Add ol.proj.EPSG21781

test/spec/ol/proj/epsg21781projection.test.js

@@ -0,0 +1,50 @@
+goog.provide('ol.test.proj.EPSG21781');
+
+
+describe('ol.proj.EPSG21781', function() {
+
+  var epsg21781;
+  beforeEach(function() {
+    ol.proj.EPSG21781.add();
+    epsg21781 = ol.proj.get('EPSG:21781');
+    expect(epsg21781).to.be.an(ol.Projection);
+  });
+
+  it('does not lose too much accuracy when round-tripping', function() {
+    var extent = epsg21781.getExtent();
+    var roundTripped, x, y;
+    for (x = extent[0]; x < extent[1]; x += 50000) {
+      for (y = extent[2]; y < extent[3]; y += 50000) {
+        roundTripped = ol.proj.EPSG21781.fromEPSG4326(
+            ol.proj.EPSG21781.toEPSG4326([x, y]));
+        expect(roundTripped).to.be.an(Array);
+        expect(roundTripped).to.have.length(2);
+        expect(roundTripped[0]).to.roughlyEqual(x, 1e1);
+        expect(roundTripped[1]).to.roughlyEqual(y, 1e1);
+      }
+    }
+  });
+
+  it('transforms from EPSG:21781 to EPSG:4326', function() {
+    var wgs84 = ol.proj.transform(
+        [660389.515487, 185731.630396], 'EPSG:21781', 'EPSG:4326');
+    expect(wgs84).to.be.an(Array);
+    expect(wgs84).to.have.length(2);
+    expect(wgs84[0]).to.roughlyEqual(8.23, 1e-3);
+    expect(wgs84[1]).to.roughlyEqual(46.82, 1e-3);
+  });
+
+  it('transforms from EPSG:4326 to EPSG:21781', function() {
+    var ch1903 = ol.proj.transform([8.23, 46.82], 'EPSG:4326', 'EPSG:21781');
+    expect(ch1903).to.be.an(Array);
+    expect(ch1903).to.have.length(2);
+    expect(ch1903[0]).to.roughlyEqual(660389.515487, 1);
+    expect(ch1903[1]).to.roughlyEqual(185731.630396, 1);
+  });
+
+});
+
+
+goog.require('ol.Projection');
+goog.require('ol.proj');
+goog.require('ol.proj.EPSG21781');