Thread Testing

A thread being the smallest unit of work a system can perform, thread testing is a software technique used in the early stages of integration to verify the key functional capabilities that carry out specific tasks. This testing is mainly done to make sure every time in the initial stages of integration a system should be capable of carrying out the required functional tasks as needed for final output. This methodology is put to use in testing applications that are based on client server architecture.

The key functional capabilities are demonstrated by testing a string of units that complete a specific function in the application at hand; this is normally done in order to be able to achieve the results one requires. This is usually done because some bugs are hidden in multithreaded systems and can only be discovered when multiple threads interact inside a single, these problems are mainly because of synchronisation.

Types of Thread testing are as follows:

  1. Single thread testing: This type of testing involves one application transaction at a time where the CISC system watches its behaviour thus enabling us to test the logic of the programme and also goes further to show whether or not the CISC information is correct.
  2. Multiple thread testing: This type of testing involves concurrency or several applications transactions are active, all the transactions are in the same CISC region, this tests the ability of a new transaction to co-exist with the old ones. However, some work in single thread testing may fail in the multithread test and worse still may cause the other transactions to fail and go as far as terminating CICS.

The thread being a business transaction consisting of a set of functions, it threads throughout the whole system and each function is tested on its own and thereafter added one after the other and then tested thus being tested integrated and subsystems and thereafter as a whole, this approach facilitates early systems.

Uses of thread testing are as follows:

  1. Thread testing is mostly used or suitable when one has a large project and it is required soon, it's used to make sure that the project is timely delivered as per the schedule.
  2. It is important to note that threads not only serve as the basis of integration but also drive the entire software development right from scheduling up to status reporting.
  3. It is mainly meant to effect execution and can also enable that management judges the status of each task, functional areas and requirements. Errors are said to be detected much earlier than usual.
  4. It creates a communication channel between developers and testers.

The reason of undergoing these tests is every time when a class of bugs are encountered in multithreaded systems. These are only seen when threads in multiples are found to interact or communicate on a single thread. Hence, thread testing can also be named as "Thread interaction testing". Although it is not confined to serve as the basis of integration rather it tends to control or regulate the entire software including software development and status sharing.

This type of software testing is well integrated and provides better knowledge about the scope of the project that revolves around the developers and testers.