Drag zoom interaction tests

test/spec/ol/interaction/dragzoominteraction.test.js

@@ -0,0 +1,85 @@
+goog.provide('ol.test.interaction.DragZoom');
+
+describe('ol.interaction.DragZoom', function() {
+
+  var target, map, source;
+
+  var width = 360;
+  var height = 180;
+
+  beforeEach(function(done) {
+    target = document.createElement('div');
+    var style = target.style;
+    style.position = 'absolute';
+    style.left = '-1000px';
+    style.top = '-1000px';
+    style.width = width + 'px';
+    style.height = height + 'px';
+    document.body.appendChild(target);
+    source = new ol.source.Vector();
+    var layer = new ol.layer.Vector({source: source});
+    map = new ol.Map({
+      target: target,
+      layers: [layer],
+      view: new ol.View({
+        projection: 'EPSG:4326',
+        center: [0, 0],
+        resolution: 1
+      })
+    });
+    map.on('postrender', function() {
+      done();
+    });
+  });
+
+  afterEach(function() {
+    goog.dispose(map);
+    document.body.removeChild(target);
+  });
+
+  describe('constructor', function() {
+
+    it('can be constructed without arguments', function() {
+      var instance = new ol.interaction.DragZoom();
+      expect(instance).to.be.an(ol.interaction.DragZoom);
+    });
+
+  });
+
+  describe('#onBoxEnd()', function() {
+
+    it('centers the view on the box geometry', function(done) {
+      var interaction = new ol.interaction.DragZoom({
+        duration: 10
+      });
+      map.addInteraction(interaction);
+
+      var box = new ol.render.Box();
+      var extent = [-110, 40, -90, 60];
+      box.geometry_ = ol.geom.Polygon.fromExtent(extent);
+      interaction.box_ = box;
+
+      interaction.onBoxEnd();
+      setTimeout(function() {
+        var view = map.getView();
+        var center = view.getCenter();
+        expect(center).to.eql(ol.extent.getCenter(extent));
+        done();
+      }, 50);
+
+    });
+
+  });
+
+
+});
+
+goog.require('goog.dispose');
+goog.require('ol.Map');
+goog.require('ol.View');
+goog.require('ol.extent');
+goog.require('ol.geom.Polygon');
+goog.require('ol.interaction.DragZoom');
+goog.require('ol.layer.Vector');
+goog.require('ol.render.Box');
+goog.require('ol.source.Vector');