/
config-initializer.js
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/
config-initializer.js
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/**
* @fileoverview Tests for configInitializer.
* @author Ilya Volodin
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const assert = require("chai").assert,
fs = require("fs"),
path = require("path"),
os = require("os"),
sinon = require("sinon"),
sh = require("shelljs"),
autoconfig = require("../../../lib/init/autoconfig"),
npmUtils = require("../../../lib/init/npm-utils");
const originalDir = process.cwd();
const proxyquire = require("proxyquire").noPreserveCache();
//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------
let answers = {};
describe("configInitializer", () => {
let fixtureDir,
npmCheckStub,
npmInstallStub,
npmFetchPeerDependenciesStub,
init,
localESLintVersion = null;
const log = {
info: sinon.spy(),
error: sinon.spy()
};
const requireStubs = {
"../shared/logging": log,
"../shared/relative-module-resolver": {
resolve() {
if (localESLintVersion) {
return `local-eslint-${localESLintVersion}`;
}
throw new Error("Cannot find module");
}
},
"local-eslint-3.18.0": { linter: { version: "3.18.0" }, "@noCallThru": true },
"local-eslint-3.19.0": { linter: { version: "3.19.0" }, "@noCallThru": true },
"local-eslint-4.0.0": { linter: { version: "4.0.0" }, "@noCallThru": true }
};
/**
* Returns the path inside of the fixture directory.
* @returns {string} The path inside the fixture directory.
* @private
*/
function getFixturePath(...args) {
const filepath = path.join(fixtureDir, ...args);
try {
return fs.realpathSync(filepath);
} catch (e) {
return filepath;
}
}
// copy into clean area so as not to get "infected" by this project's .eslintrc files
before(() => {
fixtureDir = path.join(os.tmpdir(), "eslint/fixtures/config-initializer");
sh.mkdir("-p", fixtureDir);
sh.cp("-r", "./tests/fixtures/config-initializer/.", fixtureDir);
fixtureDir = fs.realpathSync(fixtureDir);
});
beforeEach(() => {
npmInstallStub = sinon.stub(npmUtils, "installSyncSaveDev");
npmCheckStub = sinon.stub(npmUtils, "checkDevDeps").callsFake(packages => packages.reduce((status, pkg) => {
status[pkg] = false;
return status;
}, {}));
npmFetchPeerDependenciesStub = sinon
.stub(npmUtils, "fetchPeerDependencies")
.returns({
eslint: "^3.19.0",
"eslint-plugin-jsx-a11y": "^5.0.1",
"eslint-plugin-import": "^2.2.0",
"eslint-plugin-react": "^7.0.1"
});
init = proxyquire("../../../lib/init/config-initializer", requireStubs);
});
afterEach(() => {
log.info.resetHistory();
log.error.resetHistory();
npmInstallStub.restore();
npmCheckStub.restore();
npmFetchPeerDependenciesStub.restore();
});
after(() => {
sh.rm("-r", fixtureDir);
});
describe("processAnswers()", () => {
describe("prompt", () => {
beforeEach(() => {
answers = {
purpose: "style",
source: "prompt",
extendDefault: true,
indent: 2,
quotes: "single",
linebreak: "unix",
semi: true,
moduleType: "esm",
es6Globals: true,
env: ["browser"],
format: "JSON"
};
});
it("should create default config", () => {
const config = init.processAnswers(answers);
assert.deepStrictEqual(config.rules.indent, ["error", 2]);
assert.deepStrictEqual(config.rules.quotes, ["error", "single"]);
assert.deepStrictEqual(config.rules["linebreak-style"], ["error", "unix"]);
assert.deepStrictEqual(config.rules.semi, ["error", "always"]);
assert.strictEqual(config.env.es6, true);
assert.strictEqual(config.globals.Atomics, "readonly");
assert.strictEqual(config.globals.SharedArrayBuffer, "readonly");
assert.strictEqual(config.parserOptions.ecmaVersion, 2018);
assert.strictEqual(config.parserOptions.sourceType, "module");
assert.strictEqual(config.env.browser, true);
assert.strictEqual(config.extends, "eslint:recommended");
});
it("should disable semi", () => {
answers.semi = false;
const config = init.processAnswers(answers);
assert.deepStrictEqual(config.rules.semi, ["error", "never"]);
});
it("should enable react plugin", () => {
answers.framework = "react";
const config = init.processAnswers(answers);
assert.strictEqual(config.parserOptions.ecmaFeatures.jsx, true);
assert.strictEqual(config.parserOptions.ecmaVersion, 2018);
assert.deepStrictEqual(config.plugins, ["react"]);
});
it("should enable vue plugin", () => {
answers.framework = "vue";
const config = init.processAnswers(answers);
assert.strictEqual(config.parserOptions.ecmaVersion, 2018);
assert.deepStrictEqual(config.plugins, ["vue"]);
assert.deepStrictEqual(config.extends, ["eslint:recommended", "plugin:vue/essential"]);
});
it("should extend eslint:recommended", () => {
const config = init.processAnswers(answers);
assert.strictEqual(config.extends, "eslint:recommended");
});
it("should not use commonjs by default", () => {
const config = init.processAnswers(answers);
assert.isUndefined(config.env.commonjs);
});
it("should use commonjs when set", () => {
answers.moduleType = "commonjs";
const config = init.processAnswers(answers);
assert.isTrue(config.env.commonjs);
});
});
describe("guide", () => {
it("should support the google style guide", () => {
const config = { extends: "google" };
const modules = init.getModulesList(config);
assert.deepStrictEqual(config, { extends: "google", installedESLint: true });
assert.include(modules, "eslint-config-google@latest");
});
it("should support the airbnb style guide", () => {
const config = { extends: "airbnb" };
const modules = init.getModulesList(config);
assert.deepStrictEqual(config, { extends: "airbnb", installedESLint: true });
assert.include(modules, "eslint-config-airbnb@latest");
});
it("should support the airbnb base style guide", () => {
const config = { extends: "airbnb-base" };
const modules = init.getModulesList(config);
assert.deepStrictEqual(config, { extends: "airbnb-base", installedESLint: true });
assert.include(modules, "eslint-config-airbnb-base@latest");
});
it("should support the standard style guide", () => {
const config = { extends: "standard" };
const modules = init.getModulesList(config);
assert.deepStrictEqual(config, { extends: "standard", installedESLint: true });
assert.include(modules, "eslint-config-standard@latest");
});
it("should install required sharable config", () => {
const config = { extends: "google" };
init.installModules(init.getModulesList(config));
assert(npmInstallStub.calledOnce);
assert(npmInstallStub.firstCall.args[0].some(name => name.startsWith("eslint-config-google@")));
});
it("should install ESLint if not installed locally", () => {
const config = { extends: "google" };
init.installModules(init.getModulesList(config));
assert(npmInstallStub.calledOnce);
assert(npmInstallStub.firstCall.args[0].some(name => name.startsWith("eslint@")));
});
it("should install peerDependencies of the sharable config", () => {
const config = { extends: "airbnb" };
init.installModules(init.getModulesList(config));
assert(npmFetchPeerDependenciesStub.calledOnce);
assert(npmFetchPeerDependenciesStub.firstCall.args[0] === "eslint-config-airbnb@latest");
assert(npmInstallStub.calledOnce);
assert.deepStrictEqual(
npmInstallStub.firstCall.args[0],
[
"eslint-config-airbnb@latest",
"eslint@^3.19.0",
"eslint-plugin-jsx-a11y@^5.0.1",
"eslint-plugin-import@^2.2.0",
"eslint-plugin-react@^7.0.1"
]
);
});
describe("hasESLintVersionConflict (Note: peerDependencies always `eslint: \"^3.19.0\"` by stubs)", () => {
describe("if local ESLint is not found,", () => {
before(() => {
localESLintVersion = null;
});
it("should return false.", () => {
const result = init.hasESLintVersionConflict({ styleguide: "airbnb" });
assert.strictEqual(result, false);
});
});
describe("if local ESLint is 3.19.0,", () => {
before(() => {
localESLintVersion = "3.19.0";
});
it("should return false.", () => {
const result = init.hasESLintVersionConflict({ styleguide: "airbnb" });
assert.strictEqual(result, false);
});
});
describe("if local ESLint is 4.0.0,", () => {
before(() => {
localESLintVersion = "4.0.0";
});
it("should return true.", () => {
const result = init.hasESLintVersionConflict({ styleguide: "airbnb" });
assert.strictEqual(result, true);
});
});
describe("if local ESLint is 3.18.0,", () => {
before(() => {
localESLintVersion = "3.18.0";
});
it("should return true.", () => {
const result = init.hasESLintVersionConflict({ styleguide: "airbnb" });
assert.strictEqual(result, true);
});
});
});
it("should support the standard style guide with Vue.js", () => {
const config = {
plugins: ["vue"],
extends: ["plugin:vue/essential", "standard"]
};
const modules = init.getModulesList(config);
assert.include(modules, "eslint-plugin-vue@latest");
assert.include(modules, "eslint-config-standard@latest");
});
});
describe("auto", () => {
const completeSpy = sinon.spy();
let config;
before(() => {
const patterns = [
getFixturePath("lib"),
getFixturePath("tests")
].join(" ");
answers = {
purpose: "style",
source: "auto",
patterns,
env: ["browser"],
format: "JSON"
};
sinon.stub(console, "log"); // necessary to replace, because of progress bar
process.chdir(fixtureDir);
config = init.processAnswers(answers);
sinon.restore();
});
after(() => {
sinon.restore();
});
afterEach(() => {
process.chdir(originalDir);
sinon.restore();
});
it("should create a config", () => {
assert.isTrue(completeSpy.notCalled);
assert.ok(config);
});
it("should create the config based on examined files", () => {
assert.deepStrictEqual(config.rules.quotes, ["error", "double"]);
assert.strictEqual(config.rules.semi, "off");
});
it("should extend and not disable recommended rules", () => {
assert.strictEqual(config.extends, "eslint:recommended");
assert.notProperty(config.rules, "no-debugger");
});
it("should support new ES features if using later ES version", () => {
const filename = getFixturePath("new-es-features");
answers.patterns = filename;
answers.ecmaVersion = 2017;
process.chdir(fixtureDir);
config = init.processAnswers(answers);
});
it("should throw on fatal parsing error", () => {
const filename = getFixturePath("parse-error");
sinon.stub(autoconfig, "extendFromRecommended");
answers.patterns = filename;
process.chdir(fixtureDir);
assert.throws(() => {
config = init.processAnswers(answers);
}, "Parsing error: Unexpected token ;");
});
it("should throw if no files are matched from patterns", () => {
sinon.stub(autoconfig, "extendFromRecommended");
answers.patterns = "not-a-real-filename";
process.chdir(fixtureDir);
assert.throws(() => {
config = init.processAnswers(answers);
}, "No files matching 'not-a-real-filename' were found.");
});
});
});
});