Add unit tests for all utility modules. Re GH-103

test/unit/util_timer.js

@@ -0,0 +1,42 @@
+var test = require('tap').test;
+var Timer = require('../../src/util/timer');
+
+test('spec', function (t) {
+    var timer = new Timer();
+
+    t.type(Timer, 'function');
+    t.type(timer, 'object');
+
+    t.type(timer.startTime, 'number');
+    t.type(timer.time, 'function');
+    t.type(timer.start, 'function');
+    t.type(timer.timeElapsed, 'function');
+
+    t.end();
+});
+
+test('time', function (t) {
+    var timer = new Timer();
+    var time = timer.time();
+
+    t.ok(Date.now() >= time);
+    t.end();
+});
+
+test('start / timeElapsed', function (t) {
+    var timer = new Timer();
+    var delay = 100;
+    var threshold = 1000 / 60;  // 60 hz
+
+    // Start timer
+    timer.start();
+
+    // Wait and measure timer
+    setTimeout(function () {
+        var timeElapsed = timer.timeElapsed();
+        t.ok(timeElapsed >= 0);
+        t.ok(timeElapsed >= (delay - threshold) &&
+             timeElapsed <= (delay + threshold));
+        t.end();
+    }, delay);
+});