itproject-code/test/test_adjusters.py

"""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)