Question

What is Cucumber dry run?

Answer 1

Hey Zakir, Dry Run is an option provided by @CucumberOptions which are like property file or settings for your test. Cucumber dry run is basically used to compile cucumber feature files and step Definitions. If there is any compilation errors it will show when we use dry run. 

dryRun option can either set as true or false. If it is set as true, it means that Cucumber will only checks that every Step mentioned in the Feature File have corresponding code written in Step Definition file or not. So in case any of the function is missed in the Step Definition for any Step in Feature File, it will give us the message. For eg. in the following example we have set 'dryRun=True':

import org.junit.runner.RunWith;
import cucumber.api.CucumberOptions;
import cucumber.api.junit.Cucumber;

@RunWith(Cucumber.class)
@CucumberOptions(
  features = "Feature"
  ,glue={"stepDefinition"}
  ,dryRun = true
  )

public class TestRunner {

}

Answer 2

Dry Run is nothing  but checking the complete implementation of all the mentioned steps present in the Feature file.

Before the execution starts . Dry Run is Checking the implementionation  not about the execution  of scripts.

Simply it can validate  your script file