You need to test a system though there is no documentation available and developers who developed it don't work there anymore. What would you do?
- We will perform exploratory testing of product - this shall give us an idea of the system and its basic workflow.
- During this testing, we can discover some 'blocker' bugs which cause system to crash.
- As a white box tester, you can then test different module code. This gives us an idea about test cases for different modules and relation between various modules.