## Amazon Interview Question

Testing / Quality AssurancesThis is Good answer however I would like to add some points ..

1.Identify all the scenario where calculation is going wrong.

2.Understand the business rules for those scenarios to find out where (Which part of code/Component) these Business rules were implemented .

3.Running more test cases on the component we can pin point the under which circumestances it is failing and identify those factors.

4.Do the fix if you are Dev .

5.Perform unit testing .

6.Plan regression from tracibilty matrix . Identify all the Busuiness rules which are implemented in that component and regress the component.

agree above.

1. Identity where goes wrong, how many pages，which category of pages is wrong.Is any problem with deliverying the result？

2. Find how the wrong result is caculated，the logic of caculation，which attributes or logic is wrong.

Running enough test case will find the reason.

Then，fix it.

Unit Test

Integrate Test

Regression Test.

Taxes are calculated based on zipcodes/ shipping address.

We must ensure taxware is on before begin the triage process

verify correct percentage based on zipcode is added to order total

verify tax percentage is changed when there is promotion is applied to the product ( which means item price would get altered)

verify any tax free promotion is applied to the order , so that no tax applied

verify order total, item price is consistent across all the application untill where order gets fulfilled . ( say xml file which carries order information across various application)

1) Check if the problem is consistent across some other category of products

2) Check if the problem is consistent across some products with different price range

These are some scenario to assure if problem is consistent throughout the site

1) check logs / traces if any for the function responsible for calculation. Maybe things are correct at back end and only while displaying its the problem.

using this if problem found, get it fix, unit test it, integration and followed by Regression

1. Calculation of taxes is often involved with more than 1 price attributes.

- OOPs April 21, 20092. We need to know which attributes (like quantity, discount, base price etc) are involved in that calculation.

3. Once all the involved attributes are identified, verify if there are any validations or recommendations on these attributes.

4. Verify the calculation's logic.

5. Performing these steps will give the exact location where the error is occurring.

6. Now once this is fixed, first perform unit test on the fixed area.

7. After unit test, integrate this feature with all possible (or allowed) attributes/validations/recommendations for calculations.

8. Now try the negative testing and regression.