hotspots: Unit test hotspots.js.

frontend_tests/node_tests/hotspots.js

@@ -0,0 +1,38 @@
+const hotspots = require('js/hotspots');
+
+const test_hotspots = [
+    {
+        delay: 5,
+        description: 'Click anywhere on a message to reply.',
+        name: 'click_to_reply',
+        title: 'Respond to a message',
+    },
+];
+
+const TEST_HOTSPOT_LOCATIONS = {
+    click_to_reply: {
+        element: '.selected_message .messagebox-content',
+        icon: {
+            top: -71,
+            left: 284,
+        },
+        popover: {
+            top: -213,
+            left: -176,
+            arrow: {
+                placement: 'bottom',
+                top: -5,
+                left: -5,
+            },
+        },
+    },
+};
+
+(function test_map_hotspot_to_DOM() {
+    const test_hotspot = test_hotspots[0];
+    assert.equal(test_hotspot.location, undefined);
+
+    hotspots.map_hotspots_to_DOM(test_hotspots, TEST_HOTSPOT_LOCATIONS);
+
+    assert.deepEqual(test_hotspot.location, TEST_HOTSPOT_LOCATIONS[test_hotspot.name]);
+}());