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10 Techniques to Achieve Maximum Test Case Coverage

Any Software requirement or Application code is fully covered or not can be guaranteed by Test Case Coverage. Now a day, testing has reached at an advance level. Many testers are facing it as a challenge to achieve maximum test coverage at first cut. Here I am going to give few tips and techniques to achieve it.

1. Mapping the requirements to the test cases:
For this use Requirement Trace-ability Matrix. It will help to find out any requirements are missing or document inconsistency.

2. Functional Test Coverage:
We have to write all the test case as per the Functionality/Features mentioned under Specification.

3. UI/UX:
All UI icons, buttons, screens, tabs, menus, Validations etc. should be covered under test cases. So it will be helpful to the end users. 

4. Use different test case design techniques like Equivalence Partitioning (EP), Boundary Value Analysis (BVA) and Decision Table.

5. Structure (Code Coverage Analysis) Test Coverage:
Test Cases cover the minimum part of the code. Testing should cover Statement Coverage, Decision (Branch) Coverage, Condition Coverage, etc. so as per written code conditions testing can be achieved.

6. Test Case Coverage by integration(interaction)of different features/functionalities/modules:
Test Cases should cover the integration of different functionalities/features/modules. So it will help to test our application with different combinations.

7. Non-Functional Test Coverage:
Test case related to Security, Performance, Stress, Recovery, Usability should be included.

8. Test Case Coverage by Defect Analysis and Prevention:
Defect Analysis and Prevention is used to analyze defects which occur frequently and we can prevent defects to occur again and again.

9. Test Case Coverage by Ad-hoc testing OR Tester's instinct OR Gut Feel, experience based or error guessing:
With the help of Error guessing or Ad-hoc Testing we can find defect of the areas for which we have already doubts. So in advance we can prevent our Software to work in-efficiently. Also we have gut feeling that in this area there is definitely some defect and from that we can find feature which is not working properly. 

10. Use Case based Test Case Coverage:
As per available use cases test cases can be develop to achieve test case coverage.

Testing is never ending process. We may not achieve 100% test coverage but we must minimize the risk by finding maximum bugs before shipping the product to customers. I hope that above tips will definitely help you to enhance your test coverage.