RFR 8200118: [test] String concat tests should test toString() application order

[Aleksey Shipilev]

Paul S. had reviewed, any other reviewers need/want to review?

Thanks,
-Aleksey

On 03/22/2018 06:56 PM, Aleksey Shipilev wrote:
> Bug:
>   https://bugs.openjdk.java.net/browse/JDK-8200118
> 
> Webrev:
>   http://cr.openjdk.java.net/~shade/8200118/webrev.01/
> 
> This adds the relevant test to StringConcat family of tests, which asserts all strategies do the
> right thing. There was a bug in MH_* strategies caused by the already fixed bug in filterArguments
> [1], which this test was supposed to find, if existed before.
> 
> Testing: run-test with jdk/jdk, run-test before/after filterArguments fix in jdk-updates/jdk10u
> 
> Thanks,
> -Aleksey
> 
> [1] https://bugs.openjdk.java.net/browse/JDK-8194554
>