diff --git a/src/python/oftest/oft_assert.py b/src/python/oftest/oft_assert.py
new file mode 100644
index 0000000..d773c84
--- /dev/null
+++ b/src/python/oftest/oft_assert.py
@@ -0,0 +1,28 @@
+"""
+OpenFlow Test Framework
+
+Framework assert definition
+"""
+
+import sys
+import logging
+
+def oft_assert(condition, string):
+    """
+    Test framework assertion check
+
+    @param condition The boolean condition to check
+    @param string String to print if error
+
+    If condition is not true, it is considered a test framework
+    failure and exit is called.
+
+    This assert is meant to represent a violation in the 
+    assumptions of how the test framework is supposed to work
+    (for example, an inconsistent packet queue state) rather than
+    a test failure.
+    """
+    if not condition:
+        logging.critical("Internal error: " + string)
+        sys.exit(1)
+