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1. Software Testing

12. 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

28. 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

29. 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

42. 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

51. Software Testing - II

52. 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

58. Example: Module Hierarchy A B C D F H E

61. Example: Module Hierarchy A B C D F H E

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

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

65. Example: Module Hierarchy A B C D F H E

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

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