Methods and apparatuses enable generating test content for test system from an executed transaction of an execution system. The data resulting from the execution of the transaction in the execution system is accessed and used to generate test content for a test case. The test case can include the transaction data unmodified, or the transaction data can be modified and stored as the test content. The test system executes the test case to generate a result, and the result can be compared against what is expected based on the test content.