In order to develop a software with impeccable features, quality, and functionality, it is crucial for software engineers to implement rigorous and thorough testing during the early stages of software development. Moreover, testers should concentrate on testing even the smallest components of the software to validate its effectiveness as well as performance. One such testing technique that assists them in verifying the quality of individual features of the software is module testing, which will be discussed in detail below.
In a software product, a unit is the smallest component that is tested by software testers. These have set of specification, which help build the expected functionality and performance of the software. It is when these units are combined and integrated together that a module is formed, which is a fully formed component of a coherent code that can be tested by executing some functional signatures with numerous stimuli. These modules are a major part of the software and are tested via module testing.
A type of white box testing technique, module testing is a process of testing individual components, classes, subroutines, subprograms, or procedures in a program. This type of software testing is mainly carried out by a group of software testers, who are focused on testing software components in isolation. Also known as component and program testing, module testing increases the probability of detecting and rectifying defects as small portions of the software are tested separately, which allows thorough examination of the program.
The objective of module testing is not to validate the functionality or performance of the software, but to find and rectify defects and errors in the software, which further improves the quality of the whole software.
As modules are an integral part of a software program, testing them becomes extremely important for defining the qualities and effectiveness of the software. Apart from testing modules, module testing is also implemented by the team to test different components of the software separately. Other reasons for module testing are:
Similar to any software testing process, the procedure of module testing also follows a set path, wherein the team works together to find as many defects as possible. With its goal to identify majority of bugs and errors in the system, module testing is executed by the team of testers with the assistance of the following process.
During the process of module testing, the team follows a strategy that helps them execute the test effectively and allows them to get accurate and precise results. By following the module testing strategy, the testers can simplify the process testing as well as increase the probability of finding defects. Hence, the module testing strategy is:
While implementing module testing, the team of testers can encounter several challenges, which can complicate the process of testing and inhibit them from getting expected results. Here is list of various challenges encountered by the team during module testing.
To ensure that the process of module testing is executed without any major issue as well as to avoid various challenges encountered by the team during the process of testing, it is important for module testers to consider the following points, which are:
For new software testers, differentiating module testing from unit testing has always been a huge hassle. Several times testers consider them to be same, which further impacts their testing skills. Therefore, to avoid such a confusion here is a comparison between module and unit testing.
Unit testing, in computer programming, is a software testing technique wherein individual units of the source code are tested to validate their accuracy as well as usefulness. Performed by the development team, this type of software testing is extremely important and it offers testers various advantages, some of which are:
As modules are a combination of various units, the focus of modules testing is to test components and units of the software separately as well as simultaneously. Module testing consists of units integrated into a module that perform a specific function. This process of testing likely requires less testing infrastructure and resources, such as test stubs and harnesses. Other qualities that differentiate it from unit testing are mentioned above.
Executed by the team of testers, the process of module testing is extremely important as it allows testers to test individual subprograms and units. During module testing, the components can be tested simultaneously as it supports parallel testing, which further increases the speed of testing and helps the team prevent excessive expenditure of time and efforts. Moreover, with the assistance of module testing, the defects in the software can be tracked and rectified easily and more efficiently as it tests the software in small groups.