Source code for satpy.tests.reader_tests.test_meris_nc

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"""Module for testing the satpy.readers.meris_nc_sen3 module."""
import unittest
import unittest.mock as mock


[docs] class TestMERISReader(unittest.TestCase): """Test various meris_nc_sen3 filehandlers."""
[docs] @mock.patch("xarray.open_dataset") def test_instantiate(self, mocked_dataset): """Test initialization of file handlers.""" from satpy.readers.meris_nc_sen3 import NCMERIS2, NCMERISCal, NCMERISGeo from satpy.tests.utils import make_dataid ds_id = make_dataid(name="M01", calibration="reflectance") ds_id2 = make_dataid(name="wsqf", calibration="reflectance") filename_info = {"mission_id": "ENV", "dataset_name": "M01", "start_time": 0, "end_time": 0} test = NCMERISCal("somedir/somefile.nc", filename_info, "c") test.get_dataset(ds_id, filename_info) mocked_dataset.assert_called() mocked_dataset.reset_mock() test = NCMERISGeo("somedir/somefile.nc", filename_info, "c") test.get_dataset(ds_id, filename_info) mocked_dataset.assert_called() mocked_dataset.reset_mock() test = NCMERIS2("somedir/somefile.nc", filename_info, "c") test.get_dataset(ds_id, {"nc_key": "the_key"}) test.get_dataset(ds_id2, {"nc_key": "the_key"}) mocked_dataset.assert_called() mocked_dataset.reset_mock()
[docs] @mock.patch("xarray.open_dataset") def test_open_file_objects(self, mocked_open_dataset): """Test initialization of file handlers.""" from satpy.readers.olci_nc import NCOLCIBase filename_info = {"mission_id": "ENV", "dataset_name": "M01", "start_time": 0, "end_time": 0} open_file = mock.MagicMock() file_handler = NCOLCIBase(open_file, filename_info, "c") # deepcode ignore W0104: This is a property that is actually a function call. file_handler.nc # pylint: disable=W0104 mocked_open_dataset.assert_called() open_file.open.assert_called() assert (open_file.open.return_value in mocked_open_dataset.call_args[0] or open_file.open.return_value == mocked_open_dataset.call_args[1].get("filename_or_obj"))
[docs] @mock.patch("xarray.open_dataset") def test_get_dataset(self, mocked_dataset): """Test reading datasets.""" import numpy as np import xarray as xr from satpy.readers.meris_nc_sen3 import NCMERIS2 from satpy.tests.utils import make_dataid mocked_dataset.return_value = xr.Dataset({"mask": (["rows", "columns"], np.array([1 << x for x in range(30)]).reshape(5, 6))}, coords={"rows": np.arange(5), "columns": np.arange(6)}) ds_id = make_dataid(name="mask") filename_info = {"mission_id": "ENV", "dataset_name": "mask", "start_time": 0, "end_time": 0} test = NCMERIS2("somedir/somefile.nc", filename_info, "c") res = test.get_dataset(ds_id, {"nc_key": "mask"}) assert res.dtype == np.dtype("bool")
[docs] @mock.patch("xarray.open_dataset") def test_meris_angles(self, mocked_dataset): """Test reading datasets.""" import numpy as np import xarray as xr from satpy.readers.meris_nc_sen3 import NCMERISAngles from satpy.tests.utils import make_dataid attr_dict = { "ac_subsampling_factor": 1, "al_subsampling_factor": 2, } mocked_dataset.return_value = xr.Dataset({"SAA": (["tie_rows", "tie_columns"], np.array([1 << x for x in range(30)]).reshape(5, 6)), "SZA": (["tie_rows", "tie_columns"], np.array([1 << x for x in range(30)]).reshape(5, 6)), "OAA": (["tie_rows", "tie_columns"], np.array([1 << x for x in range(30)]).reshape(5, 6)), "OZA": (["tie_rows", "tie_columns"], np.array([1 << x for x in range(30)]).reshape(5, 6))}, coords={"rows": np.arange(5), "columns": np.arange(6)}, attrs=attr_dict) filename_info = {"mission_id": "ENV", "dataset_name": "M01", "start_time": 0, "end_time": 0} ds_id = make_dataid(name="solar_azimuth_angle") ds_id2 = make_dataid(name="satellite_zenith_angle") test = NCMERISAngles("somedir/somefile.nc", filename_info, "c") test.get_dataset(ds_id, filename_info) test.get_dataset(ds_id2, filename_info) mocked_dataset.assert_called() mocked_dataset.reset_mock()
[docs] @mock.patch("xarray.open_dataset") def test_meris_meteo(self, mocked_dataset): """Test reading datasets.""" import numpy as np import xarray as xr from satpy.readers.meris_nc_sen3 import NCMERISMeteo from satpy.tests.utils import make_dataid attr_dict = { "ac_subsampling_factor": 1, "al_subsampling_factor": 2, } data = {"humidity": (["tie_rows", "tie_columns"], np.array([1 << x for x in range(30)]).reshape(5, 6)), "total_ozone": (["tie_rows", "tie_columns"], np.array([1 << x for x in range(30)]).reshape(5, 6)), "sea_level_pressure": (["tie_rows", "tie_columns"], np.array([1 << x for x in range(30)]).reshape(5, 6)), "total_columnar_water_vapour": (["tie_rows", "tie_columns"], np.array([1 << x for x in range(30)]).reshape(5, 6))} mocked_dataset.return_value = xr.Dataset(data, coords={"rows": np.arange(5), "columns": np.arange(6)}, attrs=attr_dict) filename_info = {"mission_id": "ENV", "dataset_name": "humidity", "start_time": 0, "end_time": 0} ds_id = make_dataid(name="humidity") ds_id2 = make_dataid(name="total_ozone") test = NCMERISMeteo("somedir/somefile.nc", filename_info, "c") test.get_dataset(ds_id, filename_info) test.get_dataset(ds_id2, filename_info) mocked_dataset.assert_called() mocked_dataset.reset_mock()
[docs] class TestBitFlags(unittest.TestCase): """Test the bitflag reading."""
[docs] def test_bitflags(self): """Test the BitFlags class.""" from functools import reduce import numpy as np from satpy.readers.olci_nc import BitFlags flag_list = ["SEA_ICE", "MEGLINT", "HIGHGLINT", "CASE2_S", "CASE2_ANOM", "HAZE_OVER_WATER", "WHITECAPS", "AC_FAIL", "BPAC_ON", "WHITE_SCATT", "LOWRW", "HIGHRW", "OUT_OF_RANGE_AAC", "OUT_OF_SCOPE_AAC", "OUT_OF_RANGE_OC_NN", "OUT_OF_SCOPE_OC_NN", "OUT_OF_RANGE_CHL_OC4ME_INPUT", "OUT_OF_RANGE_CHL_OC4ME"] bits = np.array([1 << x for x in range(len(flag_list))]) bflags = BitFlags(bits, flag_list=flag_list) items = ["SEA_ICE", "MEGLINT", "HIGHGLINT", "HAZE_OVER_WATER", "WHITECAPS", "AC_FAIL", "WHITE_SCATT", "LOWRW", "HIGHRW", "OUT_OF_RANGE_AAC", "OUT_OF_SCOPE_AAC", "OUT_OF_RANGE_OC_NN", "OUT_OF_SCOPE_OC_NN", "OUT_OF_RANGE_CHL_OC4ME_INPUT", "OUT_OF_RANGE_CHL_OC4ME"] mask = reduce(np.logical_or, [bflags[item] for item in items]) expected = np.array([True, True, True, False, False, True, True, True, False, True, True, True, True, True, True, True, True, True]) assert all(mask == expected)