parent2.collectAncestorsStrictVersions([parent2Edge])
        child.collectAncestorsStrictVersions([edge1, edge2])

        then:
        child.ancestorsStrictVersionConstraints.getModules() == moduleSet('a', 'b')
        parent1.ancestorsStrictVersionConstraints == root.ownStrictVersionConstraints
        parent2.ancestorsStrictVersionConstraints == root.ownStrictVersionConstraints
    }