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pip/tests/unit/test_finder.py

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import logging
import sys
import pytest
from mock import Mock, patch
from pip._vendor.packaging.specifiers import SpecifierSet
from pip._vendor.packaging.tags import Tag
from pkg_resources import parse_version
import pip._internal.utils.compatibility_tags
from pip._internal.exceptions import BestVersionAlreadyInstalled, DistributionNotFound
from pip._internal.index.package_finder import (
CandidateEvaluator,
InstallationCandidate,
Link,
LinkEvaluator,
)
from pip._internal.models.target_python import TargetPython
from pip._internal.req.constructors import install_req_from_line
from tests.lib import make_test_finder
def make_no_network_finder(
find_links,
allow_all_prereleases=False, # type: bool
):
"""
Create and return a PackageFinder instance for test purposes that
doesn't make any network requests when _get_pages() is called.
"""
finder = make_test_finder(
find_links=find_links,
allow_all_prereleases=allow_all_prereleases,
)
# Replace the PackageFinder._link_collector's _get_pages() with a no-op.
link_collector = finder._link_collector
link_collector._get_pages = lambda locations: []
return finder
def test_no_mpkg(data):
"""Finder skips zipfiles with "macosx10" in the name."""
finder = make_test_finder(find_links=[data.find_links])
req = install_req_from_line("pkgwithmpkg")
found = finder.find_requirement(req, False)
assert found.link.url.endswith("pkgwithmpkg-1.0.tar.gz"), found
def test_no_partial_name_match(data):
"""Finder requires the full project name to match, not just beginning."""
finder = make_test_finder(find_links=[data.find_links])
req = install_req_from_line("gmpy")
found = finder.find_requirement(req, False)
assert found.link.url.endswith("gmpy-1.15.tar.gz"), found
def test_tilde():
"""Finder can accept a path with ~ in it and will normalize it."""
patched_exists = patch(
'pip._internal.index.collector.os.path.exists', return_value=True
)
with patched_exists:
finder = make_test_finder(find_links=['~/python-pkgs'])
req = install_req_from_line("gmpy")
with pytest.raises(DistributionNotFound):
finder.find_requirement(req, False)
def test_duplicates_sort_ok(data):
"""Finder successfully finds one of a set of duplicates in different
locations"""
finder = make_test_finder(find_links=[data.find_links, data.find_links2])
req = install_req_from_line("duplicate")
found = finder.find_requirement(req, False)
assert found.link.url.endswith("duplicate-1.0.tar.gz"), found
def test_finder_detects_latest_find_links(data):
"""Test PackageFinder detects latest using find-links"""
req = install_req_from_line('simple', None)
finder = make_test_finder(find_links=[data.find_links])
found = finder.find_requirement(req, False)
assert found.link.url.endswith("simple-3.0.tar.gz")
def test_incorrect_case_file_index(data):
"""Test PackageFinder detects latest using wrong case"""
req = install_req_from_line('dinner', None)
finder = make_test_finder(index_urls=[data.find_links3])
found = finder.find_requirement(req, False)
assert found.link.url.endswith("Dinner-2.0.tar.gz")
@pytest.mark.network
def test_finder_detects_latest_already_satisfied_find_links(data):
"""Test PackageFinder detects latest already satisfied using find-links"""
req = install_req_from_line('simple', None)
# the latest simple in local pkgs is 3.0
latest_version = "3.0"
satisfied_by = Mock(
location="/path",
parsed_version=parse_version(latest_version),
version=latest_version
)
req.satisfied_by = satisfied_by
finder = make_test_finder(find_links=[data.find_links])
with pytest.raises(BestVersionAlreadyInstalled):
finder.find_requirement(req, True)
@pytest.mark.network
def test_finder_detects_latest_already_satisfied_pypi_links():
"""Test PackageFinder detects latest already satisfied using pypi links"""
req = install_req_from_line('initools', None)
# the latest initools on PyPI is 0.3.1
latest_version = "0.3.1"
satisfied_by = Mock(
location="/path",
parsed_version=parse_version(latest_version),
version=latest_version,
)
req.satisfied_by = satisfied_by
finder = make_test_finder(index_urls=["http://pypi.org/simple/"])
with pytest.raises(BestVersionAlreadyInstalled):
finder.find_requirement(req, True)
class TestWheel:
def test_skip_invalid_wheel_link(self, caplog, data):
"""
Test if PackageFinder skips invalid wheel filenames
"""
caplog.set_level(logging.DEBUG)
req = install_req_from_line("invalid")
# data.find_links contains "invalid.whl", which is an invalid wheel
finder = make_test_finder(find_links=[data.find_links])
with pytest.raises(DistributionNotFound):
finder.find_requirement(req, True)
assert 'Skipping link: invalid wheel filename:' in caplog.text
def test_not_find_wheel_not_supported(self, data, monkeypatch):
"""
Test not finding an unsupported wheel.
"""
req = install_req_from_line("simple.dist")
target_python = TargetPython()
# Make sure no tags will match.
target_python._valid_tags = []
finder = make_test_finder(
find_links=[data.find_links],
target_python=target_python,
)
with pytest.raises(DistributionNotFound):
finder.find_requirement(req, True)
def test_find_wheel_supported(self, data, monkeypatch):
"""
Test finding supported wheel.
"""
monkeypatch.setattr(
pip._internal.utils.compatibility_tags,
"get_supported",
lambda **kw: [('py2', 'none', 'any')],
)
req = install_req_from_line("simple.dist")
finder = make_test_finder(find_links=[data.find_links])
found = finder.find_requirement(req, True)
assert (
found.link.url.endswith("simple.dist-0.1-py2.py3-none-any.whl")
), found
def test_wheel_over_sdist_priority(self, data):
"""
Test wheels have priority over sdists.
`test_link_sorting` also covers this at lower level
"""
req = install_req_from_line("priority")
finder = make_test_finder(find_links=[data.find_links])
found = finder.find_requirement(req, True)
assert found.link.url.endswith("priority-1.0-py2.py3-none-any.whl"), \
found
def test_existing_over_wheel_priority(self, data):
"""
Test existing install has priority over wheels.
`test_link_sorting` also covers this at a lower level
"""
req = install_req_from_line('priority', None)
latest_version = "1.0"
satisfied_by = Mock(
location="/path",
parsed_version=parse_version(latest_version),
version=latest_version,
)
req.satisfied_by = satisfied_by
finder = make_test_finder(find_links=[data.find_links])
with pytest.raises(BestVersionAlreadyInstalled):
finder.find_requirement(req, True)
def test_link_sorting(self):
"""
Test link sorting
"""
links = [
InstallationCandidate("simple", "2.0", Link('simple-2.0.tar.gz')),
InstallationCandidate(
"simple",
"1.0",
Link('simple-1.0-pyT-none-TEST.whl'),
),
InstallationCandidate(
"simple",
'1.0',
Link('simple-1.0-pyT-TEST-any.whl'),
),
InstallationCandidate(
"simple",
'1.0',
Link('simple-1.0-pyT-none-any.whl'),
),
InstallationCandidate(
"simple",
'1.0',
Link('simple-1.0.tar.gz'),
),
]
valid_tags = [
Tag('pyT', 'none', 'TEST'),
Tag('pyT', 'TEST', 'any'),
Tag('pyT', 'none', 'any'),
]
specifier = SpecifierSet()
evaluator = CandidateEvaluator(
'my-project', supported_tags=valid_tags, specifier=specifier,
)
sort_key = evaluator._sort_key
results = sorted(links, key=sort_key, reverse=True)
results2 = sorted(reversed(links), key=sort_key, reverse=True)
assert links == results == results2, results2
def test_link_sorting_wheels_with_build_tags(self):
"""Verify build tags affect sorting."""
links = [
InstallationCandidate(
"simplewheel",
"2.0",
Link("simplewheel-2.0-1-py2.py3-none-any.whl"),
),
InstallationCandidate(
"simplewheel",
"2.0",
Link("simplewheel-2.0-py2.py3-none-any.whl"),
),
InstallationCandidate(
"simplewheel",
"1.0",
Link("simplewheel-1.0-py2.py3-none-any.whl"),
),
]
candidate_evaluator = CandidateEvaluator.create('my-project')
sort_key = candidate_evaluator._sort_key
results = sorted(links, key=sort_key, reverse=True)
results2 = sorted(reversed(links), key=sort_key, reverse=True)
assert links == results == results2, results2
def test_finder_priority_file_over_page(data):
"""Test PackageFinder prefers file links over equivalent page links"""
req = install_req_from_line('gmpy==1.15', None)
finder = make_test_finder(
find_links=[data.find_links],
index_urls=["http://pypi.org/simple/"],
)
all_versions = finder.find_all_candidates(req.name)
# 1 file InstallationCandidate followed by all https ones
assert all_versions[0].link.scheme == 'file'
assert all(version.link.scheme == 'https'
for version in all_versions[1:]), all_versions
found = finder.find_requirement(req, False)
assert found.link.url.startswith("file://")
def test_finder_priority_nonegg_over_eggfragments():
"""Test PackageFinder prefers non-egg links over "#egg=" links"""
req = install_req_from_line('bar==1.0', None)
links = ['http://foo/bar.py#egg=bar-1.0', 'http://foo/bar-1.0.tar.gz']
finder = make_no_network_finder(links)
all_versions = finder.find_all_candidates(req.name)
assert all_versions[0].link.url.endswith('tar.gz')
assert all_versions[1].link.url.endswith('#egg=bar-1.0')
found = finder.find_requirement(req, False)
assert found.link.url.endswith('tar.gz')
links.reverse()
finder = make_no_network_finder(links)
all_versions = finder.find_all_candidates(req.name)
assert all_versions[0].link.url.endswith('tar.gz')
assert all_versions[1].link.url.endswith('#egg=bar-1.0')
found = finder.find_requirement(req, False)
assert found.link.url.endswith('tar.gz')
def test_finder_only_installs_stable_releases(data):
"""
Test PackageFinder only accepts stable versioned releases by default.
"""
req = install_req_from_line("bar", None)
# using a local index (that has pre & dev releases)
finder = make_test_finder(index_urls=[data.index_url("pre")])
found = finder.find_requirement(req, False)
assert found.link.url.endswith("bar-1.0.tar.gz"), found.link.url
# using find-links
links = ["https://foo/bar-1.0.tar.gz", "https://foo/bar-2.0b1.tar.gz"]
finder = make_no_network_finder(links)
found = finder.find_requirement(req, False)
assert found.link.url == "https://foo/bar-1.0.tar.gz"
links.reverse()
finder = make_no_network_finder(links)
found = finder.find_requirement(req, False)
assert found.link.url == "https://foo/bar-1.0.tar.gz"
def test_finder_only_installs_data_require(data):
"""
Test whether the PackageFinder understand data-python-requires
This can optionally be exposed by a simple-repository to tell which
distribution are compatible with which version of Python by adding a
data-python-require to the anchor links.
See pep 503 for more information.
"""
# using a local index (that has pre & dev releases)
finder = make_test_finder(index_urls=[data.index_url("datarequire")])
links = finder.find_all_candidates("fakepackage")
expected = ['1.0.0', '9.9.9']
if (2, 7) < sys.version_info < (3,):
expected.append('2.7.0')
elif sys.version_info > (3, 3):
expected.append('3.3.0')
assert {str(v.version) for v in links} == set(expected)
def test_finder_installs_pre_releases(data):
"""
Test PackageFinder finds pre-releases if asked to.
"""
req = install_req_from_line("bar", None)
# using a local index (that has pre & dev releases)
finder = make_test_finder(
index_urls=[data.index_url("pre")],
allow_all_prereleases=True,
)
found = finder.find_requirement(req, False)
assert found.link.url.endswith("bar-2.0b1.tar.gz"), found.link.url
# using find-links
links = ["https://foo/bar-1.0.tar.gz", "https://foo/bar-2.0b1.tar.gz"]
finder = make_no_network_finder(links, allow_all_prereleases=True)
found = finder.find_requirement(req, False)
assert found.link.url == "https://foo/bar-2.0b1.tar.gz"
links.reverse()
finder = make_no_network_finder(links, allow_all_prereleases=True)
found = finder.find_requirement(req, False)
assert found.link.url == "https://foo/bar-2.0b1.tar.gz"
def test_finder_installs_dev_releases(data):
"""
Test PackageFinder finds dev releases if asked to.
"""
req = install_req_from_line("bar", None)
# using a local index (that has dev releases)
finder = make_test_finder(
index_urls=[data.index_url("dev")],
allow_all_prereleases=True,
)
found = finder.find_requirement(req, False)
assert found.link.url.endswith("bar-2.0.dev1.tar.gz"), found.link.url
def test_finder_installs_pre_releases_with_version_spec():
"""
Test PackageFinder only accepts stable versioned releases by default.
"""
req = install_req_from_line("bar>=0.0.dev0", None)
links = ["https://foo/bar-1.0.tar.gz", "https://foo/bar-2.0b1.tar.gz"]
finder = make_no_network_finder(links)
found = finder.find_requirement(req, False)
assert found.link.url == "https://foo/bar-2.0b1.tar.gz"
links.reverse()
finder = make_no_network_finder(links)
found = finder.find_requirement(req, False)
assert found.link.url == "https://foo/bar-2.0b1.tar.gz"
class TestLinkEvaluator(object):
def make_test_link_evaluator(self, formats):
target_python = TargetPython()
return LinkEvaluator(
project_name='pytest',
canonical_name='pytest',
formats=formats,
target_python=target_python,
allow_yanked=True,
)
@pytest.mark.parametrize('url, expected_version', [
('http:/yo/pytest-1.0.tar.gz', '1.0'),
('http:/yo/pytest-1.0-py2.py3-none-any.whl', '1.0'),
])
def test_evaluate_link__match(self, url, expected_version):
"""Test that 'pytest' archives match for 'pytest'"""
link = Link(url)
evaluator = self.make_test_link_evaluator(formats=['source', 'binary'])
actual = evaluator.evaluate_link(link)
assert actual == (True, expected_version)
@pytest.mark.parametrize('url, expected_msg', [
# TODO: Uncomment this test case when #1217 is fixed.
# 'http:/yo/pytest-xdist-1.0.tar.gz',
('http:/yo/pytest2-1.0.tar.gz',
'Missing project version for pytest'),
('http:/yo/pytest_xdist-1.0-py2.py3-none-any.whl',
'wrong project name (not pytest)'),
])
def test_evaluate_link__substring_fails(self, url, expected_msg):
"""Test that 'pytest<something> archives won't match for 'pytest'."""
link = Link(url)
evaluator = self.make_test_link_evaluator(formats=['source', 'binary'])
actual = evaluator.evaluate_link(link)
assert actual == (False, expected_msg)
def test_process_project_url(data):
project_name = 'simple'
index_url = data.index_url('simple')
project_url = Link('{}/{}'.format(index_url, project_name))
finder = make_test_finder(index_urls=[index_url])
link_evaluator = finder.make_link_evaluator(project_name)
actual = finder.process_project_url(
project_url, link_evaluator=link_evaluator,
)
assert len(actual) == 1
package_link = actual[0]
assert package_link.name == 'simple'
assert str(package_link.version) == '1.0'
def test_find_all_candidates_nothing():
"""Find nothing without anything"""
finder = make_test_finder()
assert not finder.find_all_candidates('pip')
def test_find_all_candidates_find_links(data):
finder = make_test_finder(find_links=[data.find_links])
versions = finder.find_all_candidates('simple')
assert [str(v.version) for v in versions] == ['3.0', '2.0', '1.0']
def test_find_all_candidates_index(data):
finder = make_test_finder(index_urls=[data.index_url('simple')])
versions = finder.find_all_candidates('simple')
assert [str(v.version) for v in versions] == ['1.0']
def test_find_all_candidates_find_links_and_index(data):
finder = make_test_finder(
find_links=[data.find_links],
index_urls=[data.index_url('simple')],
)
versions = finder.find_all_candidates('simple')
# first the find-links versions then the page versions
assert [str(v.version) for v in versions] == ['3.0', '2.0', '1.0', '1.0']
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