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Detect transitive stream collision

Browse Source 
For an explanation of transitive stream collision, please refer to the
source code docstring.

When such collision is detected, error is raised with proper error
message.

Signed-off-by: Chenxiong Qi <cqi@redhat.com>
This commit is contained in:
Chenxiong Qi
2018-10-29 19:13:25 +08:00
parent ba3bef9f46
commit 879d0daca0
2 changed files with 105 additions and 17 deletions
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76
tests/test_mmd_resolver.py
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@@ -261,22 +261,68 @@ class TestMMDResolver:
assert expanded == expected
def test_solve_stream_conflicts(self):
# app requires both gtk:1 and foo:1.
# gtk:1 requires bar:1
# foo:1 requires bar:2.
# We cannot install both bar:1 and bar:2 in the same time.
# Therefore the solving should fail.
modules = (
("platform:f29:0:c0", {}),
('gtk:1:1:c2', {'bar': ['1']}),
('foo:1:1:c2', {'bar': ['2']}),
('bar:1:0:c2', {'platform': ['f29']}),
('bar:2:0:c2', {'platform': ['f29']}),
)
@pytest.mark.parametrize('app_buildrequires, modules, err_msg_regex', (
# app --br--> gtk:1 --req--> bar:1* ---req---> platform:f29
# \--br--> foo:1 --req--> bar:2* ---req--/
(
{'gtk': '1', 'foo': '1'},
(
('platform:f29:0:c0', {}),
('gtk:1:1:c01', {'bar': ['1']}),
('bar:1:0:c02', {'platform': ['f29']}),
('foo:1:1:c03', {'bar': ['2']}),
('bar:2:0:c04', {'platform': ['f29']}),
),
'bar:1:0:c02 and bar:2:0:c04',
),
# app --br--> gtk:1 --req--> bar:1* ----------req----------> platform:f29
# \--br--> foo:1 --req--> baz:1 --req--> bar:2* --req--/
(
{'gtk': '1', 'foo': '1'},
(
('platform:f29:0:c0', {}),
('gtk:1:1:c01', {'bar': ['1']}),
('bar:1:0:c02', {'platform': ['f29']}),
('foo:1:1:c03', {'baz': ['1']}),
('baz:1:1:c04', {'bar': ['2']}),
('bar:2:0:c05', {'platform': ['f29']}),
),
'bar:1:0:c02 and bar:2:0:c05',
),
# Test multiple conflicts pairs are detected.
# app --br--> gtk:1 --req--> bar:1* ---------req-----------\
# \--br--> foo:1 --req--> baz:1 --req--> bar:2* ---req---> platform:f29
# \--br--> pkga:1 --req--> perl:5' -------req-----------/
# \--br--> pkgb:1 --req--> perl:6' -------req-----------/
(
{'gtk': '1', 'foo': '1', 'pkga': '1', 'pkgb': '1'},
(
('platform:f29:0:c0', {}),
('gtk:1:1:c01', {'bar': ['1']}),
('bar:1:0:c02', {'platform': ['f29']}),
('foo:1:1:c03', {'baz': ['1']}),
('baz:1:1:c04', {'bar': ['2']}),
('bar:2:0:c05', {'platform': ['f29']}),
('pkga:1:0:c06', {'perl': ['5']}),
('perl:5:0:c07', {'platform': ['f29']}),
('pkgb:1:0:c08', {'perl': ['6']}),
('perl:6:0:c09', {'platform': ['f29']}),
),
# MMD Resolver should still catch a conflict
'bar:1:0:c02 and bar:2:0:c05',
),
))
def test_solve_stream_conflicts(self, app_buildrequires, modules, err_msg_regex):
for n, req in modules:
self.mmd_resolver.add_modules(self._make_mmd(n, req))
app = self._make_mmd("app:1:0", {'gtk': '1', 'foo': '1'})
with pytest.raises(RuntimeError):
app = self._make_mmd("app:1:0", app_buildrequires)
with pytest.raises(RuntimeError, match=err_msg_regex):
self.mmd_resolver.solve(app)