1 files changed, 12 insertions, 0 deletions
diff --git a/test/lib/testing.py b/test/lib/testing.py
index 00b65c6e3..8f4838d0a 100644
--- a/test/lib/testing.py
+++ b/test/lib/testing.py
@@ -387,6 +387,18 @@ def emits_warning_on(db, *warnings):
         return function_named(maybe, fn.__name__)
     return decorate
 
+def assert_warnings(fn, warnings):
+    """Assert that each of the given warnings are emitted by fn."""
+    
+    orig_warn = util.warn
+    def capture_warnings(*args, **kw):
+        orig_warn(*args, **kw)
+        popwarn = warnings.pop(0)
+        eq_(args[0], popwarn)
+    util.warn = util.langhelpers.warn = capture_warnings
+    
+    return emits_warning()(fn)()
+    
 def uses_deprecated(*messages):
     """Mark a test as immune from fatal deprecation warnings.