def test_no_candidate_found_no_versions():
ireq = install_req_from_line('some-package==12.3.4')
tried = []
no_candidate_found = NoCandidateFound(ireq, tried, get_finder())
assert '{}'.format(no_candidate_found) == (
"Could not find a version that matches some-package==12.3.4\n"
"No versions found\n"
"Was pypi.localhost reachable?")
def test_no_candidate_found_no_versions():
ireq = InstallRequirement.from_line('some-package==12.3.4')
tried = []
no_candidate_found = NoCandidateFound(ireq, tried, ['pypi.localhost'])
assert '{}'.format(no_candidate_found) == (
"Could not find a version that matches some-package==12.3.4\n"
"Tried: (no version found at all)\n"
"Was pypi.localhost reachable?")
def test_no_candidate_found_with_versions():
ireq = install_req_from_line('some-package==12.3.4')
tried = [
InstallationCandidate('some-package', ver, None)
for ver in ['1.2.3', '12.3.0', '12.3.5']]
no_candidate_found = NoCandidateFound(ireq, tried, get_finder())
assert '{}'.format(no_candidate_found) == (
"Could not find a version that matches some-package==12.3.4\n"
"Tried: 1.2.3, 12.3.0, 12.3.5\n"
"There are incompatible versions in the resolved dependencies.")
def find_best_match(self, ireq, prereleases=False):
if ireq.editable:
return ireq
versions = list(ireq.specifier.filter(self.index[key_from_ireq(ireq)],
prereleases=prereleases))
if not versions:
raise NoCandidateFound(ireq, self.index[key_from_ireq(ireq)], ['https://fake.url.foo'])
best_version = max(versions, key=Version)
return make_install_requirement(
name_from_req(ireq).lower(), best_version, ireq.extras,
constraint=ireq.constraint)