test_array.py 1.92 KB
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#!/usr/bin/env python
# -*- coding: utf-8 -*-

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# py_tools_ds
#
# Copyright (C) 2019  Daniel Scheffler (GFZ Potsdam, daniel.scheffler@gfz-potsdam.de)
#
# This software was developed within the context of the GeoMultiSens project funded
# by the German Federal Ministry of Education and Research
# (project grant code: 01 IS 14 010 A-C).
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option) any
# later version.
#
# This program 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 Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with this program.  If not, see <http://www.gnu.org/licenses/>.

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"""
test_array
----------

Tests for `py_tools_ds.numeric.array` module.
"""

import unittest
import numpy as np

from py_tools_ds.numeric.array import get_array_tilebounds


class Test_get_array_tilebounds(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        cls.arr = np.random.randint(1, 10, (100, 100, 5))

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    def _run_and_validate(self, tile_shape):
        tile_shape = tile_shape[0] or self.arr.shape[0], tile_shape[1] or self.arr.shape[1]

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        bounds = get_array_tilebounds(self.arr.shape, tile_shape)
        (rS, rE), (cS, cE) = bounds[0]
        self.assertEqual(self.arr[rS: rE + 1, cS: cE + 1].shape[:2], tile_shape)

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    def test_block_tile(self):
        self._run_and_validate(tile_shape=(10, 10))

    def test_row(self):
        self._run_and_validate(tile_shape=(1, None))

    def test_col(self):
        self._run_and_validate(tile_shape=(None, 1))

    def test_pixel(self):
        self._run_and_validate(tile_shape=(1, 1))