Assertion Testing

Assertion Testing is performed by QA Valley to verifying that coded conditions confirm the product requirements. QA Valley codes testable logic specific to the conditions under evaluation, and verifies that the conditions are executable.

Assertion Testing is an assertion-based testing procedure conducted by testers to make sure the software product fulfills the customer’s requirements. An assertion is a Boolean expression written at a specified point in a program, which will be always true unless there is a bug in the program. Assertions allow testers to specify expected data in the response to a request made during a test run. The outcome of the test run is determined by whether all the assertions are passed. The test fails if an assertion fails. Testers can define any number of assertions for any request in a test.

Some of the common types of Assertions used at QA Valley during Assertion testing cycle are Response Assertions, Duration Assertions, Size Assertions, and HTML/XML Assertions. Using Response Assertions, the testers can add and compare pattern strings against different values of the server response. With Duration Assertions, it is verified that server response is received within the specified time constraints. Whether the server response contains the expected number of bytes, it is verified using Size Assertions. HTML/XML Assertions verify the HTML/XML syntax of data responded by the server.

The main benefit of Assertion Testing is to detect subtle errors in the application, which might go unnoticed in other types of testing. The use of assertions also makes debugging easier as it clearly tells the source and reason for bugs. With Assertion testing, errors are detected sooner after they occur than they might otherwise be detected. At QA Valley, our testers prepare flawless, good assertions and run them in the application to ensure the product is bug-free and meets the customer’s expectations. So, Assertion Testing is vital for ensuring the quality of the product.