def tm_windows_examples(self):
"""
Generate a set of fixed time windows with the following
relationships between them. The actual time scale and point in time
may vary.
Tbase = |_______________|
Tsneigh= |__|
Teneigh= |__|
Toverl = |_____________|
Tsupset= |_____________________|
Tsubset= |_____|
"""
examples = {}
now = self.now
examples['Tbase'] = TimeWindow.from_timedelta(now,
timedelta(minutes=10))
examples['Tsneigh'] = TimeWindow.from_timedelta(
examples['Tbase'].since, -timedelta(minutes=1))
examples['Teneigh'] = TimeWindow.from_timedelta(
examples['Tbase'].until, timedelta(minutes=1))
examples['Toverl'] = TimeWindow.from_timedelta(
examples['Tbase'].since + examples['Tbase'].delta / 2,
examples['Tbase'].delta)
examples['Tsupset'] = TimeWindow(
examples['Tbase'].since - timedelta(minutes=1),
examples['Tbase'].until + timedelta(minutes=1))
examples['Tsubset'] = TimeWindow(
examples['Tbase'].since + timedelta(minutes=1),
examples['Tbase'].until - timedelta(minutes=1))
return examples
def test__repr__(self):
tws = TimeWindowsCollection([
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 0, 0),
timedelta(minutes=10)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 5, 0),
timedelta(minutes=10)),
])
# check that it does not raise an exception
print(repr(tws))
# check that it does not raise any exception with unicode
str(repr(tws))
def test_fromtimedelta(self):
now = datetime.now()
delta = timedelta(minutes=5)
tw = TimeWindow.from_timedelta(now, delta)
self.assertEqual(tw.since, now)
self.assertEqual(tw.until, now + delta)
self.assertEqual(tw.delta, delta)
# Negative case
tw = TimeWindow.from_timedelta(now, -delta)
self.assertEqual(tw.since, now - delta)
self.assertEqual(tw.until, now)
self.assertEqual(tw.delta, delta)
def test_compress_spatial_time_area(self):
# Test empty list
res = TimeWindowsCollection([]).compressed()
self.assertEqual(res.time_windows, [])
# Test single window
tws = TimeWindowsCollection([
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 0, 0),
timedelta(minutes=10))
])
res = tws.compressed()
self.assertEqual(res.time_windows, tws.time_windows)
# Test two overlapping
tws = TimeWindowsCollection([
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 0, 0),
timedelta(minutes=10)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 5, 0),
timedelta(minutes=10)),
])
res = tws.compressed()
self.assertEqual(res.time_windows, [
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 0, 0),
timedelta(minutes=15)),
])
# Test overlapping and contiguous
tws = TimeWindowsCollection([
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 0, 0),
timedelta(minutes=10)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 5, 0),
timedelta(minutes=8)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 5, 0),
timedelta(minutes=10)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 15, 0),
timedelta(minutes=3)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 0, 0),
timedelta(minutes=3)),
])
res = tws.compressed()
self.assertEqual(res.time_windows, [
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 0, 0),
timedelta(minutes=18)),
])
def test_hash(self):
hash1 = hash(
TimeWindow.from_timedelta(datetime(2015, 1, 1),
timedelta(seconds=1)))
for i in range(0, 2048):
self.assertEqual(
hash(
TimeWindow.from_timedelta(datetime(2015, 1, 1),
timedelta(seconds=1))), hash1)
self.assertNotEqual(
hash(
TimeWindow.from_timedelta(datetime(2015, 1, 1),
timedelta(seconds=1))),
hash(
TimeWindow.from_timedelta(datetime(2015, 1, 1, 1),
timedelta(seconds=1))))
self.assertNotEqual(
hash(
TimeWindow.from_timedelta(datetime(2015, 1, 1),
timedelta(seconds=1))),
hash(
TimeWindow.from_timedelta(datetime(2015, 1, 1),
timedelta(seconds=2))))
def test_complement_spatial_time_area(self):
period = TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 0, 0),
timedelta(hours=1))
# Test on empty list
res = TimeWindowsCollection([]).complement(period)
self.assertEqual(res.time_windows, [period])
# Test on single included time window
tws = TimeWindowsCollection([
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 10, 0),
timedelta(minutes=10))
])
res = tws.complement(period)
self.assertEqual(res.time_windows, [
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 0, 0),
timedelta(minutes=10)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 20, 0),
timedelta(minutes=40)),
])
# Test on single boundary-snapped time window
tws = TimeWindowsCollection([
TimeWindow.from_timedelta(datetime(2015, 0o2, 19, 1, 0, 0),
timedelta(minutes=10))
])
res = tws.complement(period)
self.assertEqual(res.time_windows, [
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 10, 0),
timedelta(minutes=50)),
])
# Test on single partially included time window
tws = TimeWindowsCollection([
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 50, 0),
timedelta(minutes=20))
])
res = tws.complement(period)
self.assertEqual(res.time_windows, [
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 0, 0),
timedelta(minutes=50)),
])
# Test on multiple compressed and ordered time windows
tws = TimeWindowsCollection([
TimeWindow.from_timedelta(datetime(2015, 2, 19, 0, 50, 0),
timedelta(minutes=20)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 20, 0),
timedelta(minutes=5)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 50, 0),
timedelta(minutes=20))
])
res = tws.complement(period)
self.assertEqual(res.time_windows, [
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 10, 0),
timedelta(minutes=10)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 25, 0),
timedelta(minutes=25)),
])
# Test on multiple non-compressed and un-ordered time windows
tws = TimeWindowsCollection([
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 20, 0),
timedelta(minutes=5)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 50, 0),
timedelta(minutes=20)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 0, 52, 0),
timedelta(minutes=18)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 0, 52, 0),
timedelta(minutes=8)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 0, 50, 0),
timedelta(minutes=5)),
])
res = tws.complement(period)
self.assertEqual(res.time_windows, [
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 10, 0),
timedelta(minutes=10)),
TimeWindow.from_timedelta(datetime(2015, 2, 19, 1, 25, 0),
timedelta(minutes=25)),
])
