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Diffstat (limited to 'pkg_resources/tests/test_working_set.py')
| -rw-r--r-- | pkg_resources/tests/test_working_set.py | 482 |
1 files changed, 482 insertions, 0 deletions
diff --git a/pkg_resources/tests/test_working_set.py b/pkg_resources/tests/test_working_set.py new file mode 100644 index 00000000..db13c714 --- /dev/null +++ b/pkg_resources/tests/test_working_set.py @@ -0,0 +1,482 @@ +import inspect +import re +import textwrap +import functools + +import pytest + +import pkg_resources + +from .test_resources import Metadata + + +def strip_comments(s): + return '\n'.join( + line for line in s.split('\n') + if line.strip() and not line.strip().startswith('#') + ) + + +def parse_distributions(s): + ''' + Parse a series of distribution specs of the form: + {project_name}-{version} + [optional, indented requirements specification] + + Example: + + foo-0.2 + bar-1.0 + foo>=3.0 + [feature] + baz + + yield 2 distributions: + - project_name=foo, version=0.2 + - project_name=bar, version=1.0, + requires=['foo>=3.0', 'baz; extra=="feature"'] + ''' + s = s.strip() + for spec in re.split(r'\n(?=[^\s])', s): + if not spec: + continue + fields = spec.split('\n', 1) + assert 1 <= len(fields) <= 2 + name, version = fields.pop(0).split('-') + if fields: + requires = textwrap.dedent(fields.pop(0)) + metadata = Metadata(('requires.txt', requires)) + else: + metadata = None + dist = pkg_resources.Distribution(project_name=name, + version=version, + metadata=metadata) + yield dist + + +class FakeInstaller: + + def __init__(self, installable_dists): + self._installable_dists = installable_dists + + def __call__(self, req): + return next(iter(filter(lambda dist: dist in req, + self._installable_dists)), None) + + +def parametrize_test_working_set_resolve(*test_list): + idlist = [] + argvalues = [] + for test in test_list: + ( + name, + installed_dists, + installable_dists, + requirements, + expected1, expected2 + ) = [ + strip_comments(s.lstrip()) for s in + textwrap.dedent(test).lstrip().split('\n\n', 5) + ] + installed_dists = list(parse_distributions(installed_dists)) + installable_dists = list(parse_distributions(installable_dists)) + requirements = list(pkg_resources.parse_requirements(requirements)) + for id_, replace_conflicting, expected in ( + (name, False, expected1), + (name + '_replace_conflicting', True, expected2), + ): + idlist.append(id_) + expected = strip_comments(expected.strip()) + if re.match(r'\w+$', expected): + expected = getattr(pkg_resources, expected) + assert issubclass(expected, Exception) + else: + expected = list(parse_distributions(expected)) + argvalues.append(pytest.param(installed_dists, installable_dists, + requirements, replace_conflicting, + expected)) + return pytest.mark.parametrize('installed_dists,installable_dists,' + 'requirements,replace_conflicting,' + 'resolved_dists_or_exception', + argvalues, ids=idlist) + + +@parametrize_test_working_set_resolve( + ''' + # id + noop + + # installed + + # installable + + # wanted + + # resolved + + # resolved [replace conflicting] + ''', + + ''' + # id + already_installed + + # installed + foo-3.0 + + # installable + + # wanted + foo>=2.1,!=3.1,<4 + + # resolved + foo-3.0 + + # resolved [replace conflicting] + foo-3.0 + ''', + + ''' + # id + installable_not_installed + + # installed + + # installable + foo-3.0 + foo-4.0 + + # wanted + foo>=2.1,!=3.1,<4 + + # resolved + foo-3.0 + + # resolved [replace conflicting] + foo-3.0 + ''', + + ''' + # id + not_installable + + # installed + + # installable + + # wanted + foo>=2.1,!=3.1,<4 + + # resolved + DistributionNotFound + + # resolved [replace conflicting] + DistributionNotFound + ''', + + ''' + # id + no_matching_version + + # installed + + # installable + foo-3.1 + + # wanted + foo>=2.1,!=3.1,<4 + + # resolved + DistributionNotFound + + # resolved [replace conflicting] + DistributionNotFound + ''', + + ''' + # id + installable_with_installed_conflict + + # installed + foo-3.1 + + # installable + foo-3.5 + + # wanted + foo>=2.1,!=3.1,<4 + + # resolved + VersionConflict + + # resolved [replace conflicting] + foo-3.5 + ''', + + ''' + # id + not_installable_with_installed_conflict + + # installed + foo-3.1 + + # installable + + # wanted + foo>=2.1,!=3.1,<4 + + # resolved + VersionConflict + + # resolved [replace conflicting] + DistributionNotFound + ''', + + ''' + # id + installed_with_installed_require + + # installed + foo-3.9 + baz-0.1 + foo>=2.1,!=3.1,<4 + + # installable + + # wanted + baz + + # resolved + foo-3.9 + baz-0.1 + + # resolved [replace conflicting] + foo-3.9 + baz-0.1 + ''', + + ''' + # id + installed_with_conflicting_installed_require + + # installed + foo-5 + baz-0.1 + foo>=2.1,!=3.1,<4 + + # installable + + # wanted + baz + + # resolved + VersionConflict + + # resolved [replace conflicting] + DistributionNotFound + ''', + + ''' + # id + installed_with_installable_conflicting_require + + # installed + foo-5 + baz-0.1 + foo>=2.1,!=3.1,<4 + + # installable + foo-2.9 + + # wanted + baz + + # resolved + VersionConflict + + # resolved [replace conflicting] + baz-0.1 + foo-2.9 + ''', + + ''' + # id + installed_with_installable_require + + # installed + baz-0.1 + foo>=2.1,!=3.1,<4 + + # installable + foo-3.9 + + # wanted + baz + + # resolved + foo-3.9 + baz-0.1 + + # resolved [replace conflicting] + foo-3.9 + baz-0.1 + ''', + + ''' + # id + installable_with_installed_require + + # installed + foo-3.9 + + # installable + baz-0.1 + foo>=2.1,!=3.1,<4 + + # wanted + baz + + # resolved + foo-3.9 + baz-0.1 + + # resolved [replace conflicting] + foo-3.9 + baz-0.1 + ''', + + ''' + # id + installable_with_installable_require + + # installed + + # installable + foo-3.9 + baz-0.1 + foo>=2.1,!=3.1,<4 + + # wanted + baz + + # resolved + foo-3.9 + baz-0.1 + + # resolved [replace conflicting] + foo-3.9 + baz-0.1 + ''', + + ''' + # id + installable_with_conflicting_installable_require + + # installed + foo-5 + + # installable + foo-2.9 + baz-0.1 + foo>=2.1,!=3.1,<4 + + # wanted + baz + + # resolved + VersionConflict + + # resolved [replace conflicting] + baz-0.1 + foo-2.9 + ''', + + ''' + # id + conflicting_installables + + # installed + + # installable + foo-2.9 + foo-5.0 + + # wanted + foo>=2.1,!=3.1,<4 + foo>=4 + + # resolved + VersionConflict + + # resolved [replace conflicting] + VersionConflict + ''', + + ''' + # id + installables_with_conflicting_requires + + # installed + + # installable + foo-2.9 + dep==1.0 + baz-5.0 + dep==2.0 + dep-1.0 + dep-2.0 + + # wanted + foo + baz + + # resolved + VersionConflict + + # resolved [replace conflicting] + VersionConflict + ''', + + ''' + # id + installables_with_conflicting_nested_requires + + # installed + + # installable + foo-2.9 + dep1 + dep1-1.0 + subdep<1.0 + baz-5.0 + dep2 + dep2-1.0 + subdep>1.0 + subdep-0.9 + subdep-1.1 + + # wanted + foo + baz + + # resolved + VersionConflict + + # resolved [replace conflicting] + VersionConflict + ''', +) +def test_working_set_resolve(installed_dists, installable_dists, requirements, + replace_conflicting, resolved_dists_or_exception): + ws = pkg_resources.WorkingSet([]) + list(map(ws.add, installed_dists)) + resolve_call = functools.partial( + ws.resolve, + requirements, installer=FakeInstaller(installable_dists), + replace_conflicting=replace_conflicting, + ) + if inspect.isclass(resolved_dists_or_exception): + with pytest.raises(resolved_dists_or_exception): + resolve_call() + else: + assert sorted(resolve_call()) == sorted(resolved_dists_or_exception) |