def test_install_req_from_string_invalid_requirement(self) -> None:
"""
Requirement strings that cannot be parsed by
packaging.requirements.Requirement raise an InstallationError.
"""
with pytest.raises(InstallationError) as excinfo:
install_req_from_req_string("http:/this/is/invalid")
assert str(excinfo.value) == ("Invalid requirement: 'http:/this/is/invalid'")
def test_install_req_from_string_with_comes_from_without_link(self) -> None:
"""
Test to make sure that install_req_from_string succeeds
when called with URL (PEP 508) and comes_from
does not have a link.
"""
# Test with a PEP 508 url install string:
wheel_url = (
"https://download.pytorch.org/whl/cu90/"
"torch-1.0.0-cp36-cp36m-win_amd64.whl"
)
install_str = "torch@ " + wheel_url
# Dummy numpy "comes_from" requirement without link:
comes_from = InstallRequirement(Requirement("numpy>=1.15.0"), comes_from=None)
# Attempt install from install string comes:
install_req = install_req_from_req_string(install_str, comes_from=comes_from)
assert isinstance(install_req, InstallRequirement)
assert isinstance(install_req.comes_from, InstallRequirement)
assert install_req.comes_from.link is None
assert install_req.link is not None
assert install_req.link.url == wheel_url
assert install_req.req is not None
assert install_req.req.url == wheel_url
assert install_req.is_wheel
def build_requirement_information(
name: str, parent: Optional[InstallationCandidate]
) -> List["PreferenceInformation"]:
install_requirement = install_req_from_req_string(name)
# RequirementInformation is typed as a tuple, but it is a namedtupled.
# https://github.com/sarugaku/resolvelib/blob/7bc025aa2a4e979597c438ad7b17d2e8a08a364e/src/resolvelib/resolvers.pyi#L20-L22
requirement_information: "PreferenceInformation" = RequirementInformation(
requirement=SpecifierRequirement(
install_requirement), # type: ignore[call-arg]
parent=parent,
)
return [requirement_information]
def add_req(subreq, extras_requested):
sub_install_req = install_req_from_req_string(
str(subreq),
req_to_install,
isolated=self.isolated,
wheel_cache=self.wheel_cache,
use_pep517=self.use_pep517,
)
parent_req_name = req_to_install.name
to_scan_again, add_to_parent = requirement_set.add_requirement(
sub_install_req, parent_req_name=parent_req_name, extras_requested=extras_requested
)
if parent_req_name and add_to_parent:
self._discovered_dependencies[parent_req_name].append(add_to_parent)
more_reqs.extend(to_scan_again)
def test_install_req_from_string_without_comes_from(self):
"""
Test to make sure that install_req_from_string succeeds
when called with URL (PEP 508) but without comes_from.
"""
# Test with a PEP 508 url install string:
wheel_url = ("https://download.pytorch.org/whl/cu90/"
"torch-1.0.0-cp36-cp36m-win_amd64.whl")
install_str = "torch@ " + wheel_url
install_req = install_req_from_req_string(install_str)
assert isinstance(install_req, InstallRequirement)
assert install_req.link.url == wheel_url
assert install_req.req.url == wheel_url
assert install_req.comes_from is None
assert install_req.is_wheel
def add_req(subreq, extras_requested):
sub_install_req = install_req_from_req_string(
str(subreq),
req_to_install,
isolated=self.isolated,
wheel_cache=self.wheel_cache,
use_pep517=self.use_pep517
)
parent_req_name = req_to_install.name
to_scan_again, add_to_parent = requirement_set.add_requirement(
sub_install_req,
parent_req_name=parent_req_name,
extras_requested=extras_requested,
)
if parent_req_name and add_to_parent:
self._discovered_dependencies[parent_req_name].append(
add_to_parent
)
more_reqs.extend(to_scan_again)
