prettier-plugin-gherkin

prettier-plugin-gherkin

This prettier plugin format your gherkin (.feature files) documents.

Example of changes:

@accountability
@accountability-json
Feature: accountability
    accounts should always be good
    @truncateTables
    Scenario: Check accountability
        # Insert fixtures
        Given the following fixtures files are loaded:
            | 10.contracts.yml            |
            | 20.wallet.yml               |
            | 30.tax.yml |

        Given I inject the header "authorization" with value 'Bearer some-token'

        And I inject the header "accept" with value "application/json"

        Given I create an order
            Then the response status code should be 200
            When I pay the latest order
        And I refund the last payment and transaction list with transactions:
                """
            [{"name": "card",
                    "credit": 5000
                }
            ]
            """

Will be formatted to:

@accountability
@accountability-json
Feature: accountability
    accounts should always be good

    @truncateTables
    Scenario: Check accountability
        # Insert fixtures
        Given the following fixtures files are loaded:
            | 10.contracts.yml |
            | 20.wallet.yml    |
            | 30.tax.yml       |

        Given I inject the header "authorization" with value 'Bearer some-token'
        And I inject the header "accept" with value "application/json"

        Given I create an order
        Then the response status code should be 200

        When I pay the latest order
        And I refund the last payment and transaction list with transactions:
            """
            [
                {"name": "card",
                    "credit": 5000
                }
            ]
            """

Options

This plugin has a single options:

escapeBackslashes

default to false

If false, all escaped backslash will be transformed to simple backslash : \\ → \ If true, all backslash will be espaced : \ → \\

This option may due to the parser(see issue) and is here because of an inconsistence between the gherkin reference, that said that:

if you need a \, you can escape that with \\.

and the tooling that accept unescaped \, including the cucumber parser used under the hood.

You may want to check your code base and be consistent : if you use simple backslash, keep the default option, if you escape all backslash, then set this option to true.

Documentation

Prettier plugin documentation

Gherkin AST schema

Useful resources on Gherkin language

• Learn Gherkin on specflow.org
• Cucumber Gherkin reference
• Cucumber Gherkin JavaScript parser
• Prettier command reference

Test datas

Test datas can be found here : https://github.com/cucumber/common/tree/main/gherkin/testdata