Investigating Software

Investigating Software

Tuesday, 11 January 2011

Counting Strings

If you've done the Rapid Software Testing course, then you'll probably be familiar with the Perlclip tool, from James Bach. If not, its a useful tool for generating strings of test text. In particular I find the Perlclip Counter-string function to be pretty useful. Counterstring builds a string that indicates its own length. E.g.: "*3*5*7*10*" The last asterisk is the 10th character.

Now available as a Firefox Add-on!

I've taken the counterstring functionality and implemented it in HTML and Javascript. While this form does not do everything the original [and the best] does, It might be useful for it to be accessible anywhere via a web page. All credit for the usefulness of this goes to James Bach, all the bugs are probably my doing.

Thats right - its got bugs, like you don't have to enter a character for the 'mark' or it lets you use numbers for the 'mark'. Older versions did odd things in IE6 etc. There are no doubt many more bugs...

Display a string of length:

The character: marks the spot.

The String you requested is:

The string created has a length of:


  1. There's a good reason to allow numbers for the mark: some fields prevent or reject the entry of non-alphanumeric characters before other processing happens. Some do the same with non-numeric characters. So right away, I wouldn't classify "lets you use numbers for the 'mark'" as a bug, but a feature.

    ---Michael B.

  2. Any bugs added on purpose? :)

  3. Good initiative & very helpful :-)

    I like the error message "Go try a different browser" funny :-)

  4. Brilliant Peter.

    I hope you will add more and more to this very useful take on the tool by James.