[RFR] 8224645: Test java/nio/channels/DatagramChannel/BasicMulticastTests.java fails with NoSuchElementException

[Pavel Rappo]

I ran that changed test on Solaris many times. Those runs included some of the
machines on which the previous incarnation failed. The runs were successful.
Other platforms looked fine too.

Looks good.

> On 23 May 2019, at 18:19, Arthur Eubanks <aeubanks at google.com> wrote:
> 
> bug: https://bugs.openjdk.java.net/browse/JDK-8224645
> webrev: http://cr.openjdk.java.net/~aeubanks/8224645/webrev.00/
> 
> Test java/nio/channels/DatagramChannel/BasicMulticastTests.java fails with NoSuchElementException on Solaris.
> 
> java.util.NoSuchElementException 
> at java.base/java.util.Spliterators$1Adapter.next(Spliterators.java:688) 
> at BasicMulticastTests.main(BasicMulticastTests.java:221) 
> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
> at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
> at java.base/java.lang.reflect.Method.invoke(Method.java:567) 
> at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:298) 
> at java.base/java.lang.Thread.run(Thread.java:830)
> 
> This changes the test to check if any multicast interfaces are available for IPv4/IPv6 before testing one. This does have the effect of not failing if no multicast interfaces available, which may or may not be desirable.