replace mocha dependency (#3131)

package.json

@@ -28,7 +28,7 @@
  },
  "devDependencies": {
  "acorn": "~5.5.3",
- "mocha": "~3.5.1",
+ "colors": "~1.2.5",
  "semver": "~5.5.0"
  },
  "scripts": {

test/mocha.js

@@ -1,24 +1,102 @@
+var colors = require("colors");
 var fs = require("fs");
-var Mocha = require("mocha");
-var path = require("path");
 
-// Instantiate a Mocha instance
-var mocha = new Mocha({
- timeout: 5000
-});
-var testDir = __dirname + "/mocha/";
+var config = {
+ limit: 5000,
+ timeout: function(limit) {
+ this.limit = limit;
+ }
+};
+var tasks = [];
+var titles = [];
+describe = function(title, fn) {
+ config = Object.create(config);
+ titles.push(title);
+ fn.call(config);
+ titles.pop();
+ config = Object.getPrototypeOf(config);
+};
+it = function(title, fn) {
+ fn.limit = config.limit;
+ fn.titles = titles.slice();
+ fn.titles.push(title);
+ tasks.push(fn);
+};
 
-// Add each .js file to the Mocha instance
-fs.readdirSync(testDir).filter(function(file) {
+fs.readdirSync("test/mocha").filter(function(file) {
  return /\.js$/.test(file);
 }).forEach(function(file) {
- mocha.addFile(path.join(testDir, file));
+ require("./mocha/" + file);
 });
 
-module.exports = function() {
- mocha.run(function(failures) {
- if (failures) process.on("exit", function() {
- process.exit(failures);
+function log_titles(log, current, marker) {
+ var indent = "";
+ var writing = false;
+ for (var i = 0; i < current.length; i++, indent += " ") {
+ if (titles[i] != current[i]) writing = true;
+ if (writing) log(indent + (i == current.length - 1 && marker || "") + current[i]);
+ }
+ titles = current;
+}
+
+var errors = [];
+var total = tasks.length;
+titles = [];
+process.nextTick(function run() {
+ var task = tasks.shift();
+ if (task) try {
+ var elapsed = Date.now();
+ var timer;
+ var done = function() {
+ clearTimeout(timer);
+ done = function() {};
+ elapsed = Date.now() - elapsed;
+ if (elapsed > task.limit) {
+ throw new Error("Timed out: " + elapsed + "ms > " + task.limit + "ms");
+ }
+ log_titles(console.log, task.titles, colors.green('\u221A '));
+ process.nextTick(run);
+ };
+ if (task.length) {
+ task.timeout = function(limit) {
+ clearTimeout(timer);
+ task.limit = limit;
+ timer = setTimeout(function() {
+ raise(new Error("Timed out: exceeds " + limit + "ms"));
+ }, limit);
+ };
+ task.timeout(task.limit);
+ task.call(task, done);
+ } else {
+ task.timeout = config.timeout;
+ task.call(task);
+ done();
+ }
+ } catch (err) {
+ raise(err);
+ } else if (errors.length) {
+ console.error();
+ console.log(colors.red(errors.length + " test(s) failed!"));
+ titles = [];
+ errors.forEach(function(titles, index) {
+ console.error();
+ log_titles(console.error, titles, (index + 1) + ") ");
+ var lines = titles.error.stack.split('\n');
+ console.error(colors.red(lines[0]));
+ console.error(lines.slice(1).join("\n"));
  });
- });
-};
+ process.exit(1);
+ } else {
+ console.log();
+ console.log(colors.green(total + " test(s) passed."));
+ }
+
+ function raise(err) {
+ clearTimeout(timer);
+ done = function() {};
+ task.titles.error = err;
+ errors.push(task.titles);
+ log_titles(console.log, task.titles, colors.red('\u00D7 '));
+ process.nextTick(run);
+ }
+});

test/run-tests.js

@@ -18,9 +18,8 @@ if (failures) {
  console.error("!!! " + Object.keys(failed_files).join(", "));
  process.exit(1);
 }
-
-var mocha_tests = require("./mocha.js");
-mocha_tests();
+console.log();
+require("./mocha.js");
 
 /* -----[ utils ]----- */