update back-end specs

spec/controllers/uploads_controller_spec.rb

@@ -41,20 +41,39 @@ describe UploadsController do
       let(:files) { [ logo_dev, logo ] }
 
       context 'with a file' do
-        it 'is succesful' do
+
+        it 'is successful' do
           xhr :post, :create, file: logo
           response.should be_success
         end
 
-        it 'supports only images' do
-          xhr :post, :create, file: text_file
-          response.status.should eq 415
+        context 'when authorized' do
+
+          before { SiteSetting.stubs(:authorized_extensions).returns(".txt") }
+
+          it 'is successful' do
+            xhr :post, :create, file: text_file
+            response.status.should eq 200
+          end
+
         end
+
+        context 'when not authorized' do
+
+          before { SiteSetting.stubs(:authorized_extensions).returns(".png") }
+
+          it 'rejects the upload' do
+            xhr :post, :create, file: text_file
+            response.status.should eq 415
+          end
+
+        end
+
       end
 
       context 'with some files' do
 
-        it 'is succesful' do
+        it 'is successful' do
           xhr :post, :create, files: files
           response.should be_success
         end