What does this do - TestThis(hello)

Question

I was recently asked a ColdFusion question during a job
interview. I was asked as to what this line of code does.
<CFSET SomeVariable = TestThis(hello)>
My first thought was that this creates a structure with
"hello" as a key. But then I started to think that this is sending
"Hello" into a custom tag. Can anyone shed some light on this. I
just want to know if my initial response was correct since I was
just guessing. Thanks!

Answer 1

My take - a variable named "hello" is being passed into a
function named "TestThis". The "TestThis" function returns a value
which is stored in a variable named "SomeVariable".