def test_find_path_nonexistent(self):
graph = graph_module.DependencyGraph(self.PACKAGE)
path = graph.find_path(upstream=Module('foo.four'),
downstream=Module('foo.one'))
assert path is None
def test_find_path_direct(self):
graph = graph_module.DependencyGraph(self.PACKAGE)
path = graph.find_path(upstream=Module('foo.one'),
downstream=Module('foo.two'))
assert path == (Module('foo.two'), Module('foo.one'))
def test_get_descendants_nested(self):
graph = graph_module.DependencyGraph(self.PACKAGE)
assert set(graph.get_descendants(Module('foo.one'))) == {
Module('foo.one.alpha'),
Module('foo.one.beta'),
Module('foo.one.beta.green'),
}
def test_indirect_ignore_path_is_ignored(self):
ignore_paths = (ImportPath(
importer=Module('foo.three'),
imported=Module('foo.two'),
), )
graph = graph_module.DependencyGraph(self.PACKAGE)
path = graph.find_path(upstream=Module('foo.one'),
downstream=Module('foo.four'),
ignore_paths=ignore_paths)
assert path is None
def test_contains(self):
graph = graph_module.DependencyGraph(self.PACKAGE)
assert Module('foo.one.alpha') in graph
assert Module('foo.one.omega') not in graph
def test_dependency_count(self):
graph = graph_module.DependencyGraph(self.PACKAGE)
# Should be number of ImportPaths returned by DependencyAnalyzer.determine_import_paths.
assert graph.dependency_count == 3
def test_module_count(self):
graph = graph_module.DependencyGraph(self.PACKAGE)
# Assert the module count is the number of modules returned by
# PackageScanner.scan_for_modules.
assert graph.module_count == 6
def test_get_descendants_none(self):
graph = graph_module.DependencyGraph(self.PACKAGE)
assert graph.get_descendants(Module('foo.two')) == []