feat(utils.spec.qml): add tests on `clearTimeout`, `isString`

tests/ui/scripts/Utils/utils.js

@@ -50,8 +50,6 @@ function openWindow (window, parent, options) {
   object.show()
 }
 
-// -------------------------------------------------------------------
-
 // Display a simple ConfirmDialog component.
 // Wrap the openWindow function.
 function openConfirmDialog (parent, options) {
@@ -71,6 +69,15 @@ function openConfirmDialog (parent, options) {
 
 // -------------------------------------------------------------------
 
+function _computeOptimizedCb (func, context) {
+  return (context != null)
+    ? (function () {
+      return func.apply(context, arguments)
+    }) : func
+}
+
+// -------------------------------------------------------------------
+
 function snakeToCamel (s) {
   return s.replace(/(\_\w)/g, function (matches) {
     return matches[1].toUpperCase()
@@ -97,7 +104,21 @@ function setTimeout (delay, cb) {
 }
 
 function clearTimeout (timer) {
-  timer.destroy() // Unnecessary call: `timer.stop()`
+  timer.stop() // NECESSARY.
+  timer.destroy()
+}
+
+// -------------------------------------------------------------------
+
+function times (n, cb, context) {
+  var arr = Array(Math.max(0, n))
+  cb = _computeOptimizedCb(cb, context, 1)
+
+  for (var i = 0; i < n; i++) {
+    arr[i] = cb(i)
+  }
+
+  return arr
 }
 
 // -------------------------------------------------------------------

tests/ui/scripts/Utils/utils.spec.qml

@@ -25,6 +25,8 @@ TestCase {
     compare(Utils.snakeToCamel(data.input), data.output)
   }
 
+  // -----------------------------------------------------------------
+
   function test_setTimeoutWithoutParent () {
     try {
       Utils.setTimeout(0, function () {
@@ -58,4 +60,54 @@ TestCase {
       fail('`setTimeout` failed because callback it was not called in due course')
     }
   }
+
+  // -----------------------------------------------------------------
+
+  function test_clearTimeout_data () {
+    return [
+      { time: 0 },
+      { time: 100 }
+    ]
+  }
+
+  function test_clearTimeout (data) {
+    var failed = false
+    var timeout = Utils.setTimeout.call(testCase, data.time, function () {
+      failed = true
+    })
+
+    // Simulate time
+    Utils.times(500000, function (i) {
+      // Nothing.
+    })
+
+    if (failed) {
+      fail('`setTimeout` callback was called')
+    }
+
+    Utils.clearTimeout(timeout)
+    wait(100)
+
+    if (failed) {
+      fail('`setTimeout` callback was called')
+    }
+  }
+
+  // -----------------------------------------------------------------
+
+  function test_isString_data () {
+    return [
+      { input: 'foo', output: true },
+      { input: Object('bar'), output: true },
+      { input: [ 0 ], output: false },
+      { input: /baz/, output: false },
+      { input: new Error, output: false },
+      { input: true, output: false },
+      { input: 42, output: false }
+    ]
+  }
+
+  function test_isString (data) {
+    compare(Utils.isString(data.input), data.output)
+  }
 }