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Testing Spreadsheets 
Felienne Hermans, TU Delft/Infotron 
@felienne 
www.eurostarconferences.com 
@esconfs 
#esconfs
Why do we test?
Prevent errors
Prevent errors 
Also: document intentions
Quick survey: 
Do spreadsheet users test?
Unit testing
Integration testing
But some times…?
So we need change analysis
Borders
Input
Assumptions
Difference between values
How to test in a spreadsheet?
Checks
Conditional formatting
Where to put tests?
Spreadsheet testing 
Felienne Hermans (@felienne)

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Fellienne Hermans - Testing Spreadsheets - EuroSTAR 2012