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Automation Testing :What types of software tests should be automated first?

What's automation testing?

Automation testing is the application of software tools to automate an individual-driven manual procedure for assessing and supporting a software product. Most modern software projects now include automated testing from origin. 


Back when manual testing was the standard, it was common practice for software organizations to employ a complete-time QA team. This group would develop a selection of evaluation plans,' or step-by-step checklists that maintain a feature of a software project behaves as expected. The QA team could then manually execute these checklists every time a new update or change was pushed into the software project, then return the results of the test plans to the engineering team for review and any additional development to address issues.




Why is testing automation significant to CD?


Continuous delivery (CD) is all about delivering new code releases as fast as possible to customers. Automated testing is critical to this goal. There is no way to automate delivery to customers if there is a manual, time-consuming step inside the delivery procedure.


CD is a part of a larger deployment pipeline. CD is a successor to and dependant on constant integration (CI). CI is fully responsible for running automated tests against some other new code modifications and confirming that those modifications don't violate established features or introduce any new bugs. CD is triggered once the continuous integration measure moves the automated test program.


This relationship between automation testing, CI, and CD produces many benefits for a high-velocity software group. Automated testing ensures quality at every stage of development by ensuring new commits do not introduce any bugs, so the software remains deployment-ready constantly.


What types of software tests should be automated first?


Arguably the most valuable tests to execute will be end-to-end (E2E) tests. E2E tests simulate a user-level experience across the full stack of a software product. E2E test plans normally cover user-level stories such as: "an individual can log in" a user can create a deposit" the user may change email settings". These tests are highly valuable to implement as they offer assurance that actual users are using a smooth bug-free experience, even when fresh commits are pushed.


E2E testing applications capture and replay user actions, so E2E evaluation programs become recordings of key user experience flows. If a software product is lacking any sort of automated testing policy, it is going to find the maximum value by implementing E2E tests of the most critical business flows. E2E tests could be costly upfront to catch and record the user flow sequence. If the software product is not doing rapid daily releases it could be more economical to have an individual team manually execute through the E2E evaluation plans.



As its name suggests, unit tests cover individual units of code. Units of code are best measured in role definitions. A unit test will insure an individual function. Unit tests will assert that anticipated input to a function matches the anticipated output. Code that's sensitive calculations (as it might pertain to fund, health care, or aerospace) is covered by unit tests. Unit tests are cheap and fast to implement and provide a high return on investment.


Often a unit of code is likely to make an external call to a 3rd party support. The primary codebase being analysed will not have access to this code of this 3rd party utility. Integration tests cope with mocking these 3rd party dependencies and asserting the code interfacing together behaves as expected.


Integration tests are similar to unit tests in how they are composed and within their tooling. Integration tests can be an inexpensive alternative to E2E tests but the return on investment is more debatable when a combination of unit evaluations and E2E are already in place.



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