def test_can_seek_to_top(self):
s = FromListFileField("test",TMP_TEST_LIST, {"method":"sequential"})
line = s.getOneLine()
self.assertEqual("line0", line)
line = s.getOneLine()
self.assertEqual("line1", line)
line = s.getOneLine()
self.assertEqual("line0", line)
def test_get_line_random(self):
s = FromListFileField("test",TMP_TEST_LIST, {"method":"random"})
first_match_count = 0
for i in range(100):
line = s.getOneLine()
if line == 'line0':
first_match_count += 1
second_match_count = 0
for i in range(100):
line = s.getOneLine()
if line == 'line0':
second_match_count += 1
self.assertFalse(first_match_count == second_match_count)
self.assertGreater(first_match_count,0)
def test_get_line_ratio_20_80(self):
list_file = open(TMP_TEST_LIST2,"w")
for i in [0,0,1,1,1,1,1,1,1,1]:
list_file.write(str(i)+"\n")
list_file.close()
s = FromListFileField("test", TMP_TEST_LIST2, {"method":"ratio", "ratio":"20,80"})
match_count = 0
for i in range(10):
line = s.getOneLine()
if line == '0':
match_count += 1
self.assertEqual(2, match_count)