test crop image

test/unit/image-editor.js

@@ -4,7 +4,22 @@ QUnit.test('should load image', function( assert ) {
   var done = assert.async();
   var editor = new ImageEditor('canvas');
   editor.loadImage('fixtures/dog.jpg', function() {
-    assert.ok(editor.canvas.getImage());
+    assert.ok(editor.canvas.getImage(), 'image loaded');
+    done();
+  });
+});
+
+QUnit.test('should crop image', function( assert ) {
+  var done = assert.async();
+  var editor = new ImageEditor('canvas');
+  editor.loadImage('fixtures/dog.jpg', function() {
+    editor.crop(400, 100, 'cm');
+    var data = editor.canvas.getViewport().getData();
+    assert.equal(data.dim.width, 400, 'sets crop width');
+    assert.equal(data.dim.height, 100, 'sets crop height');
+    assert.equal(data.dim.units, 'cm', 'set units');
+    assert.equal(data.width, 1049, 'sets image width');
+    assert.equal(data.height, 262.25, 'sets image height');
     done();
   });
 });