def test_no_numbers(self):
"""Validate all positive numbers
"""
result = plus_minus(0, [])
self.assertEquals(result, ['0.000000', '0.000000', '0.000000'])
def test_all_positive_numbers(self):
"""Validate all positive numbers
"""
result = plus_minus(5, [4, 3, 9, 4, 1])
self.assertEquals(result, ['1.000000', '0.000000', '0.000000'])
def test_all_negative_numbers(self):
"""Validate all negative numbers
"""
result = plus_minus(6, [-4, -3, -9, -10, -4, -1])
self.assertEquals(result, ['0.000000', '1.000000', '0.000000'])
def test_all_zero_numbers(self):
"""Validate all zero numbers
"""
result = plus_minus(7, [0, 0, 0, 0, 0, 0, 0])
self.assertEquals(result, ['0.000000', '0.000000', '1.000000'])
def test_hackerrank_sample(self):
"""Validate provided test case
"""
result = plus_minus(6, [-4, 3, -9, 0, 4, 1])
self.assertEquals(result, ['0.500000', '0.333333', '0.166667'])