What Is Software Testing

Software testing is used to know if the developed software of a computer is complete, exact, secured and of high quality. This procedure is done for the sake of stakeholders, in order to know the quality of its functions. Another reason for testing a software is to locate errors on an application or, program. Although there is no absolute software quality, still it is sought for, so that its operation is guaranteed. Software testing will never be able to assess the exactness of a computer software; the test is done as a comparison. This means that the condition and functions of the product is compared to a specific product.

Software testing has many approaches. However, it is generally considered as an investigation to test complicated products. There are two terms used to define the points which test engineers would like to carry out whenever they design test cases. These testing terms are:

White box is the internal view of the object which is being tested.

Black box the external view.

A small part of software testing is based on the intuition of a test engineer, while a large part of it is systematic. In order for it to be effective, it needs to include the program's complete analysis. There should also be a wide expertise and knowledge on the tools and techniques for testing. On the other hand, software testing is performed in relation with validation and verification, wherein the definitions are:

1. Validation – a procedure wherein the specifications of the user are checked.

2. Verification – the software or, product is evaluated and checked with its consistency and conformance, based on related specifications.

When a software is tested, there should be consistency with the test. To make this possible, a set of principles on testing should be followed. These enables the efficiency of software testing which, in turn, leads to an increase in the production. Generally, software testing is comprised of three major levels which are the:

1. Unit testing – the basic component of a computer software is evaluated. This will confirm if the design details for a certain unit has been implemented properly.

2. Integration testing – huge groups of software components are incorporated and evaluated until they operate as a whole. These software components have been tested and matched with factors of architectural design.

3. System testing – to evaluate if the requirements of the whole software are complied.

4. Acceptance testing – this is further done by the clients in acceptance of the overall computer software.

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