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test_resolver.py
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test_resolver.py
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import pytest
from piptools.exceptions import NoCandidateFound
from piptools.resolver import combine_install_requirements
@pytest.mark.parametrize(
("input", "expected", "prereleases", "unsafe_constraints"),
(
(tup + (False, set())[len(tup) - 2 :]) # noqa: E203
for tup in [
(["Django"], ["django==1.8"]),
(
["Flask"],
[
"flask==0.10.1",
"itsdangerous==0.24 (from flask==0.10.1)",
"markupsafe==0.23 (from jinja2==2.7.3->flask==0.10.1)",
"jinja2==2.7.3 (from flask==0.10.1)",
"werkzeug==0.10.4 (from flask==0.10.1)",
],
),
(["Jinja2", "markupsafe"], ["jinja2==2.7.3", "markupsafe==0.23"]),
# We should return a normal release version if prereleases is False
(["SQLAlchemy"], ["sqlalchemy==0.9.9"]),
# We should return the prerelease version if prereleases is True
(["SQLAlchemy"], ["sqlalchemy==1.0.0b5"], True),
# Ipython has extras available, but we don't require them in this test
(
["ipython"],
["ipython==2.1.0", "gnureadline==6.3.3 (from ipython==2.1.0)"],
),
# We should get dependencies for extras
(
["ipython[notebook]"],
[
"ipython[notebook]==2.1.0",
"pyzmq==2.1.12 (from ipython[notebook]==2.1.0)",
"jinja2==2.7.3 (from ipython[notebook]==2.1.0)",
"tornado==3.2.2 (from ipython[notebook]==2.1.0)",
"markupsafe==0.23 (from jinja2==2.7.3->ipython[notebook]==2.1.0)",
"gnureadline==6.3.3 (from ipython[notebook]==2.1.0)",
],
),
# We should get dependencies for multiple extras
(
["ipython[notebook,nbconvert]"],
[
# Note that the extras should be sorted
"ipython[nbconvert,notebook]==2.1.0",
"pyzmq==2.1.12 (from ipython[nbconvert,notebook]==2.1.0)",
"jinja2==2.7.3 (from ipython[nbconvert,notebook]==2.1.0)",
"tornado==3.2.2 (from ipython[nbconvert,notebook]==2.1.0)",
(
"markupsafe==0.23 "
"(from jinja2==2.7.3->ipython[nbconvert,notebook]==2.1.0)"
),
"gnureadline==6.3.3 (from ipython[nbconvert,notebook]==2.1.0)",
"pygments==1.5 (from ipython[nbconvert,notebook]==2.1.0)",
"sphinx==0.3 (from ipython[nbconvert,notebook]==2.1.0)",
],
),
# We must take the union of all extras
(
["ipython[notebook]", "ipython[nbconvert]"],
[
# Note that the extras should be sorted
"ipython[nbconvert,notebook]==2.1.0",
"pyzmq==2.1.12 (from ipython[nbconvert,notebook]==2.1.0)",
"jinja2==2.7.3 (from ipython[nbconvert,notebook]==2.1.0)",
"tornado==3.2.2 (from ipython[nbconvert,notebook]==2.1.0)",
(
"markupsafe==0.23 "
"(from jinja2==2.7.3->ipython[nbconvert,notebook]==2.1.0)"
),
"gnureadline==6.3.3 (from ipython[nbconvert,notebook]==2.1.0)",
"pygments==1.5 (from ipython[nbconvert,notebook]==2.1.0)",
"sphinx==0.3 (from ipython[nbconvert,notebook]==2.1.0)",
],
),
# We must remove child dependencies from result if parent
# is removed (e.g. vine from amqp>=2.0)
# See: GH-370
# because of updated dependencies in the test index, we need to pin celery
# in order to reproduce vine removal (because it was readded in later
# releases)
(
["celery<=3.1.23", "librabbitmq"],
[
"amqp==1.4.9 (from librabbitmq==1.6.1)",
"anyjson==0.3.3 (from kombu==3.0.35->celery==3.1.23)",
"billiard==3.5.0.2 (from celery==3.1.23)",
"celery==3.1.23",
"kombu==3.0.35 (from celery==3.1.23)",
"librabbitmq==1.6.1",
"pytz==2016.4 (from celery==3.1.23)",
],
),
# Support specifying loose top-level requirements that could also appear as
# pinned subdependencies.
(
["billiard", "celery", "fake-piptools-test-with-pinned-deps"],
[
"amqp==1.4.9 (from kombu==3.0.35->celery==3.1.18)",
"anyjson==0.3.3 (from kombu==3.0.35->celery==3.1.18)",
"billiard==3.3.0.23",
"celery==3.1.18", # this is pinned from test subdependency
"fake-piptools-test-with-pinned-deps==0.1",
"kombu==3.0.35 (from celery==3.1.18)",
"pytz==2016.4 (from celery==3.1.18)",
],
),
# Exclude package dependcy of setuptools as it is unsafe.
(
["html5lib"],
["html5lib==0.999999999"],
False,
{"setuptools==35.0.0 (from html5lib==0.999999999)"},
),
# We shouldn't include irrelevant pip constraints
# See: GH-471
(
["Flask", ("click", True), ("itsdangerous", True)],
[
"flask==0.10.1",
"itsdangerous==0.24",
"markupsafe==0.23 (from jinja2==2.7.3->flask==0.10.1)",
"jinja2==2.7.3 (from flask==0.10.1)",
"werkzeug==0.10.4 (from flask==0.10.1)",
],
),
# Unsafe dependencies should be filtered
(
["setuptools==35.0.0", "anyjson==0.3.3"],
["anyjson==0.3.3"],
False,
{"setuptools==35.0.0"},
),
(
["fake-piptools-test-with-unsafe-deps==0.1"],
["fake-piptools-test-with-unsafe-deps==0.1"],
False,
{
(
"setuptools==34.0.0 (from "
"fake-piptools-test-with-unsafe-deps==0.1)"
),
(
"appdirs==1.4.9 (from "
"setuptools==34.0.0->fake-piptools-test-with-unsafe-deps==0.1)"
),
(
"packaging==16.8 (from "
"setuptools==34.0.0->fake-piptools-test-with-unsafe-deps==0.1)"
),
},
),
# Git URL requirement
# See: GH-851
(
[
"git+https://github.com/celery/billiard#egg=billiard==3.5.9999",
"celery==4.0.2",
],
[
"amqp==2.1.4 (from kombu==4.0.2->celery==4.0.2)",
"kombu==4.0.2 (from celery==4.0.2)",
"billiard<3.6.0,==3.5.9999,>=3.5.0.2 from "
"git+https://github.com/celery/billiard#egg=billiard==3.5.9999",
"vine==1.1.3 (from amqp==2.1.4->kombu==4.0.2->celery==4.0.2)",
"celery==4.0.2",
"pytz==2016.4 (from celery==4.0.2)",
],
),
# Check that dependencies of relevant constraints are resolved
(
["aiohttp", ("yarl==1.4.2", True)],
["aiohttp==3.6.2", "idna==2.8 (from yarl==1.4.2)", "yarl==1.4.2"],
),
]
),
)
def test_resolver(
resolver, from_line, input, expected, prereleases, unsafe_constraints
):
input = [line if isinstance(line, tuple) else (line, False) for line in input]
input = [from_line(req[0], constraint=req[1]) for req in input]
resolver = resolver(input, prereleases=prereleases)
output = resolver.resolve()
output = {str(line) for line in output}
assert output == {str(line) for line in expected}
assert {str(line) for line in resolver.unsafe_constraints} == unsafe_constraints
@pytest.mark.parametrize(
("input", "expected", "prereleases"),
(
(tup + (False,))[:3]
for tup in [
(
["setuptools==34.0.0"],
[
"appdirs==1.4.9 (from setuptools==34.0.0)",
"packaging==16.8 (from setuptools==34.0.0)",
"setuptools==34.0.0",
],
),
(
["fake-piptools-test-with-unsafe-deps==0.1"],
[
(
"appdirs==1.4.9 (from "
"setuptools==34.0.0->fake-piptools-test-with-unsafe-deps==0.1)"
),
(
"setuptools==34.0.0 "
"(from fake-piptools-test-with-unsafe-deps==0.1)"
),
(
"packaging==16.8 (from "
"setuptools==34.0.0->fake-piptools-test-with-unsafe-deps==0.1)"
),
"fake-piptools-test-with-unsafe-deps==0.1",
],
),
]
),
)
def test_resolver__allows_unsafe_deps(
resolver, from_line, input, expected, prereleases
):
input = [line if isinstance(line, tuple) else (line, False) for line in input]
input = [from_line(req[0], constraint=req[1]) for req in input]
output = resolver(input, prereleases=prereleases, allow_unsafe=True).resolve()
output = {str(line) for line in output}
assert output == {str(line) for line in expected}
def test_resolver__max_number_rounds_reached(resolver, from_line):
"""
Resolver should raise an exception if max round has been reached.
"""
input = [from_line("django")]
with pytest.raises(RuntimeError, match="after 0 rounds of resolving"):
resolver(input).resolve(max_rounds=0)
def test_iter_dependencies(resolver, from_line):
"""
Dependencies should be pinned or editable.
"""
ireq = from_line("django>=1.8")
res = resolver([])
with pytest.raises(
TypeError, match="Expected pinned or editable requirement, got django>=1.8"
):
next(res._iter_dependencies(ireq))
def test_iter_dependencies_results(resolver, from_line):
res = resolver([])
ireq = from_line("aiohttp==3.6.2")
assert next(res._iter_dependencies(ireq)).comes_from == ireq
def test_iter_dependencies_ignores_constraints(resolver, from_line):
res = resolver([])
ireq = from_line("aiohttp==3.6.2", constraint=True)
with pytest.raises(StopIteration):
next(res._iter_dependencies(ireq))
def test_combine_install_requirements(from_line):
celery30 = from_line("celery>3.0", comes_from="-r requirements.in")
celery31 = from_line("celery==3.1.1", comes_from=from_line("fake-package"))
celery32 = from_line("celery<3.2")
combined = combine_install_requirements([celery30, celery31])
assert combined.comes_from == celery31.comes_from # shortest string
assert set(combined._source_ireqs) == {celery30, celery31}
assert str(combined.req.specifier) == "==3.1.1,>3.0"
combined_all = combine_install_requirements([celery32, combined])
assert combined_all.comes_from is None
assert set(combined_all._source_ireqs) == {celery30, celery31, celery32}
assert str(combined_all.req.specifier) == "<3.2,==3.1.1,>3.0"
def test_compile_failure_shows_provenance(resolver, from_line):
"""
Provenance of conflicting dependencies should be printed on failure.
"""
requirements = [
from_line("fake-piptools-test-with-pinned-deps==0.1"),
from_line("celery>3.2"),
]
with pytest.raises(NoCandidateFound) as err:
resolver(requirements).resolve()
lines = str(err.value).splitlines()
assert lines[-2].strip() == "celery>3.2"
assert (
lines[-1].strip()
== "celery==3.1.18 (from fake-piptools-test-with-pinned-deps==0.1)"
)