Use Sinon to stub the logger instead of manual stubbing

src/log.js

@@ -13,30 +13,27 @@ function timestamp() {
 	return colors.dim(time);
 }
 
+module.exports = {
 	/* eslint-disable no-console */
-exports.error = function(...args) {
+	error(...args) {
 		console.error(timestamp(), colors.red("[ERROR]"), ...args);
-};
-
-exports.warn = function(...args) {
+	},
+	warn(...args) {
 		console.error(timestamp(), colors.yellow("[WARN]"), ...args);
-};
-
-exports.info = function(...args) {
+	},
+	info(...args) {
 		console.log(timestamp(), colors.blue("[INFO]"), ...args);
-};
-
-exports.debug = function(...args) {
+	},
+	debug(...args) {
 		console.log(timestamp(), colors.green("[DEBUG]"), ...args);
-};
-
-exports.raw = function(...args) {
+	},
+	raw(...args) {
 		console.log(...args);
-};
-
+	},
 	/* eslint-enable no-console */
 
-exports.prompt = (options, callback) => {
+	prompt(options, callback) {
 		options.prompt = [timestamp(), colors.cyan("[PROMPT]"), options.text].join(" ");
 		read(options, callback);
+	},
 };

test/plugins/packages/indexTest.js

@@ -1,24 +1,21 @@
 "use strict";
 
 const expect = require("chai").expect;
+const stub = require("sinon").stub;
 const TestUtil = require("../../util");
 
 let packages;
 
 describe("packages", function() {
-	let originalLogInfo;
-
 	beforeEach(function() {
-		originalLogInfo = log.info;
-
-		log.info = () => {};
+		stub(log, "info");
 
 		delete require.cache[require.resolve("../../../src/plugins/packages")];
 		packages = require("../../../src/plugins/packages");
 	});
 
 	afterEach(function() {
-		log.info = originalLogInfo;
+		log.info.restore();
 	});
 
 	describe(".getStylesheets", function() {
@@ -51,8 +48,9 @@ describe("packages", function() {
 	describe(".loadPackages", function() {
 		it("should display report about loading packages", function() {
 			// Mock `log.info` to extract its effect into a string
+			log.info.restore();
 			let stdout = "";
-			log.info = TestUtil.mockLogger((str) => stdout += str);
+			stub(log, "info").callsFake(TestUtil.sanitizeLog((str) => stdout += str));
 
 			packages.loadPackages();
 

test/src/command-line/utilsTest.js

@@ -1,25 +1,20 @@
 "use strict";
 
 const expect = require("chai").expect;
+const stub = require("sinon").stub;
 const TestUtil = require("../../util");
 const Utils = require("../../../src/command-line/utils");
 
 describe("Utils", function() {
 	describe(".extraHelp", function() {
-		let originalRaw;
-
-		beforeEach(function() {
-			originalRaw = log.raw;
-		});
-
 		afterEach(function() {
-			log.raw = originalRaw;
+			log.raw.restore();
 		});
 
 		it("should start and end with empty lines to display correctly with --help", function() {
 			// Mock `log.raw` to extract its effect into an array
 			const stdout = [];
-			log.raw = TestUtil.mockLogger((str) => stdout.push(str));
+			stub(log, "raw").callsFake(TestUtil.sanitizeLog((str) => stdout.push(str)));
 
 			Utils.extraHelp();
 
@@ -36,7 +31,7 @@ describe("Utils", function() {
 		it("should contain information about THELOUNGE_HOME env var", function() {
 			// Mock `log.raw` to extract its effect into a concatenated string
 			let stdout = "";
-			log.raw = TestUtil.mockLogger((str) => stdout += str);
+			stub(log, "raw").callsFake(TestUtil.sanitizeLog((str) => stdout += str));
 
 			Utils.extraHelp();
 
@@ -119,18 +114,12 @@ describe("Utils", function() {
 			});
 
 			describe("when given the same key multiple times", function() {
-				let originalWarn;
-
-				beforeEach(function() {
-					originalWarn = log.warn;
-				});
-
 				afterEach(function() {
-					log.warn = originalWarn;
+					log.warn.restore();
 				});
 
 				it("should not override options", function() {
-					log.warn = () => {};
+					stub(log, "warn");
 
 					expect(Utils.parseConfigOptions("foo=baz", {foo: "bar"}))
 						.to.deep.equal({foo: "bar"});
@@ -138,7 +127,7 @@ describe("Utils", function() {
 
 				it("should display a warning", function() {
 					let warning = "";
-					log.warn = TestUtil.mockLogger((str) => warning += str);
+					stub(log, "warn").callsFake(TestUtil.sanitizeLog((str) => warning += str));
 
 					Utils.parseConfigOptions("foo=bar", {foo: "baz"});
 

test/util.js

@@ -24,7 +24,7 @@ MockClient.prototype.createMessage = function(opts) {
 	return message;
 };
 
-function mockLogger(callback) {
+function sanitizeLog(callback) {
 	return function(...args) {
 		// Concats and removes ANSI colors. See https://stackoverflow.com/a/29497680
 		const stdout = args.join(" ").replace(
@@ -51,5 +51,5 @@ module.exports = {
 	createWebserver() {
 		return express();
 	},
-	mockLogger,
+	sanitizeLog,
 };