Testing Life Cycle - phases of testing
Unit Testing
Focused verification of individual modules in isolation.
Written by developer. Performed by developer.
Integration Testing
Verification of multiple modules in combination. Focus on
interfaces between modules and interactions among multiple
modules. Written by either developer or test team. Performed by
test team.
System Testing
Testing application in context of entire system; hardware, database,
web server, etc.
Verify conformity with requirements. System Tests are the test of
the end-user functionality.
System Tests verify the correct functioning of all the required
features. Written by developers (in 206).
Performed by test team.
When should we write system tests?
Acceptance Testing
Tests run by the customer on the completed system to validate the
release. Usually run in customer's
environment with customer's data.