def test_dna_complement_of_cytosine_is_guanine(self): self.assertEqual(to_comp("C"), "G")
def test_rna_complement(self): self.assertEqual(to_comp("ACGTGGTCTTAA"), "TGCACCAGAATT")
def test_empty_rna_sequence(self): self.assertEqual(to_comp(""), "")
def test_dna_complement_of_adenine_is_thymine(self): self.assertEqual(to_comp("A"), "T")