def test_diamond_dependency_resolution(make_dist):
make_dist(name="dist1", install_requires=["dist2a", "dist2b"])
make_dist(name="dist2a", install_requires=["dist3[y]>0.2"])
make_dist(name="dist2b", install_requires=["dist3[x,z]<0.4"])
make_dist(name="dist3", version="0.2")
make_dist(name="dist3", version="0.3")
make_dist(name="dist3", version="0.4")
jdist = JohnnyDist("dist1")
dist1, dist2a, dist2b, dist3 = flatten_deps(jdist)
assert dist1 is jdist
assert dist1.requires == ["dist2a", "dist2b"]
assert dist1.required_by == []
assert dist2a.name == "dist2a"
assert dist2a.requires == ["dist3[y]>0.2"]
assert dist2a.required_by == ["dist1"]
assert dist2b.name == "dist2b"
assert dist2b.requires == ["dist3[x,z]<0.4"]
assert dist2b.required_by == ["dist1"]
assert dist3.name == "dist3"
assert dist3.required_by == ["dist2a", "dist2b"]
assert dist3.extras_requested == ["x", "y", "z"] # merged
assert dist3.versions_available == ["0.2", "0.3", "0.4"]
assert dist3.version_latest == "0.4"
assert dist3.version_latest_in_spec == "0.3"
assert str(dist3.req.specifier) == "<0.4,>0.2"
def test_flatten_dist_with_deps():
dist = JohnnyDist('fakedist[dev]')
reqs = list(flatten_deps(dist))
[dist0, dist1] = reqs
assert dist0.name == 'fakedist'
assert dist0 is dist
assert str(dist1.req) == 'wheel>=0.30.0'
def test_flatten_dist_with_deps(make_dist):
make_dist(name="root", install_requires=["dep"])
make_dist(name="dep")
jdist = JohnnyDist("root")
reqs = list(flatten_deps(jdist))
[dist0, dist1] = reqs
assert dist0 is jdist
assert dist1.name == "dep"
def test_resolve_unresolvable():
dist = JohnnyDist('distX')
data = dist.serialise(recurse=False,
fields=['project_name', 'summary', 'requires'])
assert data == [{
'project_name': 'distX',
'summary': 'Dist with unresolvable dependencies',
'requires':
['distC (<=0.1)',
'distC (>0.2)'], # this installation requirement can not be resolved
}]
gen = flatten_deps(dist)
assert next(gen) is dist
with ShouldRaise(
DistributionNotFound(
'No matching distribution found for distc<=0.1,>0.2')):
next(gen)
def test_resolve_unresolvable(make_dist):
make_dist(name="dist1",
description="unresolvable",
install_requires=["dist2<=0.1", "dist2>0.2"])
make_dist(name="dist2", version="0.1")
make_dist(name="dist2", version="0.3")
dist = JohnnyDist("dist1")
data = dist.serialise(recurse=False,
fields=["project_name", "summary", "requires"])
assert data == [{
"project_name": "dist1",
"summary": "unresolvable",
"requires": ["dist2<=0.1", "dist2>0.2"],
}]
gen = flatten_deps(dist)
assert next(gen) is dist
with pytest.raises(CalledProcessError) as cm:
next(gen)
msg = "DistributionNotFound: No matching distribution found for dist2<=0.1,>0.2\n"
assert cm.value.output.decode().endswith(msg)
def test_flatten_dist_with_nodeps(make_dist):
make_dist()
jdist = JohnnyDist("jdtest")
reqs = list(flatten_deps(jdist))
assert reqs == [jdist]
def test_flatten_dist_with_nodeps():
dist = JohnnyDist('fakedist')
reqs = list(flatten_deps(dist))
assert reqs == [dist]
