Adds flash messages to files_controller#create (#19793).

git-svn-id: http://svn.redmine.org/redmine/trunk@14243 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/functional/files_controller_test.rb

@@ -106,4 +106,15 @@ class FilesControllerTest < ActionController::TestCase
     assert_equal Version.find(2), a.container
   end
 
+  def test_create_without_file
+    set_tmp_attachments_directory
+    @request.session[:user_id] = 2
+
+    assert_no_difference 'Attachment.count' do
+      post :create, :project_id => 1, :version_id => ''
+      assert_response 200
+      assert_template 'new'
+    end
+    assert_select 'div.error', 'File is invalid'
+  end
 end