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import unittest |
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from collections import namedtuple |
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from foil.filters import AttributeFilter, create_key_filter, create_indexer |
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5
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TeamRank = namedtuple('TeamRank', ['sport', 'team', 'rank']) |
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class TestAttributeFilter(unittest.TestCase): |
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def setUp(self): |
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self.teams = [TeamRank('baseball', 'cubs', 2), |
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TeamRank('basketball', 'bulls', 1), |
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TeamRank('baseball', 'mets', 1), |
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TeamRank('basketball', 'lakers', 2), |
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TeamRank('basketball', 'knicks', 3), |
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TeamRank('basketball', 'bulls', 2)] |
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def test_include_attributes(self): |
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keys = ('sport', 'team') |
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include = [('basketball', 'bulls'), |
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('basketball', 'knicks')] |
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expected = [TeamRank('basketball', 'bulls', 1), |
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TeamRank('basketball', 'knicks', 3), |
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TeamRank('basketball', 'bulls', 2)] |
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result = list(AttributeFilter(keys, predicates=include).including(self.teams)) |
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self.assertEqual(expected, result) |
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def test_exclude_attributes(self): |
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keys = ('sport', 'team', 'rank') |
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remove = [('basketball', 'bulls', 2), |
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('baseball', 'mets', 1), |
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('basketball', 'lakers', 3)] |
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expected = [ |
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TeamRank('baseball', 'cubs', 2), |
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TeamRank('basketball', 'bulls', 1), |
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TeamRank('basketball', 'lakers', 2), |
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TeamRank('basketball', 'knicks', 3)] |
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result = list(AttributeFilter(keys, predicates=remove).excluding(self.teams)) |
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self.assertEqual(expected, result) |
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def test_create_key_filter(self): |
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properties = {'sports': ['baseball', 'basketball'], |
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'teams': ['bulls', 'knicks', 'lakers']} |
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expected = set([('sports', 'baseball'), |
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('sports', 'basketball'), |
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('teams', 'bulls'), |
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('teams', 'knicks'), |
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('teams', 'lakers')]) |
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result = set(create_key_filter(properties)) |
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self.assertSetEqual(result, expected) |
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59
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60
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class TestCreateIndexer(unittest.TestCase): |
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def setUp(self): |
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self.record = [0, 10, 20] |
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def test_single_indexer(self): |
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indexer = create_indexer([1]) |
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expected = (10,) |
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result = indexer(self.record) |
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self.assertEqual(expected, result) |
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def test_multi_indexer(self): |
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indexer = create_indexer([2, 0]) |
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expected = (20, 0) |
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result = indexer(self.record) |
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self.assertEqual(expected, result) |
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portfoliome /
foil
The coding style of this project requires that you add a docstring to this code element. Below, you find an example for methods:
If you would like to know more about docstrings, we recommend to read PEP-257: Docstring Conventions.