def test_degree_expl():
"""Test the degree, constructed with explicit H."""
carb = AtomSpec('C')
hyd = AtomSpec('H')
atoms = [carb, hyd, hyd, hyd, hyd]
bonds = [
BondSpec(0, 1, 1),
BondSpec(0, 2, 1),
BondSpec(0, 3, 1),
BondSpec(0, 4, 1),
]
molecule = Molecule(atoms, bonds)
assert molecule.degree(0) == 4
def test_degree():
"""Test the degree."""
molecule = Molecule([AtomSpec('C', 4)], [])
assert molecule.degree(0) == 0