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Message Icon Topic: Data Driven Testing

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tanushree
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Quote tanushree Replybullet Topic: Data Driven Testing
    Posted: 31Oct2007 at 5:05am
Data Driven Testing

Both tools support the notion of data-driven tests, but implement this feature differently:
• SilkTest’s implementation is built around an array of user defined records. A record is adata structure defining an arbitrary number of data items which are populated with valueswhen the array is initialized [statically or at runtime]. Non-programmers can think of anarray of records as a memory resident spreadsheet of X number of rows which contain Ynumber columns where each row/column intersection contains a data item.The test code, as well as the array itself, must be hand coded. It is also possible to populatethe array each time the test is run by extracting the array’s data values from an ODBC compliant database, using a series of built-in SQL function calls. The test then iteratesthrough the array such that each iteration of the test uses the data items from the next recordin the array to drive the test or provide expected data values.
• WinRunner’s implementation is built around an Excel compatible spreadsheet file of Xnumber of rows which contain Y number of columns where each row/column intersectioncontains a data item. This spreadsheet is referred to as a Data Table.The test code, as well as the Data Table itself, can be created with hand coding or the use ofthe DataDriver visual recorder. It is also possible to populate a Data Table file each time thetest is run by extracting the table’s data values from an ODBC compliant database using aWinRunner wizard interfaced to the Microsoft Query application.. The test then iteratesthrough the Data Table such that each iteration of the test uses the data items from the nextrow in the table to drive the test or provide expected data values.Both tools also support the capability to pass data values into a testcase for a more modestapproach to data driving a test.



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