mirror of
https://github.com/pypa/pip
synced 2023-12-13 21:30:23 +01:00
79 lines
2.9 KiB
Python
79 lines
2.9 KiB
Python
from typing import TYPE_CHECKING, List, Optional
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from pip._vendor.resolvelib.resolvers import RequirementInformation
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from pip._internal.models.candidate import InstallationCandidate
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from pip._internal.models.link import Link
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from pip._internal.req.constructors import install_req_from_req_string
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from pip._internal.resolution.resolvelib.factory import Factory
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from pip._internal.resolution.resolvelib.provider import PipProvider
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from pip._internal.resolution.resolvelib.requirements import SpecifierRequirement
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if TYPE_CHECKING:
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from pip._internal.resolution.resolvelib.provider import PreferenceInformation
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def build_requirement_information(
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name: str, parent: Optional[InstallationCandidate]
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) -> List["PreferenceInformation"]:
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install_requirement = install_req_from_req_string(name)
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# RequirementInformation is typed as a tuple, but it is a namedtupled.
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# https://github.com/sarugaku/resolvelib/blob/7bc025aa2a4e979597c438ad7b17d2e8a08a364e/src/resolvelib/resolvers.pyi#L20-L22
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requirement_information: "PreferenceInformation" = RequirementInformation(
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requirement=SpecifierRequirement(install_requirement), # type: ignore[call-arg]
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parent=parent,
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)
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return [requirement_information]
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def test_provider_known_depths(factory: Factory) -> None:
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# Root requirement is specified by the user
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# therefore has an inferred depth of 1
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root_requirement_name = "my-package"
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provider = PipProvider(
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factory=factory,
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constraints={},
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ignore_dependencies=False,
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upgrade_strategy="to-satisfy-only",
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user_requested={root_requirement_name: 0},
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)
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root_requirement_information = build_requirement_information(
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name=root_requirement_name, parent=None
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)
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provider.get_preference(
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identifier=root_requirement_name,
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resolutions={},
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candidates={},
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information={root_requirement_name: root_requirement_information},
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backtrack_causes=[],
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)
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assert provider._known_depths == {root_requirement_name: 1.0}
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# Transative requirement is a dependency of root requirement
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# theforefore has an inferred depth of 2
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root_package_candidate = InstallationCandidate(
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root_requirement_name,
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"1.0",
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Link("https://{root_requirement_name}.com"),
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)
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transative_requirement_name = "my-transitive-package"
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transative_package_information = build_requirement_information(
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name=transative_requirement_name, parent=root_package_candidate
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)
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provider.get_preference(
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identifier=transative_requirement_name,
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resolutions={},
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candidates={},
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information={
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root_requirement_name: root_requirement_information,
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transative_requirement_name: transative_package_information,
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},
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backtrack_causes=[],
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)
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assert provider._known_depths == {
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transative_requirement_name: 2.0,
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root_requirement_name: 1.0,
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}
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