Fixed up the media uploader property editor so that it doesn't store any json, this leaves it as fully backwards compatible with 6.x < but also still allows us to upload multiple images if we want.

src/Umbraco.Web.UI.Client/test/unit/common/services/umb-image-helper.spec.js

@@ -0,0 +1,38 @@
+describe('icon helper tests', function () {
+    var umbImageHelper;
+
+    beforeEach(module('umbraco.services'));
+    beforeEach(module('umbraco.mocks'));
+
+    beforeEach(inject(function ($injector) {
+        umbImageHelper = $injector.get('umbImageHelper');
+    }));
+
+    describe('basic utility methods return correct values', function () {
+
+        it('detects an image based file', function () {
+
+            var image1 = "a-jpeg.jpg";
+            var image2 = "a-png.png";
+            var image3 = "thisisagif.blah.gif";
+            var doc1 = "anormaldocument.doc";
+            
+            expect(umbImageHelper.detectIfImageByExtension(image1)).toBe(true);
+            expect(umbImageHelper.detectIfImageByExtension(image2)).toBe(true);
+            expect(umbImageHelper.detectIfImageByExtension(image3)).toBe(true);
+            expect(umbImageHelper.detectIfImageByExtension(doc1)).toBe(false);
+        });
+        
+        it('gets a thumbnail path', function () {
+            
+            var image1 = "a-jpeg.jpg";
+            var image2 = "a-png.png";
+            var image3 = "thisisagif.blah.gif";
+
+            expect(umbImageHelper.getThumbnailFromPath(image1)).toBe("a-jpeg_thumb.jpg");
+            expect(umbImageHelper.getThumbnailFromPath(image2)).toBe("a-png_thumb.jpg");
+            expect(umbImageHelper.getThumbnailFromPath(image3)).toBe("thisisagif.blah_thumb.jpg");
+        });
+        
+    });
+});