Support Cucumber Expressions

[pietmichal]

trafficstars

https://cucumber.io/docs/cucumber/cucumber-expressions/

"User enters {string} name" is much nicer than /^User enters (.*) name$/.

[bencompton]

Agreed, this would be great to support.

[kstarzyk]

I need that feature on my current project, I gave a try on this feature

I've concerned several approaches

• use cucumber-expression lib
• string preprocessing to detect if it contains {int} {string} etc. and then evaluate to RegExp
• add CucumberExpression as a type of step matcher

Currently I've done POC using second approach - string preprocessing, replace {int} {string} with corresponding regex,

    '{int}': '\\$(\\d+)',
    '{double}': '^(-?)(0|([1-9][0-9]*))(\\.[0-9]+)?$',
    '{string}': '"(.*)"', // example

It might seem quite hacky but works for me.