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Issue #4180: The warnings registries are now reset when the filters are modified.

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This commit is contained in:
Antoine Pitrou 2014-09-18 02:42:05 +02:00
commit 87538e7bc4
4 changed files with 101 additions and 9 deletions
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49
Lib/test/test_warnings.py
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@ -92,6 +92,16 @@ class FilterTests(BaseTest):
self.assertRaises(UserWarning, self.module.warn,
"FilterTests.test_error")
def test_error_after_default(self):
with original_warnings.catch_warnings(module=self.module) as w:
self.module.resetwarnings()
message = "FilterTests.test_ignore_after_default"
def f():
self.module.warn(message, UserWarning)
f()
self.module.filterwarnings("error", category=UserWarning)
self.assertRaises(UserWarning, f)
def test_ignore(self):
with original_warnings.catch_warnings(record=True,
module=self.module) as w:
@ -100,6 +110,19 @@ class FilterTests(BaseTest):
self.module.warn("FilterTests.test_ignore", UserWarning)
self.assertEqual(len(w), 0)
def test_ignore_after_default(self):
with original_warnings.catch_warnings(record=True,
module=self.module) as w:
self.module.resetwarnings()
message = "FilterTests.test_ignore_after_default"
def f():
self.module.warn(message, UserWarning)
f()
self.module.filterwarnings("ignore", category=UserWarning)
f()
f()
self.assertEqual(len(w), 1)
def test_always(self):
with original_warnings.catch_warnings(record=True,
module=self.module) as w:
@ -111,6 +134,26 @@ class FilterTests(BaseTest):
self.module.warn(message, UserWarning)
self.assertTrue(w[-1].message, message)
def test_always_after_default(self):
with original_warnings.catch_warnings(record=True,
module=self.module) as w:
self.module.resetwarnings()
message = "FilterTests.test_always_after_ignore"
def f():
self.module.warn(message, UserWarning)
f()
self.assertEqual(len(w), 1)
self.assertEqual(w[-1].message.args[0], message)
f()
self.assertEqual(len(w), 1)
self.module.filterwarnings("always", category=UserWarning)
f()
self.assertEqual(len(w), 2)
self.assertEqual(w[-1].message.args[0], message)
f()
self.assertEqual(len(w), 3)
self.assertEqual(w[-1].message.args[0], message)
def test_default(self):
with original_warnings.catch_warnings(record=True,
module=self.module) as w:
@ -541,7 +584,9 @@ class _WarningsTests(BaseTest, unittest.TestCase):
registry=registry)
self.assertEqual(w[-1].message, message)
self.assertEqual(len(w), 1)
self.assertEqual(len(registry), 1)
# One actual registry key plus the "version" key
self.assertEqual(len(registry), 2)
self.assertIn("version", registry)
del w[:]
# Test removal.
del self.module.defaultaction
@ -551,7 +596,7 @@ class _WarningsTests(BaseTest, unittest.TestCase):
registry=registry)
self.assertEqual(w[-1].message, message)
self.assertEqual(len(w), 1)
self.assertEqual(len(registry), 1)
self.assertEqual(len(registry), 2)
del w[:]
# Test setting.
self.module.defaultaction = "ignore"