Why are developers bad testers?

Why programmers are bad testers: Programmers are more expensive than testers (in the vast majority of cases). The mindset is fundamentally different: “Build a (working) product” vs “This thing isn’t going out the door with any (unknown) bugs in it.”

Can a tester be a good developer?

Developers can be testers, but they shouldn’t be testers. Developers tend to unintentionally/unconciously avoid to use the application in a way that might break it. That’s because they wrote it and mostly test it in the way it should be used. A good tester on the other hand, tries to torture the application.

Why shouldn’t developers test the software they wrote?

Your developers, as good as they may be, write bugs in their software. They can’t find their own bugs. Even if they go testing each other’s code, they don’t have the kind of software breaking thinking & skills that QA do and just won’t find as many bugs.

Are testers coders?

While performing Black box testing, the tester does not require the knowledge of coding. Tester simply tests the software by inputting the data and then checks the output. White box testing or code-driven testing requires code knowledge.

Can a developer be a good tester?

Developer be the good TeStEr.. but only in some path of testing. Mainly no one can find fault in their own work, even if it has some bug. For that purpose only we need third eye. Testers are just the third eye to make your (developer’s) product more quality.

What is the difference between a tester and a programmer?

It is quite obvious that testers look at the product from a different perspective than programmers do. The developers think about how they can create the application and the testers about how they could break it. By saying “How they could break it” it does not mean that a tester will spoil the work done by the developer.

Should developers do unit testing and verification testing?

Developers generally think how to develop the application on the other hand testers think how the end-user is going to use the application. So, in short, there is no problem if developers are doing basic Unit Testing and basic verification testing. Developers can test a few exceptional conditions they know are critical and should not be missed.

What is the role of tester in software testing?

An important part of a tester’s’ job is to find the weak spots of the system and in it the breakable locations so they can be fixed. Most developers are concerned with solving problems, not creating them, which in turn makes it difficult for them to get into the tester’s mindset of destroying instead of building.