Techniques are provided for real-time server testing in a production environment. Unlike traditional testing frameworks, embodiments of the present invention enable a server in production to be tested using live messages received from users. This eliminates the need to design and write test scripts to cover various scenarios and enables the server to be tested under live conditions. A test controller executing on the server under test can receive message attributes from a test client that define the types of messages to be used for a particular test. The test controller can identify live messages as they are received by the server that match the message attributes. The messages can be processed by the server in real time and then tested according to message tests received from the test client.