1 files changed, 53 insertions, 0 deletions
diff --git a/Lib/test/test_warnings.py b/Lib/test/test_warnings.py
new file mode 100644
index 0000000000..9cd3c30e29
--- /dev/null
+++ b/Lib/test/test_warnings.py
@@ -0,0 +1,53 @@
+import warnings
+
+# The warnings module isn't easily tested, because it relies on module
+# globals to store configuration information.  We need to extract the
+# current settings to avoid bashing them while running tests.
+
+_filters = []
+_showwarning = None
+
+def showwarning(message, category, filename, lineno, file=None):
+    i = filename.find("Lib/")
+    filename = filename[i:]
+    print "%s:%s: %s: %s" % (filename, lineno, category.__name__, message)
+
+def monkey():
+    global _filters, _showwarning
+    _filters = warnings.filters[:]
+    _showwarning = warnings.showwarning
+    warnings.showwarning = showwarning
+
+def unmonkey():
+    warnings.filters = _filters[:]
+    warnings.showwarning = _showwarning
+
+def test():
+    for item in warnings.filters:
+        print (item[0], item[1] is None, item[2].__name__, item[3] is None,
+               item[4])
+    hello = "hello world"
+    for i in range(4):
+        warnings.warn(hello)
+    warnings.warn(hello, UserWarning)
+    warnings.warn(hello, DeprecationWarning)
+    for i in range(3):
+        warnings.warn(hello)
+    warnings.filterwarnings("error", "", Warning, "", 0)
+    try:
+        warnings.warn(hello)
+    except Exception, msg:
+        print "Caught", msg.__class__.__name__ + ":", msg
+    else:
+        print "No exception"
+    warnings.resetwarnings()
+    try:
+        warnings.filterwarnings("booh", "", Warning, "", 0)
+    except Exception, msg:
+        print "Caught", msg.__class__.__name__ + ":", msg
+    else:
+        print "No exception"
+
+monkey()
+test()
+unmonkey()