no-extraneous-import.js

/**
 * @author Toru Nagashima
 * See LICENSE file in root directory for full license.
 */
"use strict"

const path = require("path")
const RuleTester = require("eslint").RuleTester
const rule = require("../../../lib/rules/no-extraneous-import")

/**
 * Makes a file path to a fixture.
 * @param {string} name - A name.
 * @returns {string} A file path to a fixture.
 */
function fixture(name) {
    return path.resolve(__dirname, "../../fixtures/no-extraneous", name)
}

const tester = new RuleTester({ parserOptions: { sourceType: "module" } })

tester.run("no-extraneous-import", rule, {
    valid: [
        {
            filename: fixture("dependencies/a.js"),
            code: "import bbb from './bbb'",
        },
        {
            filename: fixture("dependencies/a.js"),
            code: "import aaa from 'aaa'",
        },
        {
            filename: fixture("dependencies/a.js"),
            code: "import bbb from 'aaa/bbb'",
        },
        {
            filename: fixture("dependencies/a.js"),
            code: "import aaa from '@bbb/aaa'",
        },
        {
            filename: fixture("dependencies/a.js"),
            code: "import bbb from '@bbb/aaa/bbb'",
        },
        {
            filename: fixture("devDependencies/a.js"),
            code: "import aaa from 'aaa'",
        },
        {
            filename: fixture("peerDependencies/a.js"),
            code: "import aaa from 'aaa'",
        },
        {
            filename: fixture("optionalDependencies/a.js"),
            code: "import aaa from 'aaa'",
        },

        // missing packages are warned by no-missing-import
        {
            filename: fixture("dependencies/a.js"),
            code: "import ccc from 'ccc'",
        },
    ],
    invalid: [
        {
            filename: fixture("dependencies/a.js"),
            code: "import bbb from 'bbb'",
            errors: ['"bbb" is extraneous.'],
        },
        {
            filename: fixture("devDependencies/a.js"),
            code: "import bbb from 'bbb'",
            errors: ['"bbb" is extraneous.'],
        },
        {
            filename: fixture("peerDependencies/a.js"),
            code: "import bbb from 'bbb'",
            errors: ['"bbb" is extraneous.'],
        },
        {
            filename: fixture("optionalDependencies/a.js"),
            code: "import bbb from 'bbb'",
            errors: ['"bbb" is extraneous.'],
        },
    ],
})