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Diffstat (limited to 'numpy/lib/tests/test_arraypad.py')
| -rw-r--r-- | numpy/lib/tests/test_arraypad.py | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/numpy/lib/tests/test_arraypad.py b/numpy/lib/tests/test_arraypad.py index 55c917156..581ae30e5 100644 --- a/numpy/lib/tests/test_arraypad.py +++ b/numpy/lib/tests/test_arraypad.py @@ -3,8 +3,11 @@ """ from __future__ import division, absolute_import, print_function +import pytest + import numpy as np -from numpy.testing import (assert_array_equal, assert_raises, assert_allclose,) +from numpy.testing import (assert_array_equal, assert_raises, assert_allclose, + assert_equal) from numpy.lib import pad @@ -344,6 +347,20 @@ class TestStatistic(object): ) assert_array_equal(a, b) + @pytest.mark.parametrize("mode", [ + pytest.param("mean", marks=pytest.mark.xfail(reason="gh-11216")), + "median", + "minimum", + "maximum" + ]) + def test_same_prepend_append(self, mode): + """ Test that appended and prepended values are equal """ + # This test is constructed to trigger floating point rounding errors in + # a way that caused gh-11216 for mode=='mean' + a = np.array([-1, 2, -1]) + np.array([0, 1e-12, 0], dtype=np.float64) + a = np.pad(a, (1, 1), mode) + assert_equal(a[0], a[-1]) + class TestConstant(object): def test_check_constant(self): |