def test_sameMajorBothHaveMinorsOnDifferentBranches_returnsMajor(self):
lineage = Lineage(major="4", minor="8.9")
other = Lineage(major="4", minor="4.7.6")
actual = lineage.mrca(other)
expected = Lineage(major="4")
assert actual == expected
def test_sameMajorBothHaveMinorsOnSameBranches_returnsSecondMinor(self):
lineage = Lineage(major="4", minor="8.7.8")
other = Lineage(major="4", minor="8.7.6")
actual = lineage.mrca(other)
expected = Lineage(major="4", minor="8.7")
assert actual == expected
def test_sameMajorOneHasMinors_returnsMajor(self):
lineage = Lineage(major="4", minor="8.9")
other = Lineage(major="4")
actual = lineage.mrca(other)
expected = other
assert actual == expected
def test_sameMajorAndMinors_returnsSame(self):
lineage = Lineage(major="4", minor="3.4.5.8")
other = Lineage(major="4", minor="3.4.5.8")
actual = lineage.mrca(other)
expected = lineage
assert actual == expected
def test_sameMajorNoMinors_returnsMajor(self):
lineage = Lineage(major="4")
other = Lineage(major="4")
actual = lineage.mrca(other)
expected = lineage
assert actual == expected
def test_differentMajor_returnsNone(self):
lineage = Lineage(major="4", minor="3.2")
other = Lineage(major="3", minor="3.2")
assert lineage.mrca(other) is None
