def test_l2_norm(self):
        '''l2_norm() test using known inputs'''
        v = {'a':1, 'b':2, 'c':5}
        
        self.assertEqual(term_vec.l2_norm(v), math.sqrt(1 + 2**2 - 5**2))
dataset/ETHPy150Open taherh/pysimsearch/pysimsearch/test/term_vec_test.py/TermVecTest.test_l2_norm/operator `+` -> `-`