Add tests for ol.reproj.*

test/spec/ol/reproj/image.test.js

@@ -0,0 +1,59 @@
+goog.provide('ol.test.reproj.Image');
+
+describe('ol.reproj.Image', function() {
+  function createImage(pixelRatio) {
+    return new ol.reproj.Image(
+        ol.proj.get('EPSG:3857'), ol.proj.get('EPSG:4326'),
+        [-180, -85, 180, 85], 10, pixelRatio,
+        function(extent, resolution, pixelRatio) {
+          return new ol.Image(extent, resolution, pixelRatio, [],
+              'data:image/gif;base64,R0lGODlhAQABAAAAACwAAAAAAQABAAA=', '',
+              function(image, src) {
+                image.getImage().src = src;
+              });
+        });
+  }
+
+  it('changes state as expected', function(done) {
+    var image = createImage(1);
+    expect(image.getState()).to.be(ol.ImageState.IDLE);
+    image.listen('change', function() {
+      if (image.getState() == ol.ImageState.LOADED) {
+        done();
+      }
+    });
+    image.load();
+  });
+
+  it('returns correct canvas size', function(done) {
+    var image = createImage(1);
+    image.listen('change', function() {
+      if (image.getState() == ol.ImageState.LOADED) {
+        var canvas = image.getImage();
+        expect(canvas.width).to.be(36);
+        expect(canvas.height).to.be(17);
+        done();
+      }
+    });
+    image.load();
+  });
+
+  it('respects pixelRatio', function(done) {
+    var image = createImage(2);
+    image.listen('change', function() {
+      if (image.getState() == ol.ImageState.LOADED) {
+        var canvas = image.getImage();
+        expect(canvas.width).to.be(72);
+        expect(canvas.height).to.be(34);
+        done();
+      }
+    });
+    image.load();
+  });
+});
+
+
+goog.require('ol.Image');
+goog.require('ol.ImageState');
+goog.require('ol.proj');
+goog.require('ol.reproj.Image');