The TestFilter does not indicate an error (in FME 2018.1; build 18502, win64).Normally an error is indicated by a red icon on the transformer
However, when I use the testfilter and something is wrong I do not see this red icon. When I look at the "TestFilter parameters window" I still don't see that something is wrong.
I need the look at the "Test Conditions window" to see what is wrong. This is indicated by the red row (see image below).
It would be helpful if the icon would turn red and if you could see what is wrong in the "TestFilter parameter window".
Would it be possible to implement this?