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bpo-40331: Increase test coverage for the statistics module #19608

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Merged
taleinat merged 10 commits into from
May 13, 2020
Merged

bpo-40331: Increase test coverage for the statistics module #19608

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ccd8bef
bpo-40331: increase test coverage for the statistics module
tzabal Apr 19, 2020
21084c1
Add a News entry using the blurb tool
tzabal Apr 19, 2020
49def61
Revert cosmetic change in docstring
tzabal Apr 19, 2020
b2b9844
Remove the News entry
tzabal Apr 20, 2020
50a843f
Use assertRaises as a context manager in the tests
tzabal Apr 25, 2020
bbe16bd
Use assertRaisesRegex in the test_single_value_unsupported_type test
tzabal Apr 26, 2020
74b047a
Add test for inputs with multiple mixed valid/invalid values
tzabal Apr 26, 2020
1a5c2df
Rename tests and remove comments as requested in review
tzabal Apr 26, 2020
ac8b586
Combine two unit tests into one
tzabal Apr 26, 2020
ee55b16
Use subTest in tests with 3 or more cases
tzabal Apr 27, 2020
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Add test for inputs with multiple mixed valid/invalid values
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@tzabal
tzabal committed Apr 26, 2020
commit 74b047a86a0383fc8a487bc5d89ac5f3fad1218a
10 changes: 10 additions & 0 deletions Lib/test/test_statistics.py
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Expand Up @@ -1525,6 +1525,16 @@ def test_single_value_unsupported_type(self):
with self.assertRaisesRegex(TypeError, '^unsupported type$'):
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@taleinat taleinat Apr 26, 2020

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I don't see the value of this regex here: Would it be wrong if we changed the error message in the future? I prefer that we just check that a TypeError is raised.

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@tzabal tzabal Apr 26, 2020

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Done.

self.func(['3.14'])

def test_multiple_values_type_error(self):
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@taleinat taleinat Apr 26, 2020

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This could be combined with the previous test method.

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@tzabal tzabal Apr 26, 2020

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Indeed, now they assert the same behavior, with the same way. I will combine them under a test with name test_invalid_type_error.

# Test TypeError is raised when given multiple (valid/invalid) values
for data in [
['1', '2', '3'], # only strings
[1, '2', 3, '4', 5], # mixed strings and valid integers
[2.3, 3.4, 4.5, '5.6'] # only one string and valid floats
]:
with self.assertRaises(TypeError):
self.func(data)

def test_ints(self):
# Test harmonic mean with ints.
data = [2, 4, 4, 8, 16, 16]
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