Add ol.geom.GeometryCollection

test/spec/ol/geom/geometrycollection.test.js

@@ -0,0 +1,110 @@
+goog.provide('ol.test.geom.GeometryCollection');
+
+
+describe('ol.geom.GeometryCollection', function() {
+
+  var outer = [[0, 0], [0, 10], [10, 10], [10, 0], [0, 0]],
+      inner1 = [[1, 1], [2, 1], [2, 2], [1, 2], [1, 1]],
+      inner2 = [[8, 8], [9, 8], [9, 9], [8, 9], [8, 8]];
+
+  describe('constructor', function() {
+
+    it('creates a geometry collection from an array of geometries', function() {
+      var point = new ol.geom.Point([10, 20]);
+      var line = new ol.geom.LineString([[10, 20], [30, 40]]);
+      var poly = new ol.geom.Polygon([outer, inner1, inner2]);
+      var multi = new ol.geom.GeometryCollection([point, line, poly]);
+      expect(multi).to.be.a(ol.geom.GeometryCollection);
+      expect(multi).to.be.a(ol.geom.Geometry);
+    });
+
+  });
+
+  describe('#getGeometries', function() {
+
+    it('returns a collection of geometries', function() {
+      var point = new ol.geom.Point([10, 20]);
+      var line = new ol.geom.LineString([[10, 20], [30, 40]]);
+      var poly = new ol.geom.Polygon([outer, inner1, inner2]);
+      var multi = new ol.geom.GeometryCollection([point, line, poly]);
+
+      var geometries = multi.getGeometries();
+      expect(geometries).to.be.an(Array);
+      expect(geometries).to.have.length(3);
+      expect(geometries[0]).to.be.a(ol.geom.Point);
+      expect(geometries[1]).to.be.a(ol.geom.LineString);
+      expect(geometries[2]).to.be.a(ol.geom.Polygon);
+    });
+
+  });
+
+  describe('#clone()', function() {
+
+    it('has a working clone method', function() {
+      var point = new ol.geom.Point([10, 20]);
+      var line = new ol.geom.LineString([[10, 20], [30, 40]]);
+      var poly = new ol.geom.Polygon([outer, inner1, inner2]);
+      var multi = new ol.geom.GeometryCollection([point, line, poly]);
+      var clone = multi.clone();
+      expect(clone).to.not.be(multi);
+      var geometries = clone.getGeometries();
+      expect(geometries[0].getCoordinates()).to.eql([10, 20]);
+      expect(geometries[1].getCoordinates()).to.eql([[10, 20], [30, 40]]);
+      expect(geometries[2].getCoordinates()).to.eql([outer, inner1, inner2]);
+    });
+
+  });
+
+  describe('#getExtent()', function() {
+
+    it('returns the bounding extent', function() {
+      var point = new ol.geom.Point([10, 2]);
+      var line = new ol.geom.LineString([[1, 20], [30, 40]]);
+      var multi = new ol.geom.GeometryCollection([point, line]);
+      var extent = multi.getExtent();
+      expect(extent[0]).to.be(1);
+      expect(extent[2]).to.be(30);
+      expect(extent[1]).to.be(2);
+      expect(extent[3]).to.be(40);
+    });
+
+  });
+
+  describe('#setGeometries', function() {
+
+    var line, multi, point, poly;
+    beforeEach(function() {
+      point = new ol.geom.Point([10, 20]);
+      line = new ol.geom.LineString([[10, 20], [30, 40]]);
+      poly = new ol.geom.Polygon([outer, inner1, inner2]);
+      multi = new ol.geom.GeometryCollection([point, line, poly]);
+    });
+
+    it('fires a change event', function() {
+      var listener = sinon.spy();
+      multi.on('change', listener);
+      point.setCoordinates([15, 25]);
+      expect(listener.calledOnce).to.be(false);
+      multi.setGeometries([point, line, poly]);
+      expect(listener.calledOnce).to.be(true);
+    });
+
+    it('updates the extent', function() {
+      expect(multi.getExtent()).to.eql([0, 0, 30, 40]);
+      line.setCoordinates([[10, 20], [300, 400]]);
+      expect(multi.getExtent()).to.eql([0, 0, 30, 40]);
+      multi.setGeometries([point, line, poly]);
+      expect(multi.getExtent()).to.eql([0, 0, 300, 400]);
+    });
+
+  });
+
+});
+
+
+goog.require('ol.Collection');
+goog.require('ol.geom.Geometry');
+goog.require('ol.geom.GeometryCollection');
+goog.require('ol.geom.LineString');
+goog.require('ol.geom.Point');
+goog.require('ol.geom.Polygon');