estimation of testing....
How much time should be estimated for testing when there is x hours of time for development. I mean percentage. e.g. 36 hours of development than how much time should be allocated to testing ?
It depends on major factors like application to be tested, test scenarios or test cases, resources involved. Since you are asking for rough calculation I would suggest you can consider 5 days development 2 day testing this is what we follow...This rule varies company to company or person to person
Unfortunately hours in dev vs hours testing doesn't scale consistently.
Originally Posted by dhabu
For example, a complete refactor vs building a new application from scratch is the same amount of testing, even though a complete refactor will take a lot longer.
Testing, scales more by risk and level of impact.
You want to look more on number of features that change, how deep the change is and how risky it is, and how different it affects the information architecture (changing a flow or type of data will have drastically high risk, even if amount of dev work is the same.).