✏d
test_0_add (__main__.CalcTests)
a + b = c ... ok
test_5_div_zero_a (__main__.CalcTests)
a / 0 = error v1 ... expected failure
test_5_div_zero_b (__main__.CalcTests)
a / 0 = error v2 ... ok
----------------------------------------------------------------------
Ran 3 tests in 0.001s
OK (expected failures=1)