1 files changed, 62 insertions, 0 deletions
diff --git a/devtools/client/animationinspector/test/unit/test_formatStopwatchTime.js b/devtools/client/animationinspector/test/unit/test_formatStopwatchTime.js
new file mode 100644
index 000000000..12584a2a4
--- /dev/null
+++ b/devtools/client/animationinspector/test/unit/test_formatStopwatchTime.js
@@ -0,0 +1,62 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+var Cu = Components.utils;
+const {require} = Cu.import("resource://devtools/shared/Loader.jsm", {});
+const {formatStopwatchTime} = require("devtools/client/animationinspector/utils");
+
+const TEST_DATA = [{
+  desc: "Formatting 0",
+  time: 0,
+  expected: "00:00.000"
+}, {
+  desc: "Formatting null",
+  time: null,
+  expected: "00:00.000"
+}, {
+  desc: "Formatting undefined",
+  time: undefined,
+  expected: "00:00.000"
+}, {
+  desc: "Formatting a small number of ms",
+  time: 13,
+  expected: "00:00.013"
+}, {
+  desc: "Formatting a slightly larger number of ms",
+  time: 500,
+  expected: "00:00.500"
+}, {
+  desc: "Formatting 1 second",
+  time: 1000,
+  expected: "00:01.000"
+}, {
+  desc: "Formatting a number of seconds",
+  time: 1532,
+  expected: "00:01.532"
+}, {
+  desc: "Formatting a big number of seconds",
+  time: 58450,
+  expected: "00:58.450"
+}, {
+  desc: "Formatting 1 minute",
+  time: 60000,
+  expected: "01:00.000"
+}, {
+  desc: "Formatting a number of minutes",
+  time: 263567,
+  expected: "04:23.567"
+}, {
+  desc: "Formatting a large number of minutes",
+  time: 1000 * 60 * 60 * 3,
+  expected: "180:00.000"
+}];
+
+function run_test() {
+  for (let {desc, time, expected} of TEST_DATA) {
+    equal(formatStopwatchTime(time), expected, desc);
+  }
+}