A test script in software testing is a set of instructions that will be performed on the system to test that the system functions as expected. They can work in many different ways to test and monitor various aspects of a code base.
In general, using a test script allows an IT professional to isolate the test case and determine the result of a predetermined input. This is part of a much larger strategy of thoroughly testing software to eliminate any glitches and bugs, promoting better overall functionality for services and software products.
Test scripts can be developed in multiple ways. For example, when working with an object-orientated programming codebase, developers can use various strategies to access objects for the purpose of testing, including the written types of functions which capture an object in running code.
In some cases, developers can take advantage of application programming interfaces (APIs) for creating the kinds of test scripts that provide functionality for developing projects.
Many IT professionals will be aware of test scripts, particularly Software Testers and those within Quality Assurance jobs.