#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2017 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/>.
"""Tests for the simple image writer."""
import unittest
[docs]
class TestPillowWriter(unittest.TestCase):
"""Test Pillow/PIL writer."""
[docs]
def setUp(self):
"""Create temporary directory to save files to."""
import tempfile
self.base_dir = tempfile.mkdtemp()
[docs]
def tearDown(self):
"""Remove the temporary directory created for a test."""
try:
import shutil
shutil.rmtree(self.base_dir, ignore_errors=True)
except OSError:
pass
[docs]
@staticmethod
def _get_test_datasets():
"""Create DataArray for testing."""
from datetime import datetime
import dask.array as da
import xarray as xr
ds1 = xr.DataArray(
da.zeros((100, 200), chunks=50),
dims=("y", "x"),
attrs={"name": "test",
"start_time": datetime.utcnow()}
)
return [ds1]
[docs]
def test_init(self):
"""Test creating the default writer."""
from satpy.writers.simple_image import PillowWriter
PillowWriter()
[docs]
def test_simple_write(self):
"""Test writing datasets with default behavior."""
from satpy.writers.simple_image import PillowWriter
datasets = self._get_test_datasets()
w = PillowWriter(base_dir=self.base_dir)
w.save_datasets(datasets)
[docs]
def test_simple_delayed_write(self):
"""Test writing datasets with delayed computation."""
from dask.delayed import Delayed
from satpy.writers import compute_writer_results
from satpy.writers.simple_image import PillowWriter
datasets = self._get_test_datasets()
w = PillowWriter(base_dir=self.base_dir)
res = w.save_datasets(datasets, compute=False)
for r__ in res:
assert isinstance(r__, Delayed)
r__.compute()
compute_writer_results(res)