# The piwheels project
#   Copyright (c) 2017 Ben Nuttall <https://github.com/bennuttall>
#   Copyright (c) 2017 Dave Jones <dave@waveform.org.uk>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of the copyright holder nor the
#       names of its contributors may be used to endorse or promote products
#       derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.


from piwheels.ranges import (
    consolidate,
    split,
    exclude,
    intersect,
)


def test_consolidate():
    assert list(consolidate([range(5), range(4, 10)])) == [range(10)]
    assert list(consolidate([range(5), range(5, 10)])) == [range(10)]
    assert list(consolidate([range(5), range(6, 10)])) == [range(5), range(6, 10)]


def test_split():
    assert list(split([range(10)], 5)) == [range(5), range(5, 10)]
    assert list(split([range(10)], 0)) == [range(10)]
    assert list(split([range(10)], 20)) == [range(10)]


def test_exclude():
    assert list(exclude([range(10)], range(2))) == [range(2, 10)]
    assert list(exclude([range(10)], range(2, 4))) == [range(2), range(4, 10)]


def test_intersect():
    assert intersect(range(10), range(5)) == range(5)
    assert intersect(range(10), range(10, 2)) is None
    assert intersect(range(10), range(2, 5)) == range(2, 5)
