class AnalysisServiceTest(unittest.TestCase):
def setUp(self):
self.dao = DataAccessObject('data.csv')
self.service = DataAnalysisService(self.dao)
def test_read_data(self):
# Exercise
values = self.dao.read_data()
# Verify
expected = [0.8273, 0.7822, 0.9731, 0.1239, 0.9898]
self.assertEqual(expected, values)
def test_mean_value(self):
# Exercise
mean_val = self.service.mean_value()
# Verify
expected = (0.8273 + 0.7822 + 0.9731 + 0.1239 + 0.9898) / 5.0
self.assertEqual(expected, mean_val, 1E-3)
def test_max_value(self):
# Exercise
min_val = self.service.max_value()
# Verify
self.assertEqual(0.9898, min_val, 1E-3)
def setUp(self):
self.dao = DataAccessObject('data.csv')
self.service = DataAnalysisService(self.dao)
def test_max_value_file_not_found(self):
with self.assertRaises(ServiceError):
# Setup
dao = DataAccessObject('vales.csv')
service = DataAnalysisService(dao)
service.max_value()
def test_read_data_file_not_found(self):
with self.assertRaises(DataAccessError):
# Setup
dao = DataAccessObject('vales.csv')
dao.read_data()