Howdy All,
I'm trying to perform some simple calculations with data I've extracted using
an HTTP sampler and the Regular Expression Extractor. I have no problem
getting the values I need/want/expect from the Regex, but I can't seem to add
numbers together, and I can't seem to figure out *WHERE* the calculations
should go.
The simplest sample I've come up with looks like this:
Test Plan
+ Thread Group
- User Defined Variables
- Debug Sampler
- View Results Tree
Workbench
In User Defined Variables, I have:
Name Value
====== ================================
var1 __eval(30 + 6)
var2 ${__eval(30 + 6)}
var3 10 / 4
var4 ${__eval(10 / 4)}
var5 ${__time(YMD)}
column uname
table users
sql SELECT ${column} FROM ${table}
The output I see from the Debug Sampler is NOT what I'd expect:
var1 = __eval(30 + 6)
var2 = ${__eval(30 + 6)}
- I was hoping to get "36"
var3 = 10 / 4
var4 = ${__eval(10 / 4)}
- I was hoping to get "2"
var5 = ${__time(YMD)}
- I was hoping to get "20080410"
column = uname
table = users
sql = SELECT ${column} FROM ${table}
I was hoping to get "SELECT uname FROM users"
It may be the case that User Defined Variables is just a convenience component
which makes it easier to define variables than it would be to import them from
a text file and that my use of this component is wayward/errant. However, I
don't know where the heck to put this stuff if this is the wrong place.
Further, I don't seem to be able to get the expected values when I put these
types of expressions in other components... UNLESS I put them in the title.
The ${__time(YMD)} works great if I put it in a COMPONENT LABEL (ie.- I name
that component "Today is ${__time(YMD)}" I'll see "Today is 20080410" in the
results), but doesn't want to do what I'm expecting when I stick it anywhere
else. That makes absolutely no sense to me. How/what am I not understanding?
I'd greatly appreciate any guidance/ pointers/ references to anything that'll
help me accomplish this.
Regards,
- Dan
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