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I don't really understand the concept of testers. I just graduated and before I joined into workplace I thought I'd be pair programming with testers and using TDD where they will be writing tests and I will be passing them or something similar. However that's not the case. Apparently none of them that I have seen knows how to code. A few of them knows using basics of scripting languages, but that's pretty much all.
So essentially what happens is, when I am done with my code, I write tests (unit, integration etc.) for that and then push my code in. I tell tester what it is and what it does, then the tester tests the functionality and approves or asks for further discussion. I really don't see any use of this. I wish I could just tell them what I coded and they would just write the tests.
I also have seen some brilliant software developers being testers at tech companies (Google, Microsoft etc.). Why do these developers want to become testers? Are their developer skills actually being used? If so, by how?
I am so sorry, I am really confused about this whole tester concept (and yes, it's not taught at university). I also have read the question
Are programmers bad testers? however it mentions programmers getting involved of manual testing. While I have no doubt that a tester is great at testing a project, I found it a bit unnecessary for them to test a little functionality (ie this button submits a post request to xyz end point and sends these values).