Introduce ol.format.MVT

test/spec/ol/format/mvtformat.test.js

@@ -0,0 +1,68 @@
+goog.provide('ol.test.format.MVT');
+
+
+describe('ol.format.MVT', function() {
+
+  var data;
+  beforeEach(function(done) {
+    var xhr = new XMLHttpRequest();
+    xhr.open('GET', 'spec/ol/data/14-8938-5680.vector.pbf');
+    xhr.responseType = 'arraybuffer';
+    xhr.onload = function() {
+      data = xhr.response;
+      done();
+    };
+    xhr.send();
+  });
+
+  describe('#readFeatures', function() {
+
+    it('parses only specified layers', function() {
+      var format = new ol.format.MVT({layers: ['water']});
+      var features = format.readFeatures(data);
+      expect(features.length).to.be(10);
+    });
+
+    it('parses geometries correctly', function() {
+      var format = new ol.format.MVT({layers: ['poi_label']});
+      var pbf = new ol.ext.pbf(data);
+      var tile = new ol.ext.vectortile.VectorTile(pbf);
+      var geometry, rawGeometry;
+
+      rawGeometry = tile.layers['poi_label'].feature(0).loadGeometry();
+      geometry = format.readFeatures(data)[0]
+          .getGeometry();
+      expect(geometry.getType()).to.be('Point');
+      expect(geometry.getCoordinates())
+          .to.eql([rawGeometry[0][0].x, rawGeometry[0][0].y]);
+
+      rawGeometry = tile.layers['water'].feature(0).loadGeometry();
+      format.setLayers(['water']);
+      geometry = format.readFeatures(data)[0]
+          .getGeometry();
+      expect(geometry.getType()).to.be('Polygon');
+      expect(rawGeometry[0].length)
+          .to.equal(geometry.getCoordinates()[0].length);
+      expect(geometry.getCoordinates()[0][0])
+          .to.eql([rawGeometry[0][0].x, rawGeometry[0][0].y]);
+
+      rawGeometry = tile.layers['barrier_line'].feature(0).loadGeometry();
+      format.setLayers(['barrier_line']);
+      geometry = format.readFeatures(data)[0]
+          .getGeometry();
+      expect(geometry.getType()).to.be('MultiLineString');
+      expect(rawGeometry[1].length)
+          .to.equal(geometry.getCoordinates()[1].length);
+      expect(geometry.getCoordinates()[1][0])
+          .to.eql([rawGeometry[1][0].x, rawGeometry[1][0].y]);
+    });
+
+  });
+
+});
+
+
+goog.require('ol.Feature');
+goog.require('ol.ext.pbf');
+goog.require('ol.ext.vectortile');
+goog.require('ol.format.MVT');