Snippet with a string and Doc String generates a syntax error

[karamosky]

Summary

When you have a step with a string argument and a Doc String argument, the generated snippet contains a duplicate argument name

Expected Behavior

Scenario: Snippet for undefined step with combined arguments
    Given a file named "features/undefined_steps.feature" with:
      """
      Feature:
        Scenario: combined step
          Given a "thing" with:
          \"\"\"
          thing
          \"\"\"
      """
    When I run `cucumber features/undefined_steps.feature -s`
    Then the output should contain:
      """
      Given('a {string} with:') do |string, string2|
        pending # Write code here that turns the phrase above into concrete actions
      end
      """

Current Behavior

Scenario: Snippet for undefined step with combined arguments
    Given a file named "features/undefined_steps.feature" with:
      """
      Feature:
        Scenario: combined step
          Given a "thing" with:
          \"\"\"
          thing
          \"\"\"
      """
    When I run `cucumber features/undefined_steps.feature -s`
    Then the output should contain:
      """
      Given('a {string} with:') do |string, string|
        pending # Write code here that turns the phrase above into concrete actions
      end
      """

Possible Solution

def append_block_parameter_to(array)
  parameter = format('string%<index>s', index: (array.size + 1 unless array.empty?))
  array << parameter
end

Steps to Reproduce (for bugs)

Context & Motivation

Other block parameters does not generate a "string" param, this Doc String param generates a "string"

Your Environment

• Version used: 3.1.2
• Operating System and version: macOS 10.14.6
• Link to your project:

[karamosky]

Fixed in #1402