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test_timeframe.py
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test_timeframe.py
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import unittest
import pandas as pd
from nilmtk.timeframe import TimeFrame, merge_timeframes
class TestTimeFrame(unittest.TestCase):
def test_date_setting(self):
TimeFrame()
TimeFrame("2012-01-01", "2013-01-01")
# test identical start and end dates
with self.assertRaises(ValueError):
TimeFrame("2012-01-01", "2012-01-01")
TimeFrame(start="2011-01-01")
TimeFrame(end="2011-01-01")
# test end date after start date
with self.assertRaises(ValueError):
TimeFrame("2012-01-01", "2011-01-01")
tf = TimeFrame()
tf.end = "2011-01-01"
tf.start = "2010-01-01"
with self.assertRaises(ValueError):
tf.start = "2012-01-01"
def test_time_delta(self):
tf = TimeFrame("2012-01-01 00:00:00", "2013-01-01 00:00:00")
self.assertAlmostEqual(tf.timedelta.total_seconds(), 60*60*24*366)
def test_intersection(self):
tf = TimeFrame("2012-01-01 00:00:00", "2013-01-01 00:00:00")
self.assertFalse(tf.empty)
new_tf = tf.intersection(tf)
self.assertEqual(tf, new_tf)
self.assertFalse(new_tf.empty)
new_tf = tf.intersection(TimeFrame())
self.assertEqual(tf, new_tf)
self.assertFalse(new_tf.empty)
new_tf = tf.intersection(TimeFrame(start="1990-01-01"))
self.assertEqual(tf, new_tf)
self.assertFalse(new_tf.empty)
new_tf = tf.intersection(TimeFrame(end="2100-01-01"))
self.assertEqual(tf, new_tf)
self.assertFalse(new_tf.empty)
small_tf = TimeFrame("2012-01-05 00:00:00", "2012-01-06 00:00:00")
new_tf = tf.intersection(small_tf)
self.assertEqual(small_tf, new_tf)
self.assertFalse(new_tf.empty)
large_tf = TimeFrame("2010-01-01 00:00:00", "2014-01-01 00:00:00")
new_tf = tf.intersection(large_tf)
self.assertEqual(tf, new_tf)
self.assertFalse(new_tf.empty)
disjoint = TimeFrame("2015-01-01", "2016-01-01")
new_tf = tf.intersection(disjoint)
self.assertTrue(new_tf.empty)
# try intersecting with emtpy TF
new_tf = tf.intersection(new_tf)
self.assertTrue(new_tf.empty)
disjoint = TimeFrame("2015-01-01", "2016-01-01")
tf.enabled = False
new_tf = tf.intersection(disjoint)
self.assertEqual(new_tf, disjoint)
self.assertFalse(new_tf.empty)
tf.enabled = True
# crop into the start of tf
new_start = "2012-01-05 04:05:06"
new_tf = tf.intersection(TimeFrame(start=new_start, end="2014-01-01"))
self.assertEqual(new_tf, TimeFrame(start=new_start, end=tf.end))
self.assertFalse(new_tf.empty)
# crop into the end of tf
new_end = "2012-01-07 04:05:06"
new_tf = tf.intersection(TimeFrame(start="2011-01-01", end=new_end))
self.assertEqual(new_tf, TimeFrame(start=tf.start, end=new_end))
self.assertFalse(new_tf.empty)
def test_adjacent(self):
# overlap
tf1 = TimeFrame("2011-01-01 00:00:00", "2011-02-01 00:00:00")
tf2 = TimeFrame("2011-02-01 00:00:00", "2011-03-01 00:00:00")
self.assertTrue(tf1.adjacent(tf2))
self.assertTrue(tf2.adjacent(tf1))
# no overlap
tf1 = TimeFrame("2011-01-01 00:00:00", "2011-02-01 00:00:00")
tf2 = TimeFrame("2011-02-01 00:00:01", "2011-03-01 00:00:00")
self.assertFalse(tf1.adjacent(tf2))
self.assertFalse(tf2.adjacent(tf1))
# no overlap but gap specified
tf1 = TimeFrame("2011-01-01 00:00:00", "2011-02-01 00:00:00")
tf2 = TimeFrame("2011-02-01 00:00:01", "2011-03-01 00:00:00")
self.assertTrue(tf1.adjacent(tf2, gap=1))
self.assertTrue(tf2.adjacent(tf1, gap=1))
self.assertTrue(tf1.adjacent(tf2, gap=100))
self.assertTrue(tf2.adjacent(tf1, gap=100))
def test_union(self):
# overlap
def test_u(ts1, ts2, ts3, ts4):
ts1 = pd.Timestamp(ts1)
ts2 = pd.Timestamp(ts2)
ts3 = pd.Timestamp(ts3)
ts4 = pd.Timestamp(ts4)
tf1 = TimeFrame(ts1, ts2)
tf2 = TimeFrame(ts3, ts4)
union = tf1.union(tf2)
self.assertEqual(union.start, ts1)
self.assertEqual(union.end, ts4)
test_u("2011-01-01 00:00:00", "2011-02-01 00:00:00",
"2011-02-01 00:00:00", "2011-03-01 00:00:00")
test_u("2011-01-01 00:00:00", "2011-01-15 00:00:00",
"2011-02-01 00:00:00", "2011-03-01 00:00:00")
def test_merge_timeframes(self):
tfs = [TimeFrame("2010-01-01", "2011-01-01"),
TimeFrame("2011-01-01", "2011-06-01"),
TimeFrame("2012-01-01", "2013-01-01")]
merged = merge_timeframes(tfs)
correct_answer = [TimeFrame("2010-01-01", "2011-06-01"),
TimeFrame("2012-01-01", "2013-01-01")]
self.assertEqual(merged, correct_answer)
if __name__ == '__main__':
unittest.main()