RFR: 8219585: [TESTBUG] sun/management/jmxremote/bootstrap/JMXInterfaceBindingTest.java passes trivially when it shouldn't

[Severin Gehwolf]

On Sun, 2019-02-24 at 22:39 -0800, Sharath Ballal wrote:
> Nit: 
> you may want to change this message 
>            "Ignoring manual test since no more than one IPs are configured for 'localhost'" 
> to       "Ignoring manual test since no non loopback IPs are configured for 'localhost'"
> 

Thanks for the review, Sharath!

Updated:
http://cr.openjdk.java.net/~sgehwolf/webrevs/JDK-8219585/02/webrev/

Thanks,
Severin

> -----Original Message-----
> From: Severin Gehwolf [mailto:sgehwolf at redhat.com] 
> Sent: Friday, February 22, 2019 8:34 PM
> To: serviceability-dev
> Subject: RFR: 8219585: [TESTBUG] sun/management/jmxremote/bootstrap/JMXInterfaceBindingTest.java passes trivially when it shouldn't
> 
> Hi!
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8219585
> 
> Could somebody please review this trivial testbug. For a config like [1] the logic prior JDK-8145982 returned this list for
> getAddressesForLocalHost():
> 
> [localhost/127.0.0.1, localhost/192.168.1.18, localhost/0:0:0:0:0:0:0:1]
> 
> Post JDK-8145982, getAddressesForLocalHost() returns:
> 
> [localhost/192.168.1.18]
> 
> The fix is trivial. Just adjust the condition for as to when the test should actually trivially pass:
> 
> diff --git a/test/jdk/sun/management/jmxremote/bootstrap/JMXInterfaceBindingTest.java b/test/jdk/sun/management/jmxremote/bootstrap/JMXInterfaceBindingTest.java
> --- a/test/jdk/sun/management/jmxremote/bootstrap/JMXInterfaceBindingTest.java
> +++ b/test/jdk/sun/management/jmxremote/bootstrap/JMXInterfaceBindingTes
> +++ t.java
> @@ -176,8 +176,8 @@
>      }
>  
>      public static void main(String[] args) {
> -        List<InetAddress> addrs = getAddressesForLocalHost();
> -        if (addrs.size() < 2) {
> +        List<InetAddress> addrs = getNonLoopbackAddressesForLocalHost();
> +        if (addrs.size() < 1) {
>              System.out.println("Ignoring manual test since no more than one IPs are configured for 'localhost'");
>              return;
>          }
> @@ -186,7 +186,7 @@
>          System.out.println("All tests PASSED.");
>      }
>  
> -    private static List<InetAddress> getAddressesForLocalHost() {
> +    private static List<InetAddress> 
> + getNonLoopbackAddressesForLocalHost() {
>  
>          try {
>              return NetworkInterface.networkInterfaces()
> 
> 
> Testing: Manual testing on local setup. jdk/submit (currently running)
> 
> Thanks,
> Severin
> 
> 
> [1] $ grep localhost /etc/hosts | grep -v '::'
> 127.0.0.1    localhost localhost.localdomain localhost4 localhost4.localdomain4
> 192.168.1.18 localhost
>