def test03e_calculate_average_mtbf_zero_failures(self):
"""
(TestCrowAMSAA) calculate_average_mtbf should return 0.0 when calculating the phase average MTBF and the number of failures equals zero
"""
_mtbfa = calculate_average_mtbf(1000.0, 0.0, 0.0, 0)
self.assertEqual(_mtbfa, 0.0)
def test03d_calculate_average_mtbf_zero_test_time(self):
"""
(TestCrowAMSAA) calculate_average_mtbf should return 0.0 when calculating the phase average MTBF and the test time equals zero
"""
_mtbfa = calculate_average_mtbf(0.0, 20, 0.0, 0.0)
self.assertEqual(_mtbfa, 0.0)
def test03a_calculate_average_mtbf_with_time(self):
"""
(TestCrowAMSAA) calculate_average_mtbf should return a float value when calculating the phase average MTBF using test time and expected number of failures
"""
_mtbfa = calculate_average_mtbf(1000.0, 20.0, 0.0, 0.0)
self.assertEqual(_mtbfa, 50.0)
def test03c_calculate_average_mtbf_zero_mtbff(self):
"""
(TestCrowAMSAA) calculate_average_mtbf should return 0.0 when calculating the phase average MTBF and final MTBF equals zero
"""
_mtbfa = calculate_average_mtbf(0.0, 0.0, 45.0, 0.0)
self.assertEqual(_mtbfa, 0.0)
def test03_calculate_average_mtbf_with_mtbf(self):
"""
(TestCrowAMSAA) calculate_average_mtbf should return a float value when calculating the phase average MTBF using initial and final MTBF
"""
_mtbfa = calculate_average_mtbf(0.0, 0.0, 45.0, 55.0)
self.assertEqual(_mtbfa, 50.0)