From ac1d7572e493be5ce1c86c0abc02695a0816dafb Mon Sep 17 00:00:00 2001
From: Andreas Hocevar <andreas.hocevar@gmail.com>
Date: Mon, 1 Feb 2016 09:55:35 +0100
Subject: [PATCH] Add tests for scroll zoom

---
 .../mousewheelzoominteraction.test.js         | 136 ++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 test/spec/ol/interaction/mousewheelzoominteraction.test.js

diff --git a/test/spec/ol/interaction/mousewheelzoominteraction.test.js b/test/spec/ol/interaction/mousewheelzoominteraction.test.js
new file mode 100644
index 0000000000..79e52d90dc
--- /dev/null
+++ b/test/spec/ol/interaction/mousewheelzoominteraction.test.js
@@ -0,0 +1,136 @@
+/*global createMapDiv, disposeMap*/
+goog.provide('ol.test.interaction.MouseWheelZoom');
+
+
+describe('ol.interaction.MouseWheelZoom', function() {
+  var map;
+
+  beforeEach(function() {
+    map = new ol.Map({
+      target: createMapDiv(100, 100),
+      view: new ol.View({
+        center: [0, 0],
+        resolutions: [2, 1, 0.5],
+        zoom: 1
+      })
+    });
+    map.renderSync();
+  });
+  afterEach(function() {
+    disposeMap(map);
+  });
+
+  describe('handleEvent()', function() {
+    it('[wheel] works on Firefox in DOM_DELTA_PIXEL mode', function(done) {
+      var origHasFirefox = ol.has.FIREFOX;
+      ol.has.FIREFOX = true;
+      var spy = sinon.spy(ol.interaction.Interaction, 'zoomByDelta');
+      map.once('postrender', function() {
+        expect(spy.getCall(0).args[2]).to.be(-1);
+        expect(spy.getCall(0).args[3]).to.eql([0, 0]);
+        ol.interaction.Interaction.zoomByDelta.restore();
+        ol.has.FIREFOX = origHasFirefox;
+        done();
+      });
+      var event = new ol.MapBrowserEvent(ol.events.EventType.WHEEL, map, {
+        type: ol.events.EventType.WHEEL,
+        deltaMode: WheelEvent.DOM_DELTA_PIXEL,
+        deltaY: ol.has.DEVICE_PIXEL_RATIO,
+        target: map.getViewport(),
+        preventDefault: ol.events.Event.prototype.preventDefault
+      });
+      event.coordinate = [0, 0];
+      map.handleMapBrowserEvent(event);
+    });
+    it('[wheel] works in DOM_DELTA_PIXEL mode', function(done) {
+      var origHasFirefox = ol.has.FIREFOX;
+      ol.has.FIREFOX = false;
+      var spy = sinon.spy(ol.interaction.Interaction, 'zoomByDelta');
+      map.once('postrender', function() {
+        expect(spy.getCall(0).args[2]).to.be(-1);
+        expect(spy.getCall(0).args[3]).to.eql([0, 0]);
+        ol.interaction.Interaction.zoomByDelta.restore();
+        ol.has.FIREFOX = origHasFirefox;
+        done();
+      });
+      var event = new ol.MapBrowserEvent(ol.events.EventType.WHEEL, map, {
+        type: ol.events.EventType.WHEEL,
+        deltaMode: WheelEvent.DOM_DELTA_PIXEL,
+        deltaY: 1,
+        target: map.getViewport(),
+        preventDefault: ol.events.Event.prototype.preventDefault
+      });
+      event.coordinate = [0, 0];
+      map.handleMapBrowserEvent(event);
+    });
+    it('[wheel] works in DOM_DELTA_LINE mode', function(done) {
+      var spy = sinon.spy(ol.interaction.Interaction, 'zoomByDelta');
+      map.once('postrender', function() {
+        expect(spy.getCall(0).args[2]).to.be(-1);
+        expect(spy.getCall(0).args[3]).to.eql([0, 0]);
+        ol.interaction.Interaction.zoomByDelta.restore();
+        done();
+      });
+      var event = new ol.MapBrowserEvent(ol.events.EventType.WHEEL, map, {
+        type: ol.events.EventType.WHEEL,
+        deltaMode: WheelEvent.DOM_DELTA_LINE,
+        deltaY: 1 / 40,
+        target: map.getViewport(),
+        preventDefault: ol.events.Event.prototype.preventDefault
+      });
+      event.coordinate = [0, 0];
+      map.handleMapBrowserEvent(event);
+    });
+    it('[mousewheel] works on Safari', function(done) {
+      var origHasSafari = ol.has.SAFARI;
+      ol.has.SAFARI = true;
+      var spy = sinon.spy(ol.interaction.Interaction, 'zoomByDelta');
+      map.once('postrender', function() {
+        expect(spy.getCall(0).args[2]).to.be(-1);
+        expect(spy.getCall(0).args[3]).to.eql([0, 0]);
+        ol.interaction.Interaction.zoomByDelta.restore();
+        ol.has.SAFARI = origHasSafari;
+        done();
+      });
+      var event = new ol.MapBrowserEvent(ol.events.EventType.MOUSEWHEEL, map, {
+        type: ol.events.EventType.MOUSEWHEEL,
+        wheelDeltaY: -3,
+        target: map.getViewport(),
+        preventDefault: ol.events.Event.prototype.preventDefault
+      });
+      event.coordinate = [0, 0];
+      map.handleMapBrowserEvent(event);
+    });
+    it('[mousewheel] works on other browsers', function(done) {
+      var origHasSafari = ol.has.SAFARI;
+      ol.has.SAFARI = false;
+      var spy = sinon.spy(ol.interaction.Interaction, 'zoomByDelta');
+      map.once('postrender', function() {
+        expect(spy.getCall(0).args[2]).to.be(-1);
+        expect(spy.getCall(0).args[3]).to.eql([0, 0]);
+        ol.interaction.Interaction.zoomByDelta.restore();
+        ol.has.SAFARI = origHasSafari;
+        done();
+      });
+      var event = new ol.MapBrowserEvent(ol.events.EventType.MOUSEWHEEL, map, {
+        type: ol.events.EventType.MOUSEWHEEL,
+        wheelDeltaY: -1,
+        target: map.getViewport(),
+        preventDefault: ol.events.Event.prototype.preventDefault
+      });
+      event.coordinate = [0, 0];
+      map.handleMapBrowserEvent(event);
+    });
+  });
+
+});
+
+
+goog.require('goog.object');
+goog.require('ol.Map');
+goog.require('ol.MapBrowserEvent');
+goog.require('ol.View');
+goog.require('ol.events.Event');
+goog.require('ol.events.EventType');
+goog.require('ol.interaction.Interaction');
+goog.require('ol.interaction.MouseWheelZoom');