Update test to reflect changes in #123 and #109

Sine we "treat exceptions thrown by arguments to check as test
failures", and test failures contain "params" clause, it makes sense
for the reported message to contain the clause as well.
The clause is also useful in itself.

Use procedure-rename to avoid names
like #<procedure:.../path/to/file.rkt:x:y> which is brittle and
especially too sensitive to changes.

Author: sorawee

rackunit-test/tests/rackunit/standalone-check-test.rkt

@@ -41,7 +41,7 @@
 (check = 1 1 0.0)
 
 ;; This check should display an error including the message "Outta here!"
-(check-pred (lambda (x) (error "Outta here!")) 'foo)
+(check-pred (procedure-rename (lambda (x) (error "Outta here!")) 'proc) 'foo)
 
 
 ;; This check should display a failure

rackunit-test/tests/rackunit/standalone.rkt

@@ -43,6 +43,7 @@
 ERROR
 name:       check-pred
 location:   standalone-check-test.rkt:44:0
+params:     '(#<procedure:proc> foo)
 
 Outta here!
 --------------------