From 79fbcc597dfd039d3261fffcb519b5ec5a18df9d Mon Sep 17 00:00:00 2001 From: Raymond Hettinger Date: Sat, 23 Feb 2019 22:19:01 -0800 Subject: bpo-36018: Make __pos__ return a distinct instance of NormDist (GH-12009) https://bugs.python.org/issue36018 --- Lib/test/test_statistics.py | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'Lib/test/test_statistics.py') diff --git a/Lib/test/test_statistics.py b/Lib/test/test_statistics.py index a65fbe8dd2..9549240f90 100644 --- a/Lib/test/test_statistics.py +++ b/Lib/test/test_statistics.py @@ -2128,6 +2128,18 @@ class TestNormalDist(unittest.TestCase): with self.assertRaises(statistics.StatisticsError): Y.cdf(90) + def test_unary_operations(self): + NormalDist = statistics.NormalDist + X = NormalDist(100, 12) + Y = +X + self.assertIsNot(X, Y) + self.assertEqual(X.mu, Y.mu) + self.assertEqual(X.sigma, Y.sigma) + Y = -X + self.assertIsNot(X, Y) + self.assertEqual(X.mu, -Y.mu) + self.assertEqual(X.sigma, Y.sigma) + def test_same_type_addition_and_subtraction(self): NormalDist = statistics.NormalDist X = NormalDist(100, 12) -- cgit v1.2.1