test(interaction): add interaction spec for mousedown event + formats 4 spaces to 2

Author: devversion

src/core/services/interaction/interaction.spec.js

@@ -3,15 +3,24 @@ describe("$mdInteraction", function() {
 
   describe("last interaction type", function() {
 
-      it("imitates a basic keyboard interaction and checks it", inject(function($mdInteraction) {
+    it("imitates a basic keyboard interaction and checks it", inject(function($mdInteraction) {
 
-        var event = document.createEvent('Event');
-        event.keyCode = 37;
-        event.initEvent('keydown', false, true);
-        document.body.dispatchEvent(event);
+      var event = document.createEvent('Event');
+      event.keyCode = 37;
+      event.initEvent('keydown', false, true);
+      document.body.dispatchEvent(event);
 
-        expect($mdInteraction.getLastInteractionType()).toBe('keyboard');
-      }));
+      expect($mdInteraction.getLastInteractionType()).toBe('keyboard');
+    }));
+
+    it("dispatches a mousedown event on the document body and checks it", inject(function($mdInteraction) {
+
+      var event = document.createEvent("MouseEvent");
+      event.initMouseEvent("mousedown", true, true, window, null, 0, 0, 0, 0, false, false, false, false, 0, null);
+      document.body.dispatchEvent(event);
+
+      expect($mdInteraction.getLastInteractionType()).toBe("mouse");
+    }));
 
   });
 });