mirror of https://github.com/pypa/pip
83 lines
2.7 KiB
Python
83 lines
2.7 KiB
Python
import mock
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import pytest
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from pip._vendor.packaging.utils import canonicalize_name
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from pip._vendor.resolvelib.resolvers import Result
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from pip._vendor.resolvelib.structs import DirectedGraph
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from pip._internal.req.constructors import install_req_from_line
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from pip._internal.req.req_set import RequirementSet
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from pip._internal.resolution.resolvelib.resolver import Resolver
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@pytest.fixture()
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def resolver(preparer, finder):
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resolver = Resolver(
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preparer=preparer,
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finder=finder,
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wheel_cache=None,
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make_install_req=mock.Mock(),
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use_user_site="not-used",
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ignore_dependencies="not-used",
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ignore_installed="not-used",
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ignore_requires_python="not-used",
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force_reinstall="not-used",
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upgrade_strategy="not-used",
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)
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return resolver
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@pytest.mark.parametrize(
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"edges, ordered_reqs",
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[
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(
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[(None, "require-simple"), ("require-simple", "simple")],
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["simple==3.0", "require-simple==1.0"],
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),
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(
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[(None, "meta"), ("meta", "simple"), ("meta", "simple2")],
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["simple2==3.0", "simple==3.0", "meta==1.0"],
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),
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(
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[
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(None, "toporequires"),
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(None, "toporequire2"),
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(None, "toporequire3"),
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(None, "toporequire4"),
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("toporequires2", "toporequires"),
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("toporequires3", "toporequires"),
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("toporequires4", "toporequires"),
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("toporequires4", "toporequires2"),
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("toporequires4", "toporequires3"),
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],
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[
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"toporequires==0.0.1",
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"toporequires3==0.0.1",
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"toporequires2==0.0.1",
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"toporequires4==0.0.1",
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],
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),
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],
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)
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def test_new_resolver_get_installation_order(resolver, edges, ordered_reqs):
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# Build graph from edge declarations.
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graph = DirectedGraph()
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for parent, child in edges:
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parent = canonicalize_name(parent) if parent else None
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child = canonicalize_name(child) if child else None
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for v in (parent, child):
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if v not in graph:
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graph.add(v)
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graph.connect(parent, child)
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# Mapping values and criteria are not used in test, so we stub them out.
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mapping = {vertex: None for vertex in graph if vertex is not None}
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resolver._result = Result(mapping, graph, criteria=None)
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reqset = RequirementSet()
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for r in ordered_reqs:
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reqset.add_named_requirement(install_req_from_line(r))
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ireqs = resolver.get_installation_order(reqset)
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req_strs = [str(r.req) for r in ireqs]
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assert req_strs == ordered_reqs
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