Negative Testing

Negative testing is done by QA Valley to ensure stability of the application and to show that a component or system does not work.  It ensures that the application can gracefully handle invalid input or unexpected user behavior.

Testing application with invalid data is called negative testing. It is done to ensure that the application can handle unexpected user behaviour. Merely performing positive testing with valid data does not guarantee that the application is 100% fault free. Thus, negative testing is aimed at detecting possible application crashes in different situations and bringing out any potential flaw that could cause a serious impact on the functioning of the product. Invalid data used for negative testing includes unexpected inputs such as invalid data type, unlimited data input, improper web login and more.

Techniques used for Negative testing are Boundary Value Analysis, where test cases are designed to include values at the boundary and Equivalence Partitioning, where input data is divided into many partitions and values in each partition are tested at least once. Negative test cases include Embedded single quote, Data Bound Tests, Field Size Test, Performance Changes, Numeric Bound Test, Web Session Testing and Required Data Entry. Negative testing Data involves Injecting invalid data into URL, improper data entry, verification with invalid data size, invalid date format and session time out.

TestComplete, NegTest, MiniTest,LoadUI Pro,Rantly, Faker, Forgery, RandomXp and RandomData are some of the tools and frameworks used by QA Valley testing team for Negative software testing. As software becomes more complex it presents numerous use cases that are prone to failures. QA Valley’s negative testing team explores these use cases to ensure appropriate system behaviour in the presence of errors. QA Valley testing team creates negative tests with negate and non-negated characteristics using any possible variants of data input (both valid and invalid) thus creating tests that make the application more reliable and stable.