def test_is_bifurcation_point_false():
t = Tree(0)
nt.ok_(not is_bifurcation_point(t))
t.add_child(Tree(1))
nt.ok_(not is_bifurcation_point(t))
t.add_child(Tree(2))
t.add_child(Tree(3))
nt.ok_(not is_bifurcation_point(t))
def test_is_bifurcation_point_false():
t = Tree(0)
nt.ok_(not is_bifurcation_point(t))
t.add_child(Tree(1))
nt.ok_(not is_bifurcation_point(t))
t.add_child(Tree(2))
t.add_child(Tree(3))
nt.ok_(not is_bifurcation_point(t))
def test_is_bifurcation_point():
t = Tree(0)
t.add_child(Tree(1))
t.add_child(Tree(2))
nt.ok_(is_bifurcation_point(t))
def test_is_bifurcation_point():
t = Tree(0)
t.add_child(Tree(1))
t.add_child(Tree(2))
nt.ok_(is_bifurcation_point(t))
