If the change doesn't go through, don't log anything

lib/boost_trust_level.rb

@@ -11,12 +11,13 @@ class BoostTrustLevel
   end
 
   def save!
+    success = if @level < @user.trust_level
+                demote!
+              else
+                @user.update_attributes!(trust_level: @level)
+              end
     @logger.log_trust_level_change(@user, @level)
-    if @level < @user.trust_level
+    success
-      demote!
-    else
-      @user.update_attributes!(trust_level: @level)
-    end
   end
 
   protected

spec/components/boost_trust_level_spec.rb

@@ -48,8 +48,8 @@ describe BoostTrustLevel do
         user.update_attributes(trust_level: TrustLevel.levels[:basic])
       end
 
-      it "should not demote the user but log the action anyway" do
+      it "should not demote the user and not log the action" do
-        AdminLogger.any_instance.expects(:log_trust_level_change).with(user, TrustLevel.levels[:newuser]).once
+        AdminLogger.any_instance.expects(:log_trust_level_change).with(user, TrustLevel.levels[:newuser]).never
         boostr = BoostTrustLevel.new(user: user, level: TrustLevel.levels[:newuser], logger: logger)
         expect { boostr.save! }.to raise_error(Discourse::InvalidAccess, "You attempted to demote #{user.name} to 'newuser'. However their trust level is already 'basic'. #{user.name} will remain at 'basic'")
         user.trust_level.should == TrustLevel.levels[:basic]

spec/controllers/admin/users_controller_spec.rb

@@ -144,7 +144,7 @@ describe Admin::UsersController do
       end
 
       it "raises an error when demoting a user below their current trust level" do
-        AdminLogger.any_instance.expects(:log_trust_level_change).with(@another_user, TrustLevel.levels[:newuser]).once
+        AdminLogger.any_instance.expects(:log_trust_level_change).with(@another_user, TrustLevel.levels[:newuser]).never
         @another_user.topics_entered = SiteSetting.basic_requires_topics_entered + 1
         @another_user.posts_read_count = SiteSetting.basic_requires_read_posts + 1
         @another_user.time_read = SiteSetting.basic_requires_time_spent_mins * 60