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author | Kevin Sheppard <kevin.k.sheppard@gmail.com> | 2017-08-17 13:02:35 +0100 |
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committer | Kevin Sheppard <kevin.k.sheppard@gmail.com> | 2017-08-17 13:13:26 +0100 |
commit | 633b11ca28e0c740215c4797db27363cde5246ba (patch) | |
tree | d53a20c52bcdc891d2ba8e9b224b0c9c17749fdd /numpy/random/tests/test_random.py | |
parent | 26c79664d2edd48e1777cc4b31ecb952e2ec30d5 (diff) | |
download | numpy-633b11ca28e0c740215c4797db27363cde5246ba.tar.gz |
BUG: Missing dirichlet input validation
Dirichlet does not validate inputs and hangs when values are zero.
Adds check that values are strictly positive as required by the
distribution.
closes #2089
Diffstat (limited to 'numpy/random/tests/test_random.py')
-rw-r--r-- | numpy/random/tests/test_random.py | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/numpy/random/tests/test_random.py b/numpy/random/tests/test_random.py index 3a1d8af51..39c45889f 100644 --- a/numpy/random/tests/test_random.py +++ b/numpy/random/tests/test_random.py @@ -525,6 +525,11 @@ class TestRandomDist(object): assert_raises(TypeError, np.random.dirichlet, p, float(1)) + def test_dirichlet_bad_alpha(self): + # gh-2089 + alpha = np.array([5.4e-01, -1.0e-16]) + assert_raises(ValueError, np.random.mtrand.dirichlet, alpha) + def test_exponential(self): np.random.seed(self.seed) actual = np.random.exponential(1.1234, size=(3, 2)) |