Software Quality Assurance & Testing Stack Exchange is a question and answer site for software quality control experts, automation engineers, and software testers. It only takes a minute to sign up.
Sign up to join this community
I've read about UAT in Continuous Delivery by Humble. It is mentioned that UAT is a subset of user acceptance(UA). And in another article that we need to do unit testing, component testing, system testing,... before UAT.
The question is: are the Unit testing or Component testing a subset of UAT? Is UAT larger than UA in scope?
Are Unit Testing, System Testing and Component Testing subsets of User Acceptance (UA)?
They are not so much subsets as much as different phases. Systems testing is probably the one that relates most to User Acceptance Testing.
Unit testing is done while writing the corresponding application code and is at the level of "When I call this method internally with these params, I expect this response". This is before any other testing can be done.
"System Testing" is a bit vague. Assuming it means integrated testing this may be where User Acceptance is defined for a given organization via manual testing or it may mean automated integrated tests, for example UI feature tests that test that the code, the UI and the database all work together.
"Component Testing" can either mean the unit tests written for a component or (more likely) whether components can work together. This would be integrated testing and would be done after Unit Tests but before User Acceptance Testing which will usually be manual.
It depend how in the project the UAT is defined. There could be a document something as "Testing Strategy" for UAT phase and this can define whether the Unit test results, code coverage metric, or whatever is a part of User acceptance tests in some manner.
It is not about subsets, but about the testing phases:
So the other test phases are not included into UAT as UAT is just another test phase. Try to read some testing methodology, for example TMap-NEXT or ISTQB.
But according to my experience, part of the UAT -COULD BE- the check of resulting metrics of the previous phases, including unit test results, the static code analysis, etc.
It depends on who uses the term. Either of the orderings you described is possible. If you hear or read someone using the term in an ambiguous way, and the ordering matters, ask them which definition they are using.
who is important? Does developer, customer have different view on UA UAT?