Why is automatic testing important?
1. Saves Time and Money: Testing needs to be repeated during the development cycles of software for ensuring quality. Each time the source code is changed / modified, and the more changes the more tests. To perform these testing tasks manually is time consuming and costly. Automated tests run again and again at no additional cost of time and they perform much faster. The repetitive tests can be performed from days to hours.
2. Improves Accuracy: Mistakes occur during monotonous manual testing. The same process of testing can be performed precisely every time and without missing to record detailed results.
3. Increases Test Coverage: The depth and the scope of the tests can be increased for improving software quality. The lengthy tests of manual testing could be executed unattended. This test can run on multiple systems of different configurations and operating systems. Automated tests can look into an application and see the contents of files, data tables, memory contents and the internal program states for determining whether the product is behaving as expected.
4. Can perform the tasks which cannot be done by manual testing: Automated tests can simulate the thousands of virtual users interacting within the network or web applications.