TEST CASE WRITTING IS BASED ON THESE REQUIREMENT:
BRS: Business Requirement Specification
FRS: Functional Requirement Specification
SRS: System Requirement Specification
When should write test case?
- under-development stage.
Cross functional testing : (Testing with one another)
- developer and tester cross test the development.
Unit testing :
-Unit testing is done by the developers(it is also called as Modular testing)
Integration Testing:
- It is done by Teters.
- There are two types of Integration Testing:
- Top-Down Approach
- Bottom-Up Approach
Top-Down Integration Testing
- In Top-down Integration Testing, high-level modules are tested first, and lower-level modules are integrated step by step.
- Uses stubs to simulate lower-level modules during early testing.
- Helps validate system architecture and major workflows early in development.
- Ensures critical business logic is tested before full system integration
Bottom-Up Integration Testing
- In Bottom-Up Integration Testing, lower-level modules are tested first, followed by gradual integration of higher-level modules.
- Uses test drivers to simulate higher-level modules that are not yet available.
- Focuses on validating internal module logic and data flow first.
- Defects in core components are easier to detect and fix early.
1. Testing Environment preparation:
Example: OS, BROWSER, NETWORK, HARDWARE.
2.Test Bed Preparation:
- Testbed is a controlled, isolated environment containing the specific hardware, software, network configurations, test data, and tools needed to run and validate tests on a system.
- It allows teams to safely evaluate software or technology under realistic conditions without risking live production systems.
DIFFERENCE BETWEEN STUB AND DRIVERS:
DIFFERENCE BETWEEN ERROR, BUG AND DEFECT:
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