White Box Testing

More documents

Recommendations

Info

Data Flow <strong>Testing</strong>• The techniques discussed so far have all been based on "control flow"• You can also design test cases based on "data flow“ (i.e., how data flowsthrough the code)• Some statements "define" a variable’s value (i.e., a “variable definition”)– Variable declarations with initial values– Assignments– Incoming parameter values• Some statements "use" variable’s value (i.e., a “variable use”)– Expressions on right side of assignment– Boolean condition expressions– Parameter expressions
Data Flow <strong>Testing</strong>• For every "use" of a variable– Determine all possible places in the program where the variablecould have been defined (i.e., given its most recent value)– Create a test case for each possible (Definition, Use) pair
Page 1: White Box TestingSources:Code Compl
Page 4 and 5: Complete Path Coverage• Test ALL
Page 6 and 7: Branch coverage• Similar to line
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 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

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?