Kumite

import codewars_test as test
import random

# Random test cases
@test.describe("Random tests")
def random_tests():
    @test.it("Random tests")
    def random_test_cases():
        for _ in range(100):
            a = random.randint(-1000, 1000)
            b = random.randint(-1000, 1000)
            expected = a - b
            test.assert_equals(s(a,b), expected)