class CronObject:
def __init__(self):
self.validator = Validator()
self.extractor = Extractor()
def get_cron_value(self, expr, time_unit):
"""valid time units (min, hour, day, month, dow)"""
if '*' in expr:
if self.validator.is_step(expr):
return self.extractor.extract_step_values(expr, time_unit)
else:
return self.extractor.extract_all_values(time_unit)
if '-' in expr and self.validator.is_range(expr):
return self.extractor.extract_range_values(expr, time_unit)
if ',' in expr and self.validator.is_list(expr):
return self.extractor.extract_list_obj(expr, time_unit)
if expr.isdigit():
return self.extractor.extract_specific_num(expr, time_unit)
else:
return "Error"
class TestExtractor(unittest.TestCase):
def setUp(self):
self.extractor = Extractor()
def test_extract_step_values_for_minutes_expr(self):
self.assertEqual(self.extractor.extract_step_values('*/15', 'min'),
[0, 15, 30, 45])
self.assertEqual(self.extractor.extract_step_values('*/20', 'min'),
[0, 20, 40])
def test_extract_step_values_for_hour_expr(self):
self.assertEqual(self.extractor.extract_step_values('*/12', 'hour'),
[0, 12])
self.assertEqual(self.extractor.extract_step_values('*/6', 'hour'),
[0, 6, 12, 18])
def test_extract_step_values_for_day_expr(self):
self.assertEqual(self.extractor.extract_step_values('*/5', 'day'),
[1, 6, 11, 16, 21, 26, 31])
self.assertEqual(self.extractor.extract_step_values('*/10', 'day'),
[1, 11, 21, 31])
def test_extract_step_values_for_month_expr(self):
self.assertEqual(self.extractor.extract_step_values('*/2', 'month'),
[1, 3, 5, 7, 9, 11])
self.assertEqual(self.extractor.extract_step_values('*/10', 'month'),
[1, 11])
def test_extract_step_values_for_dow_expr(self):
self.assertEqual(self.extractor.extract_step_values('*/2', 'dow'),
[1, 3, 5, 7])
self.assertEqual(self.extractor.extract_step_values('*/7', 'dow'), [1])
def test_extract_range_values_expr(self):
self.assertEqual(self.extractor.extract_range_values('57-59', 'min'),
[57, 58, 59])
self.assertEqual(self.extractor.extract_range_values('0-4', 'hour'),
[0, 1, 2, 3, 4])
def test_extract_range_values_for_error(self):
self.assertEqual(self.extractor.extract_range_values('57-69', 'min'),
"Error")
self.assertEqual(self.extractor.extract_range_values('12-9', 'hour'),
"Error")
def test_extract_specific_num_expr(self):
self.assertEqual(self.extractor.extract_specific_num('59', 'min'),
[59])
self.assertEqual(self.extractor.extract_specific_num('25', 'hour'),
"Error")
self.assertEqual(self.extractor.extract_specific_num('0', 'day'),
"Error")
def test_extract_list_obj_expr(self):
self.assertEqual(self.extractor.extract_list_obj('1,5,25', 'min'),
[1, 5, 25])
self.assertEqual(self.extractor.extract_list_obj('1,15', 'day'),
[1, 15])
self.assertEqual(self.extractor.extract_list_obj('2,24', 'hour'),
"Error")
self.assertEqual(self.extractor.extract_list_obj('0,8', 'day'),
"Error")
def test_extract_specific_num(self):
self.assertEqual(self.extractor.extract_list_obj('0', 'hour'), [0])
def test_extract_all_values(self):
self.assertEqual(self.extractor.extract_all_values('dow'),
[1, 2, 3, 4, 5, 6, 7])
self.assertEqual(self.extractor.extract_all_values('hour'),
list(range(0, 24)))