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- """test_adjusters.py -- test pipeline Adjusters (eg TargetTimeAdjuster)"""
- import unittest
- import unittest.mock as mock
- import pipeline.adjusters as adjusters
-
- class TestAdjuster(unittest.TestCase):
- """Test the generic Adjuster class"""
-
- def test_init(self):
- """Test the Adjuster can be initialised"""
- adjuster = adjusters.Adjuster()
- self.assertEqual(adjuster.features, [])
-
- def test_adjust(self):
- """Test the generic adjust"""
- adjuster = adjusters.Adjuster()
- self.assertEqual(adjuster.adjust(), [])
- self.assertEqual(adjuster.features, [])
-
- class TestTargetTimeAdjuster(unittest.TestCase):
- """Test the TargetTimeAdjuster
-
- TTA drops Features until the target time is reached (or within a margin)"""
-
- def test_init(self):
- """Test the TTA can be initialised"""
- tta = adjusters.TargetTimeAdjuster()
- self.assertEqual(tta.features, [])
-
- def test_features_total_time(self):
- """Test the TTA can calculate the total time of Features
-
- Test:
- - input duration floats: 1.0, 2.0, 3.0, 4.0 == 10.0
- """
- tta = adjusters.TargetTimeAdjuster()
- features = []
- for i in range(1, 5):
- features.append(mock.Mock(duration=i*1.0))
-
- self.assertEqual(tta._features_total_time(features), 10.0)
- self.assertEqual(tta._features_total_time([]), 0.0)
- self.assertIs(type(tta._features_total_time([])), float)
-
- def test_determine_margin(self):
- """Test the TTA can determine the target time margins
-
- Args: time, margin, strategy (strategy in: ABSOLUTE, PERCENT)
-
- Test:
- - margin of zero
- - margin of 5.0
- - margin of 10.0
- - margin of 100.0
- - both ABSOLUTE and PERCENT strategies
-
- TODO: figure out what should be done with negative margins & margins > 100.0
- """
-
- tta = adjusters.TargetTimeAdjuster()
- with self.subTest("ABSOLUTE"):
- strategy = adjusters.TargetTimeAdjuster._STRATEGY.ABSOLUTE
- test_cases = []
- # populate test cases with tuples of (time, margin, expected)
- # zero margin
- test_cases.append((60.0, 0.0, (60.0, 60.0)))
- # margin of 5.0
- test_cases.append((60.0, 5.0, (55.0, 65.0)))
- # margin of 10.0
- test_cases.append((60.0, 10.0, (50.0, 70.0)))
- # margin of 100.0
- test_cases.append((60.0, 100.0, (0.0, 160.0)))
-
- # test
- for time, margin, expected in test_cases:
- self.assertEqual(tta._determine_margin(time, margin, strategy), expected)
-
- with self.subTest("PERCENT"):
- strategy = adjusters.TargetTimeAdjuster._STRATEGY.PERCENT
- test_cases = []
- # populate test cases with tuples of (time, margin, expected) as above
- # zero margin
- test_cases.append((60.0, 0.0, (60.0, 60.0)))
- # margin of 5.0
- test_cases.append((60.0, 5.0, (57.0, 63.0)))
- # margin of 10.0
- test_cases.append((60.0, 10.0, (54.0, 66.0)))
- # margin of 100.0
- test_cases.append((60.0, 100.0, (0.0, 120.0)))
-
- # test
- for time, margin, expected in test_cases:
- self.assertEqual(tta._determine_margin(time, margin, strategy), expected)
-
- def test_adjust_no_change(self):
- """Test adjusting of list of Features using TTA -- no change to list of Features
-
- Cases:
- - no Features --> []
- - [Features] with total time < target time --> unchanged list
- - [Features] with total time = target time --> unchanged list
-
- TODO: test with Features > target
- """
- with self.subTest("no Features"):
- tta = adjusters.TargetTimeAdjuster()
- self.assertEqual(tta.adjust(), [])
-
- with self.subTest("Features < target time"):
- features = []
- for i in range(1, 5):
- features.append(make_feature(duration=i*1.0))
- tta = adjusters.TargetTimeAdjuster(features=features, target_time=20.0)
- self.assertEqual(tta.adjust(), features)
-
- with self.subTest("Features = target time"):
- features = []
- for i in range(1, 5):
- features.append(make_feature(duration=i*1.0))
- tta = adjusters.TargetTimeAdjuster(features=features, target_time=10.0)
- self.assertEqual(tta.adjust(), features)
-
-
- def test_sort_by_score_time(self):
- """Test sorting of list of Features by score (primary) and time (secondary)
-
- Cases:
- - [(15.0, 1.0), (10.0, 1.0), (12.0, 1.0)] --> [(10.0, 1.0), (12.0, 1.0), (15.0, 1.0)] # score equal, sort by time
- - [(15.0, 1.0), (10.0, 4.0), (12.0, 3.0)] --> [(15.0, 1.0), (12.0, 3.0), (10.0, 4.0)] # sort by score
- - [(15.0, 1.0), (10.0, 1.0), (12.0, 2.0)] --> [(10.0, 1.0), (15.0, 1.0), (12.0, 2.0)] # mixed: scores below duration
- - [] --> []
- - [(15.0, 1.0)] --> [(15.0, 1.0)]
-
- Cases giving RDH trouble:
- - [(16.0, 1.0), (16.0, 1.0), (1.0, 1.0), (1.0, 1.0)] --> [(1.0, 1.0), (1.0, 1.0), (16.0, 1.0), (16.0, 1.0)] # multiple lowest scoring, multiple shortest duration
- """
-
- tta = adjusters.TargetTimeAdjuster()
- with self.subTest("score equal, sort by duration"):
- features = [
- make_feature(duration=15.0, score=1.0),
- make_feature(duration=10.0, score=1.0),
- make_feature(duration=12.0, score=1.0)
- ]
- self.assertEqual(tta._sort_by_score_time(features), [features[1], features[2], features[0]])
-
- with self.subTest("sort by score, duration irrelevant"):
- features = [
- make_feature(duration=15.0, score=1.0),
- make_feature(duration=10.0, score=4.0),
- make_feature(duration=12.0, score=3.0)
- ]
- self.assertEqual(tta._sort_by_score_time(features), [features[0], features[2], features[1]])
-
- with self.subTest("mixed: scores below duration"):
- features = [
- make_feature(duration=15.0, score=1.0),
- make_feature(duration=10.0, score=1.0),
- make_feature(duration=12.0, score=2.0)
- ]
- self.assertEqual(tta._sort_by_score_time(features), [features[1], features[0], features[2]])
-
- with self.subTest("empty"):
- self.assertEqual(tta._sort_by_score_time([]), [])
-
- with self.subTest("single"):
- features = [mock.Mock(duration=15.0, score=1.0)]
- self.assertEqual(tta._sort_by_score_time(features), features)
-
- with self.subTest("multiple lowest scoring, multiple shortest duration"):
- features = [
- make_feature(duration=16.0, score=1.0),
- make_feature(duration=16.0, score=1.0),
- make_feature(duration=1.0, score=1.0),
- make_feature(duration=1.0, score=1.0)
- ]
- self.assertEqual(tta._sort_by_score_time(features), [features[2], features[3], features[0], features[1]])
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