The document discusses the objectives and importance of software testing. It aims to find undiscovered errors through executing test cases that have a high probability of uncovering issues. Testing represents the final review of specifications, design, and code to ensure software quality. Defects can arise due to bad communication, design, or coding. Effective testing principles include linking tests to requirements, planning tests early, applying the Pareto principle, starting small and progressing to larger tests, recognizing exhaustive testing is impossible, and having an independent third party conduct testing.

1. Live from QBI Institute at NOIDA (NCR DELHI)

9. Objective & Intent (Myers 1979)
• Testing is a process of executing a program with the intent of finding an
error
• A good test case is one that has a high probability of finding an as-yet
undiscovered error
• A successful test is one that uncovers an as-yet-undiscovered error
Importance
“ Software Testing is a critical element of software quality assurance and
represents the ultimate review of specification, design and code generation.”
Roger Pressman
Why at all software has defects
• Bad Communication & Specification
• Bad Design
• Bad Coding

10. Davis in the year 1995 propounded the following Testing
Principles
• All Tests should be traceable to customer requirements
• Tests should be planned long before testing begins
• The Pareto Principle Applies to Software Testing
• Testing should begin “in the small” and progress towards
testing in the large
• Exhaustive Testing is not possible
• To be most effective testing should be conducted by an
independent third party