Lesson 2....PPT 1

What is Software Testing ? ,[object Object]

Which definition of SW Testing is most appropriate ? ,[object Object],[object Object],[object Object],[object Object]

A Good Definition ,[object Object],[object Object]

Objectives of SW Testing ,[object Object],[object Object],[object Object],[object Object],[object Object]

Testing vs Debugging ,[object Object],[object Object],[object Object]

Psychology of Testing ,[object Object],[object Object],[object Object],[object Object],[object Object]

Basic Testing Strategies ,[object Object],[object Object]

Black-Box Testing ,[object Object],[object Object],[object Object]

White-Box Testing ,[object Object],[object Object],[object Object]

Black-box vs White-Box Testing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Black-box vs White-box Testing Black-box Testing White-box testing Tests function Tests structure Can find requirements specification errors Can find design and coding errors Can find missing functions Can’t find missing functions

Is Complete Testing Possible ? ,[object Object],[object Object],[object Object],[object Object]

Example ,[object Object],[object Object],[object Object],[object Object]

Is Complete Testing Possible ? ,[object Object],[object Object]

Implications ... ,[object Object],[object Object],[object Object],[object Object]

Black-Box Testing ,[object Object],[object Object]

Functional Test-Case Design Techniques ,[object Object],[object Object],[object Object],[object Object]

Equivalence Class Partitioning ,[object Object],[object Object],[object Object],[object Object]

Guidelines for Identifying Equivalence Classes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Guidelines for Identifying Equivalence Classes ,[object Object],[object Object],[object Object],[object Object],[object Object]

Identifying Test Cases for Equivalence Classes ,[object Object],[object Object],[object Object]

Boundary Value Analysis ,[object Object],[object Object],[object Object],[object Object],[object Object]

Cause Effect Graphing ,[object Object]

Cause Effect Graphing Technique ,[object Object],[object Object],[object Object]

Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Example: Cause-Effect Graph C1 C2 C3 C4 E1 E2 E3 E5 E4 and and or and not and and not and and not not

Example: Cause-Effect Graph E1 E2 E5 E4 not not not not and C1 C2 C3 C4 E3 and and or and and and and

Example ,[object Object],[object Object],Example: C1 C2 C3 C4 0 0 - - 1 - 0 - - 1 1 0 - 1 1 1 1 - 1 1 E1 E2 E3 E4 E5 1 1 1 1 1

Error Guessing ,[object Object]

White Box Testing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

White Box Test-Case Design ,[object Object],[object Object],[object Object],[object Object]

Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

White Box Test-Case Design ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],X = X+1 a c T F b e T F d A > 1 and B = 0 A = 2 or X > 1 X = X/ A 2) A = 2, B = 1, X = 1 (abe) 1) A = 3, B = 0, X = 3 (acd)

Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],X = X+1 a c T F b e T Y d A > 1 and B = 0 A = 2 or X > 1 X = X/ A

Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],X = X+1 a c T F b e T Y d A > 1 and B = 0 A = 2 or X > 1 X = X/ A

Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Basis Path Testing ,[object Object],[object Object],[object Object],[object Object],[object Object]

Example 1 2 3 4 5 10 6 7 8 9 R4 R3 R2 11 12 13 R1 R6 R5 V(G) = 6 regions V(G) = #Edges - #Nodes + 2 = 17 - 13 + 2 = 6 V(G) = 5 predicate-nodes + 1 = 6 6 linearly independent paths

Basis Path Testing ( contd ) ,[object Object],[object Object],[object Object]

Loop Testing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Loop Testing ,[object Object],[object Object],[object Object],[object Object],[object Object]

Data Flow Testing( … ) ,[object Object],[object Object]

Testing Principles ,[object Object],[object Object],[object Object],[object Object],[object Object]

Testing Principles (contd) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Testing Principles (contd) ,[object Object],[object Object],[object Object]

Testing Activities in the SW Life Cycle SRS System Design Coding System Design Module designs Code Unit test Tested modules Integration Test Integrated software System Integration Test Tested software System Test, AcceptanceTest Requirements Specification Detailed Design SRS User Manual

Levels of Testing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Type of Testing Performed By

Unit Testing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What are Stubs, Drivers ? ,[object Object],[object Object],[object Object],[object Object],Driver Stub for C eg. to unit test B in isolation eg. module call hierarchy A B C B

Integration Testing ,[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Integration Test Approaches

Example: Module Hierarchy A B C D F H E

Comparison ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Top-down Integration ,[object Object],[object Object],[object Object],[object Object],[object Object]

Top-down Integration Testing Stub B Stub C Stub D Example: A

Top-down Integration Testing Stub C Stub D Stub F Stub E Example: A B

Bottom-Up Integration ,[object Object],[object Object],[object Object],[object Object]

Bottom-Up Integration Testing Driver E Driver F Example: F E

Bottom-Up Integration Testing B Driver A Example: F E

Comparison ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],No clear winner

Function Testing ,[object Object],[object Object],[object Object]

System Testing ,[object Object],[object Object],[object Object],[object Object],[object Object]

Types of System Tests ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Types of System Tests ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Acceptance Testing ,[object Object],[object Object]

Alpha and Beta Testing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Regression Testing ,[object Object]

When to Stop Testing ? ,[object Object],[object Object],[object Object]

Better Test Completion Criteria ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Better Test Completion Criteria ,[object Object],[object Object],# Errors found Week 10- 20- 30- 40- 1 2 3 4 5 6 # Errors found Week 10- 20- 30- 40- 1 2 3 4 5 6

Test Planning ,[object Object],[object Object],[object Object],[object Object],[object Object]

Master Test Plan (outline) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Master Test Plan (outline) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SW Test Documentation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SW Test Documentation ,[object Object],[object Object],[object Object],[object Object],[object Object]

SW Test Documentation ,[object Object],[object Object],[object Object]

SW Testing Tools ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SW Testing Support Tools ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Lesson 2....PPT 1

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Lesson 2....PPT 1