#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2020 Satpy developers
#
# This file is part of satpy.
#
# satpy is free software: you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# satpy is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# satpy. If not, see <http://www.gnu.org/licenses/>.
"""Unit tests for AMSR L2 reader."""
import os
import unittest
from unittest import mock
import numpy as np
from satpy.tests.reader_tests.test_hdf5_utils import FakeHDF5FileHandler
from satpy.tests.utils import convert_file_content_to_data_array
DEFAULT_FILE_DTYPE = np.uint16
DEFAULT_FILE_SHAPE = (10, 30)
DEFAULT_FILE_DATA = np.arange(DEFAULT_FILE_SHAPE[0] * DEFAULT_FILE_SHAPE[1],
dtype=DEFAULT_FILE_DTYPE).reshape(DEFAULT_FILE_SHAPE)
DEFAULT_LAT_DATA = np.linspace(45, 65, DEFAULT_FILE_SHAPE[1]).astype(DEFAULT_FILE_DTYPE)
DEFAULT_LAT_DATA = np.repeat([DEFAULT_LAT_DATA], DEFAULT_FILE_SHAPE[0], axis=0)
DEFAULT_LON_DATA = np.linspace(5, 45, DEFAULT_FILE_SHAPE[1]).astype(DEFAULT_FILE_DTYPE)
DEFAULT_LON_DATA = np.repeat([DEFAULT_LON_DATA], DEFAULT_FILE_SHAPE[0], axis=0)
[docs]class FakeHDF5FileHandler2(FakeHDF5FileHandler):
"""Swap-in HDF5 File Handler."""
[docs] def get_test_content(self, filename, filename_info, filetype_info):
"""Mimic reader input file content."""
file_content = {
'/attr/PlatformShortName': 'GCOM-W1',
'/attr/SensorShortName': 'AMSR2',
'/attr/StartOrbitNumber': '22210',
'/attr/StopOrbitNumber': '22210',
}
k = 'Geophysical Data'
file_content[k] = DEFAULT_FILE_DATA[:, :]
file_content[k + '/shape'] = (DEFAULT_FILE_SHAPE[0], DEFAULT_FILE_SHAPE[1])
file_content[k + '/attr/UNIT'] = 'K'
file_content[k + '/attr/SCALE FACTOR'] = 1
k = 'Latitude of Observation Point'
file_content[k] = DEFAULT_FILE_DATA[:, :]
file_content[k + '/shape'] = (DEFAULT_FILE_SHAPE[0], DEFAULT_FILE_SHAPE[1])
file_content[k + '/attr/UNIT'] = 'deg'
file_content[k + '/attr/SCALE FACTOR'] = 1
k = 'Longitude of Observation Point'
file_content[k] = DEFAULT_FILE_DATA[:, :]
file_content[k + '/shape'] = (DEFAULT_FILE_SHAPE[0], DEFAULT_FILE_SHAPE[1])
file_content[k + '/attr/UNIT'] = 'deg'
file_content[k + '/attr/SCALE FACTOR'] = 1
convert_file_content_to_data_array(file_content, dims=('dim_0', 'dim_1'))
return file_content
[docs]class TestAMSR2L2Reader(unittest.TestCase):
"""Test AMSR2 L2 Reader."""
yaml_file = "amsr2_l2.yaml"
[docs] def setUp(self):
"""Wrap HDF5 file handler with our own fake handler."""
from satpy._config import config_search_paths
from satpy.readers.amsr2_l1b import AMSR2L1BFileHandler
from satpy.readers.amsr2_l2 import AMSR2L2FileHandler
self.reader_configs = config_search_paths(os.path.join('readers', self.yaml_file))
# http://stackoverflow.com/questions/12219967/how-to-mock-a-base-class-with-python-mock-library
self.p = mock.patch.object(AMSR2L2FileHandler, '__bases__', (FakeHDF5FileHandler2,
AMSR2L1BFileHandler))
self.fake_handler = self.p.start()
self.p.is_local = True
[docs] def tearDown(self):
"""Stop wrapping the HDF5 file handler."""
self.p.stop()
[docs] def test_init(self):
"""Test basic init with no extra parameters."""
from satpy.readers import load_reader
r = load_reader(self.reader_configs)
loadables = r.select_files_from_pathnames([
'GW1AM2_202004160129_195B_L2SNSSWLB3300300.h5',
])
self.assertEqual(len(loadables), 1)
r.create_filehandlers(loadables)
# make sure we have some files
self.assertTrue(r.file_handlers)
[docs] def test_load_basic(self):
"""Test loading of basic channels."""
from satpy.readers import load_reader
r = load_reader(self.reader_configs)
loadables = r.select_files_from_pathnames([
'GW1AM2_202004160129_195B_L2SNSSWLB3300300.h5',
])
self.assertEqual(len(loadables), 1)
r.create_filehandlers(loadables)
ds = r.load(['ssw'])
self.assertEqual(len(ds), 1)
for d in ds.values():
self.assertTupleEqual(d.shape, (DEFAULT_FILE_SHAPE[0], int(DEFAULT_FILE_SHAPE[1])))
self.assertIn('area', d.attrs)
self.assertIsNotNone(d.attrs['area'])
self.assertTupleEqual(d.attrs['area'].lons.shape,
(DEFAULT_FILE_SHAPE[0], DEFAULT_FILE_SHAPE[1]))
self.assertTupleEqual(d.attrs['area'].lats.shape,
(DEFAULT_FILE_SHAPE[0], DEFAULT_FILE_SHAPE[1]))