textlint-tester

textlint-tester

Mocha test helper library for textlint rule.

Installation

npm install --save-dev textlint-tester mocha

Usage

• Write tests by using textlint-tester
• Run tests by Mocha

TextLintTester

TextLintTester#run(ruleName, rule, {valid=[], invalid=[]})

• {string} ruleName ruleName is a name of the rule.
• {Function} rule rule is the exported function of the rule.
• {string[]|object[]} valid valid is an array of text which should be passed.
  • You can use object if you want to specify some options. object can have the following properties:
    • {string} text: a text to be linted
    • {object} options: options to be passed to the rule
    • {string} ext: an extension key. Default: .md (Markdown)

valid object example:

[
    "text",
    { text : "text" },
    {
        text: "text",
        options: {
            "key": "value",
        },
    },
    {
        text: "<p>this sentence is parsed as HTML document.</p>",
        ext: ".html",
    },
]

• {object[]} invalid invalid is an array of object which should be failed.
  • object can have the following properties:
    • {string} text: a text to be linted.
    • {string} output: a fixed text.
    • {string} ext: an extension key.
    • {object[]} errors: an array of error objects which should be raised againt the text.

invalid object example:

[
    {
        text: "text",
        output: "text",
        ext: ".txt",
        errors: [
            {
                messages: "expected message",
                line: 1,
                column: 1
            }
        ]
    }
]

Example

test/example-test.js:

const TextLintTester = require("textlint-tester");
const tester = new TextLintTester();
// rule
const rule = require("textlint-rule-no-todo");
// ruleName, rule, { valid, invalid }
tester.run("no-todo", rule, {
    valid: [
        "This is ok",
        {
            // text with options
            text: "This is test",
            options: {
                "key": "value"
            }
        }
    ],
    invalid: [
        // line, column
        {
            text: "- [ ] string",
            errors: [
                {
                    message: "Found TODO: '- [ ] string'",
                    line: 1,
                    column: 3
                }
            ]
        },
        // index
        {
            text: "- [ ] string",
            errors: [
                {
                    message: "Found TODO: '- [ ] string'",
                    index: 2
                }
            ]
        },
        {
            text: "TODO: string",
            options: {"key": "value"},
            errors: [
                {
                    message: "found TODO: 'TODO: string'",
                    line: 1,
                    column: 1
                }
            ]
        },
        {
         text: "TODO: string",
         output: "string", // <= fixed output
         errors: [
             {
                 message: "found TODO: 'TODO: string'",
                 line: 1,
                 column: 1
             }
         ]
        }
    ]
});

Run the tests:

$(npm bin)/mocha test/

Contributing

• Fork it!
• Create your feature branch: git checkout -b my-new-feature
• Commit your changes: git commit -am 'Add some feature'
• Push to the branch: git push origin my-new-feature
• Submit a pull request :D

License

MIT