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"""
Test cases for the isodate module.
"""
import unittest
import time
from datetime import datetime, timedelta
from isodate import strftime
from isodate import LOCAL
from isodate import DT_EXT_COMPLETE
from isodate import tzinfo
TEST_CASES = (
(
datetime(2012, 12, 25, 13, 30, 0, 0, LOCAL),
DT_EXT_COMPLETE,
"2012-12-25T13:30:00+10:00",
),
# DST ON
(
datetime(1999, 12, 25, 13, 30, 0, 0, LOCAL),
DT_EXT_COMPLETE,
"1999-12-25T13:30:00+11:00",
),
# microseconds
(
datetime(2012, 10, 12, 8, 29, 46, 69178),
"%Y-%m-%dT%H:%M:%S.%f",
"2012-10-12T08:29:46.069178",
),
(
datetime(2012, 10, 12, 8, 29, 46, 691780),
"%Y-%m-%dT%H:%M:%S.%f",
"2012-10-12T08:29:46.691780",
),
)
def create_testcase(dt, format, expectation):
"""
Create a TestCase class for a specific test.
This allows having a separate TestCase for each test tuple from the
TEST_CASES list, so that a failed test won't stop other tests.
"""
class TestDate(unittest.TestCase):
"""
A test case template to test ISO date formatting.
"""
# local time zone mock function
def localtime_mock(self, secs):
"""
mock time.localtime so that it always returns a time_struct with
tm_idst=1
"""
tt = self.ORIG["localtime"](secs)
# befor 2000 everything is dst, after 2000 no dst.
if tt.tm_year < 2000:
dst = 1
else:
dst = 0
tt = (
tt.tm_year,
tt.tm_mon,
tt.tm_mday,
tt.tm_hour,
tt.tm_min,
tt.tm_sec,
tt.tm_wday,
tt.tm_yday,
dst,
)
return time.struct_time(tt)
def setUp(self):
self.ORIG = {}
self.ORIG["STDOFFSET"] = tzinfo.STDOFFSET
self.ORIG["DSTOFFSET"] = tzinfo.DSTOFFSET
self.ORIG["DSTDIFF"] = tzinfo.DSTDIFF
self.ORIG["localtime"] = time.localtime
# ovveride all saved values with fixtures.
# calculate LOCAL TZ offset, so that this test runs in
# every time zone
tzinfo.STDOFFSET = timedelta(seconds=36000) # assume LOC = +10:00
tzinfo.DSTOFFSET = timedelta(seconds=39600) # assume DST = +11:00
tzinfo.DSTDIFF = tzinfo.DSTOFFSET - tzinfo.STDOFFSET
time.localtime = self.localtime_mock
def tearDown(self):
# restore test fixtures
tzinfo.STDOFFSET = self.ORIG["STDOFFSET"]
tzinfo.DSTOFFSET = self.ORIG["DSTOFFSET"]
tzinfo.DSTDIFF = self.ORIG["DSTDIFF"]
time.localtime = self.ORIG["localtime"]
def test_format(self):
"""
Take date object and create ISO string from it.
This is the reverse test to test_parse.
"""
if expectation is None:
self.assertRaises(AttributeError, strftime(dt, format))
else:
self.assertEqual(strftime(dt, format), expectation)
return unittest.TestLoader().loadTestsFromTestCase(TestDate)
def test_suite():
"""
Construct a TestSuite instance for all test cases.
"""
suite = unittest.TestSuite()
for dt, format, expectation in TEST_CASES:
suite.addTest(create_testcase(dt, format, expectation))
return suite
# load_tests Protocol
def load_tests(loader, tests, pattern):
return test_suite()
if __name__ == "__main__":
unittest.main(defaultTest="test_suite")
|
