RFR 8075618: Create tests to check jarsigner work with multi-version jar

[Wang Weijun]

Hi Amanda

Everything is fine. I have no other comment.

Thanks
Max

> On Dec 19, 2016, at 2:43 PM, Amanda Jiang <amanda.jiang at oracle.com> wrote:
> 
> 
> 
> On 12/18/16 10:23 PM, Wang Weijun wrote:
>>> Please see updated webrev : http://cr.openjdk.java.net/~amjiang/8075618/webrev.04/ (also attached)
>>> 
>>> I moved the checkPermission() calls into v9/bersion/Version.java, but I did not check if the output contains "I'm running on version 9", I think it does not make sense to make test fail with later or earlier version of Java (10 or 8).
>> This test will run in JDK 10 and your checkPermission(perm,bool) method will not get called. Suppose a regression is introduced one day that breaks the access control checking, this test will not be able to catch it.
>> 
>> If you check for the "version 9" string, the test will fail which reminds you to move the checkPermission call to Version.java of JDK 10 and it will catch that regression.
>> 
>> Thanks
>> Max
> Version check added to the test :http://cr.openjdk.java.net/~amjiang/8075618/webrev.05
> Thanks,
> Amanda
> <webrev.zip>