Why do Developers think that Testing is not a big deal? How many of you think that its correct?

Everything is easy when it's done by others !!

Most of the developers dont have a good knowledge of Testing, they do not know how testing can be done perfectly and what are ther rules / principle followed while testing. Most of the developers think only checking some kind of validation is testers job.
Give a Developer a testers job for one day and ask him to check an entire module in different possible ways to list out all the bugs and take the responsibility if anything is missed, then I think Developers will think again before saying "Testing is not a big deal".

All world class testers have excellent development knowledge too. I am not a tester, I am from development, but I respect my colleagues work too, as I know Testing is not my cup of tea.

For success of any project there should be independent testing team validating your applications. After all it’s testers responsibility to make the application look smarter !!!

I personally don’t mind developers testing their own code. The problem is that there are developers who are over confident & they say no need to test this path, no need to test that path, as I know it’s working properly. And right here developers skip the bugs.

Developer always wants to see his code working properly. So he will test it to check if it’s working correctly. But you know why tester will test the application? To make it fail in any way, and tester surely will test how application is not working correctly. This is the main difference in developer testing and tester testing.

So in short there is no problem if developers are doing the basic unit testing and basic verification testing. Developers can test few exceptional conditions they know are critical and should not be missed. But there are some great testers out there who helps in making applications look more smarter.....

End of the day, Quality deliverable to the client is what matters, which will help in getting more business and repeat orders from the client. Testing/QC is a check point, to validate the produced product/service, is in-line with the client expectations,  before releasing to the client. This concept is there in every industry, more crucial in medical and defense systems. For the end user, it does not matter who develops or tests the system. It is inidvidual organization effort to ensure quality deliverable, with or without having a seperate set of people called "Testers". If an organization has Testing group, then there is no harm in training this group about the relevant developement/coding basics, so that there is more collobaration and understanding between developers and testers.

So "NO BIG DEAL". Developers or Testers, we need to concentrate on our piece of work, and execute it with full acceptance and dedication and see to that project goals and the org goals are met.

Commonsense.

I'm not agree with this statement. not because of i'm QA but Testing is the mail part of the SDLC. Now a days, so many small organization is also started hiring Qa or Testing professional just because of improve the product and maintain Qaulity. If someone want to become Testing professional or QA then they have to knowledge about SDLC, STLC, ISO, CMMi Level as well as domain knowledge which is similar skills to developer or higher that them. Ultimately, Developer should be rely on QA persion. They know that if we did mistake, we have QA who will find it out and report us.

 So, moral of the story is Testing has the equal weightage. We can improve quality only by doing QA or testing.