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# Copyright 2018 Dirk Thomas
# Licensed under the Apache License, Version 2.0
import os
from pathlib import Path
from tempfile import TemporaryDirectory
from unittest.mock import patch
from colcon_core.location import get_relative_package_index_path
from colcon_core.shell.template.prefix_util import get_packages
from colcon_core.shell.template.prefix_util import main
from colcon_core.shell.template.prefix_util import order_packages
from colcon_core.shell.template.prefix_util import reduce_cycle_set
import pytest
def test_main(capsys):
with patch(
'colcon_core.shell.template.prefix_util.get_packages',
return_value={'pkgA': set()}
):
main([])
out, err = capsys.readouterr()
assert out == 'pkgA\n'
assert not err
def test_get_packages():
with TemporaryDirectory(prefix='test_colcon_') as prefix_path:
prefix_path = Path(prefix_path)
# check no packages in not merged install layout
packages = get_packages(prefix_path, False)
assert packages == {}
# mock packages in not merged install layout
subdirectory = get_relative_package_index_path()
for pkg_name in ('pkgA', 'pkgB'):
(prefix_path / pkg_name / subdirectory).mkdir(parents=True)
(prefix_path / pkg_name / subdirectory / pkg_name).write_text(
'depX')
(prefix_path / 'dummy_dir').mkdir()
(prefix_path / '.hidden_dir').mkdir()
(prefix_path / 'dummy_file').write_text('')
# check no packages in merged install layout
packages = get_packages(prefix_path, True)
assert packages == {}
# mock packages in merged install layout
(prefix_path / subdirectory).mkdir(parents=True)
(prefix_path / subdirectory / 'pkgB').write_text('')
(prefix_path / subdirectory / 'pkgC').write_text(
os.pathsep.join(('pkgB', 'depC')))
(prefix_path / subdirectory / 'dummy_dir').mkdir()
(prefix_path / subdirectory / '.hidden_file').write_text('')
# check packages and dependencies in not merged install layout
packages = get_packages(prefix_path, False)
assert len(packages) == 2
assert 'pkgA' in packages
assert packages['pkgA'] == set()
assert 'pkgB' in packages
assert packages['pkgB'] == set()
# check packages and dependencies in not merged install layout
packages = get_packages(prefix_path, True)
assert len(packages) == 2
assert 'pkgB' in packages
assert packages['pkgB'] == set()
assert 'pkgC' in packages
assert packages['pkgC'] == {'pkgB'}
def test_order_packages():
packages = {
'pkgA': {'pkgC'},
'pkgB': {},
'pkgC': {},
}
ordered = order_packages(packages)
assert ordered == ['pkgB', 'pkgC', 'pkgA']
packages = {
'pkgA': {'pkgB'},
'pkgB': {'pkgA'},
'pkgC': set(),
}
with pytest.raises(RuntimeError) as e:
ordered = order_packages(packages)
assert 'Circular dependency between:' in str(e.value)
assert 'pkgA' in str(e.value)
assert 'pkgB' in str(e.value)
assert 'pkgC' not in str(e.value)
def test_reduce_cycle_set():
packages = {
'pkgA': {'pkgB'},
'pkgB': set(),
}
reduce_cycle_set(packages)
assert len(packages) == 0
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