TST: Make default for all warnings "always"

This should make it easier in some cases, since a warning
caught in some test (but not important/not causing failure),
will not shadow later tests.
In principle the best thing is probably to always check the number
of warnings raised, so that you notice when a new warning shows
up in a test, though there may be other corner cases here.

1 files changed, 3 insertions, 3 deletions

diff --git a/numpy/testing/nosetester.py b/numpy/testing/nosetester.py
index b920399eb..5c66e497e 100644
--- a/numpy/testing/nosetester.py
+++ b/numpy/testing/nosetester.py
@@ -409,9 +409,9 @@ class NoseTester(object):
             # Reset the warning filters to the default state,
             # so that running the tests is more repeatable.
             warnings.resetwarnings()
-            # If deprecation warnings are not set to 'error' below,
-            # at least set them to 'warn'.
-            warnings.filterwarnings('always', category=DeprecationWarning)
+            # Set all warnings to 'warn', this is because the default 'once'
+            # has the bad property of possibly shadowing later warnings.
+            warnings.filterwarnings('always')
             # Force the requested warnings to raise
             for warningtype in raise_warnings:
                 warnings.filterwarnings('error', category=warningtype)