Cupl

A CLI tool for automatic CUcumber gherkin feature files generation from PLantuml activity diagram.

Cupl will help you transform .puml file of this diagram.

Into this Gherkin feature description

Feature: Simple ATM withdrawal
  No PIN retry, No Amount re-enter
 
  Scenario: Successful transaction
    Given Entered Correct PIN number
      And Balance is sufficient
    When enter amount
    Then dispense notes
      And print receipt
      And eject the card
 
  @important
  Scenario: Not enough money
    Given Entered Correct PIN number
      And Insufficient balance
    When enter amount
    Then display "Insufficient balance"
      And eject the card
 
  Scenario Outline: PIN is incorrect
    Given User's PIN is <pin>
    When insert card
      And User enters <input>
    Then display "incorrect PIN"
      And eject the card
 
    Examples:
      | pin    | input  |
      | 123456 | 325212 |
      | 123456 |        |

• Cupl
• Usage
  • Conventions
  • Basic
  • Install globally
• Syntax Support
  • Gherkin
  • PlantUML Activity Diagram (New Syntax)

Usage

Conventions

• User/Core activity must start with @ symbol, these will go to When steps of Gherkin file.
• If condition must be a statement that end with ?, the question mark will be drop while parsing.

❌ is PIN correct?

✅ PIN is correct?

• Else branch must be descriptive.

❌ no

❌ false

✅ PIN is incorrect

• Activity must not contain (!), if it ends with !, the activity will be consider as an Given.

Basic

1. create a .puml file and run

$ npx cupl FILE.puml
Feature: ...
...

1. a .cupl.json file will be generated to allow you to

• Rename Scenario ( by name field).
• Rename rename steps ( by alias dictionary) and insert parameters.
• Rename add @tag to Scenario and steps (by tags field - array of strings).
• Rename change Gherkin dialect.
• Provide examples.

Example:

{
  "$schema": "https://raw.githubusercontent.com/cinoss/cupl/master/src/config.schema.json",
  "global": {
    "alias": {
      "PIN is correct": "Entered Correct PIN number"
    },
    "dialect": "en"
  },
  "paths": {
    "PIN is correct|Balance is sufficient": {
      "name": "Successful transaction"
    },
    "PIN is correct|Insufficient balance": {
      "name": "Not enough money",
      "tags": ["important"]
    },
    "PIN is incorrect": {
      "alias": {
        "PIN is incorrect": "User's PIN is <pin>",
        "enter PIN": "User enters <input>"
      },
      "examples": [
        ["pin", "input"],
        ["123456", "325212"],
        ["123456", ""]
      ]
    }
  }
}

1. Run cupl again with -w flag to generate a file.

$ npx cupl -w FILE.puml
Feature: ...
...
Generated [FILE].feature successfully!

Install globally

$ npm install -g cupl
$ cupl FILE
running command...
...

Syntax Support

Gherkin

• Feature
• Example (or Scenario)
• Given, When, Then, And, But for steps (or *)
• Tags
• Examples
• Background
• Scenario Outline (or Scenario Template)
• Data Tables
• Rule
• Doc Strings
• Comments

PlantUML Activity Diagram (New Syntax)

• start, stop, end
• if, elseif, endif
• title, end title
• note, end note
• SDL (|, <, >, /, ], })
• repeat, repeat while, backward, while, end while
• fork, end fork
• Colors
• Arrow
• Connector
• Grouping
• Swimlanes
• Detach