Step definitions with optional regex matching groups doesn't work.

[borisbrodski]

Consider following step definition: @Then("^I( don't)? see the Text \"([^"]*)\"$") public void seeOrDoesntSeeText(String dont, String text) { if (dont != null) { assertFalse(seeText(text)); } else { assertTrue(seeText(text)); } }

This step definition should work with both

• I see the Text "abc" and
• I doesn't see the Text "abc"

In Cuke4duke this produces IndexOutOfBounds exception in StepArgument class. The problem is, that the matcher.start(1) returns -1, if "don't" not there. This causes wrong call to the StepArgument-constructor in the line

• arguments.add(new StepArgument(matcher.group(i), matcher.start(i), stepName)); in the JdkPatternArgumentMatcher class.

[JanAhrens]

Maybe it's just a typo, but in your example, you write "doesn't" and your regex contains "don't" ...

[borisbrodski]

Yes, it's a type. Sorry for that.

[borisbrodski]

I would like to point out, that the problem still exists. The typo is only in the posted example.

[bcluca]

Hi, I see you have the same issue here.

Have a look at https://github.com/cucumber/cuke4duke/pull/124 and the corresponding commit for a quick patch. You can either check it out and build from source or wait for the pull request to be accepted.

Hope it helps.

[borisbrodski]

Cool! Thank you very much.