Add tests for ol.reproj.*

2015-07-20 16:30:30 +02:00
parent 0c48a560b2
commit c899100dab
4 changed files with 261 additions and 0 deletions
--- a/test/spec/ol/reproj/triangulation.test.js
+++ b/test/spec/ol/reproj/triangulation.test.js
@@ -0,0 +1,58 @@
+goog.provide('ol.test.reproj.Triangulation');
+
+describe('ol.reproj.Triangulation', function() {
+  beforeEach(function() {
+    proj4.defs('EPSG:27700', '+proj=tmerc +lat_0=49 +lon_0=-2 ' +
+        '+k=0.9996012717 +x_0=400000 +y_0=-100000 +ellps=airy ' +
+        '+towgs84=446.448,-125.157,542.06,0.15,0.247,0.842,-20.489 ' +
+        '+units=m +no_defs');
+    var proj27700 = ol.proj.get('EPSG:27700');
+    proj27700.setExtent([0, 0, 700000, 1300000]);
+  });
+
+  afterEach(function() {
+    delete proj4.defs['EPSG:27700'];
+  });
+
+  describe('constructor', function() {
+    it('is trivial for identity', function() {
+      var proj4326 = ol.proj.get('EPSG:4326');
+      var triangulation = new ol.reproj.Triangulation(proj4326, proj4326,
+          [20, 20, 30, 30], [-180, -90, 180, 90], 0);
+      expect(triangulation.getTriangles().length).to.be(2);
+    });
+
+    it('is empty when outside source extent', function() {
+      var proj4326 = ol.proj.get('EPSG:4326');
+      var proj27700 = ol.proj.get('EPSG:27700');
+      var triangulation = new ol.reproj.Triangulation(proj27700, proj4326,
+          [0, 0, 10, 10], proj27700.getExtent(), 0);
+      expect(triangulation.getTriangles().length).to.be(0);
+    });
+
+    it('can handle null source extent', function() {
+      var proj4326 = ol.proj.get('EPSG:4326');
+      var triangulation = new ol.reproj.Triangulation(proj4326, proj4326,
+          [20, 20, 30, 30], null, 0);
+      expect(triangulation.getTriangles().length).to.be(2);
+    });
+
+    it('can handle wrapX in source', function() {
+      proj4.defs('merc_180', '+proj=merc +lon_0=180 +units=m +no_defs');
+      var proj_ = ol.proj.get('merc_180');
+      proj_.setExtent([-20026376.39, -20048966.10, 20026376.39, 20048966.10]);
+
+      var proj4326 = ol.proj.get('EPSG:4326');
+      var triangulation = new ol.reproj.Triangulation(proj4326, proj_,
+          proj_.getExtent(), [-180, -90, 180, 90], 0);
+      expect(triangulation.getWrapsXInSource()).to.be(true);
+      var triExtent = triangulation.calculateSourceExtent();
+      expect(triExtent[2] < triExtent[0]).to.be(true);
+    });
+
+  });
+});
+
+
+goog.require('ol.proj');
+goog.require('ol.reproj.Triangulation');