#!/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",
])
assert len(loadables) == 1
r.create_filehandlers(loadables)
# make sure we have some files
assert 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",
])
assert len(loadables) == 1
r.create_filehandlers(loadables)
ds = r.load(["ssw"])
assert len(ds) == 1
for d in ds.values():
assert d.shape == (DEFAULT_FILE_SHAPE[0], int(DEFAULT_FILE_SHAPE[1]))
assert "area" in d.attrs
assert d.attrs["area"] is not None
assert d.attrs["area"].lons.shape == (DEFAULT_FILE_SHAPE[0], DEFAULT_FILE_SHAPE[1])
assert d.attrs["area"].lats.shape == (DEFAULT_FILE_SHAPE[0], DEFAULT_FILE_SHAPE[1])