How will you test a calculator? Any thoughts? thanks, === Sorry that I did not elaborate this question much at the beginning. Now, I want to give more backgrounds about this. This question was asked during a technical interview for a programmer position. So I suppose they were looking for some really "smart" answers or some good approach to test such application... Thanks again.

<ul> <li>Exercise the interface. Does it do what you expect?</li> <li>Exercise the functionality. Does it do what you expect?</li> <li>Exercise boundary conditions. Does it handle division by zero? How does it handle really big and really small values? Are there rounding errors that crop up?</li> </ul>

Besides normal calculations... Divide by zero. Make sure negative numbers work Check if rounding is correct

how do you test a calculator? [closed]

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testing

How will you test a calculator? Any thoughts?

thanks,

=== Sorry that I did not elaborate this question much at the beginning. Now, I want to give more backgrounds about this. This question was asked during a technical interview for a programmer position. So I suppose they were looking for some really "smart" answers or some good approach to test such application...

Thanks again.

377

asked Jul 12 '10 18:07

Jay

3 Answers

Exercise the interface. Does it do what you expect?
Exercise the functionality. Does it do what you expect?
Exercise boundary conditions. Does it handle division by zero? How does it handle really big and really small values? Are there rounding errors that crop up?

197

answered Sep 22 '22 15:09

John

by throwing it against a wall, if it breaks... then it wasn't meant to be.

answered Sep 23 '22 15:09

jeremiah

Besides normal calculations...

Divide by zero.

Make sure negative numbers work

Check if rounding is correct

answered Sep 21 '22 15:09

Ed B

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