minor test failure on armel -- no warning raised in test_matthews_corrcoef #7572
Description
I was pleasantly surprised that overall scikit-learn built/tested fine across a wide range of platforms despite problems with test_gpr on good old i386 (#7544): https://buildd.debian.org/status/package.php?p=scikit-learn&suite=unstable
but was amused to see that on armel (only) it fails with
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FAIL: sklearn.metrics.tests.test_classification.test_matthews_corrcoef
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Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/nose/case.py", line 197, in runTest
self.test(*self.arg)
File "/«PKGBUILDDIR»/debian/tmp/usr/lib/python2.7/dist-packages/sklearn/metrics/tests/test_classification.py", line 375, in test_matthews_corrcoef
matthews_corrcoef, [0, 0, 0, 0], [0, 0, 0, 0])
File "/«PKGBUILDDIR»/debian/tmp/usr/lib/python2.7/dist-packages/sklearn/utils/testing.py", line 236, in assert_warns_message
% func.__name__)
AssertionError: No warning raised when calling matthews_corrcoef
so wondered if I should just skip this test there or patch (submit PR) to skip those specific checks on armel or really someone would like to look deeper why on armel no warning is raised?