White Box Testing

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Branch coverage• Similar to line coverage, but stronger• Test every branch in all possible directions• If statements– test both positive and negative directions• Switch statements– test every branch– If no default case, test a value that doesn't match any case• Loop statements– test for both 0 and > 0 iterations
Branch coverage• Example What test cases are needed to achieve complete branchcoverage of this subroutine?• Why isn't branch coverage the same thing as line coverage?
Page 1: White Box TestingSources:Code Compl
Page 4 and 5: Complete Path Coverage• Test ALL
Page 8 and 9: Branch coverage• Example What tes
Page 12 and 13: Partial Condition testing• This i
Page 14 and 15: Loop Testing• Design test cases b
Page 16 and 17: Data Flow Testing• The techniques
Page 18 and 19: Data Flow TestingIf ( Condition 1 )
Page 20: Relational condition testing• Tes
Page 23 and 24: Data Type Errors• Scan the code f
Page 25: Limitations of white box testing•

White Box Testing

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