
with open(TEMPLATE_PARTIAL_JSON) as t:
tdict = json.load(t, object_pairs_hook=OrderedDict)
self.assertEqual({}, template.dimensions)
self.assertEqual(tdict['_variables'], template.variables)
self.assertEqual(metadata_attributes(tdict), template.global_attributes)