RFR: JShell fail over test failure not given fail over support and message confusing

[Jan Lahoda]

Looks good to me.

Jan

On 13. 06. 20 1:59, Robert Field wrote:
> All runs of JShell including all tests have fail over protection against 
> launch failure -- except fail over tests, which only get one chance.
> 
> The exception thrown is only for the first failure, so for a fail over 
> test with an intended first failure that is particularly confusing.
> 
> Harden the tests and provide comprehensive diagnostics.
> 
> Bugs:
> 
>    8247438: JShell: When FailOverExecutionControlProvider fails the 
> proximal cause is not shown
> https://bugs.openjdk.java.net/browse/JDK-8247438
> 
>    8237743: test/langtools/jdk/jshell/FailOverExecutionControlTest.java 
> fails No ExecutionControlProvider with name 'nonExistent' and parameter 
> keys: []
> https://bugs.openjdk.java.net/browse/JDK-8237743
> 
>    8199646: JShell tests: 
> jdk/jshell/FailOverDirectExecutionControlTest.java failed with 
> java.lang.UnsupportedOperationException
> https://bugs.openjdk.java.net/browse/JDK-8199646
> 
> Webrev:
> 
> http://cr.openjdk.java.net/~rfield/8247438v0/
> 
> 
> Thanks,
> Robert
> 
>