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Diffstat (limited to 'Lib/test')
| -rw-r--r-- | Lib/test/test_statistics.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Lib/test/test_statistics.py b/Lib/test/test_statistics.py index d35cdd8..4adc5e4 100644 --- a/Lib/test/test_statistics.py +++ b/Lib/test/test_statistics.py @@ -2113,6 +2113,10 @@ class TestNormalDist(unittest.TestCase): Y = NormalDist(100, 0) with self.assertRaises(statistics.StatisticsError): Y.pdf(90) + # Special values + self.assertEqual(X.pdf(float('-Inf')), 0.0) + self.assertEqual(X.pdf(float('Inf')), 0.0) + self.assertTrue(math.isnan(X.pdf(float('NaN')))) def test_cdf(self): NormalDist = statistics.NormalDist @@ -2127,6 +2131,10 @@ class TestNormalDist(unittest.TestCase): Y = NormalDist(100, 0) with self.assertRaises(statistics.StatisticsError): Y.cdf(90) + # Special values + self.assertEqual(X.cdf(float('-Inf')), 0.0) + self.assertEqual(X.cdf(float('Inf')), 1.0) + self.assertTrue(math.isnan(X.cdf(float('NaN')))) def test_properties(self): X = statistics.NormalDist(100, 15) |