<i18n dev> 8028734: test/java/util/Locale/InternationalBAT.java changes does not restore the default TimeZone

[Alan Bateman]

We have a number of test failures in agentvm mode that appear to be 
caused by tests changing the default TimeZone and not restoring it. 
These failures become very intermittently when running with concurrency 
as it is unpredictable as to the sequence of tests that a specific agent 
VM will execute from run to run.

As part of tracking down these issues, I hacked on jtreg to error tests 
that complete with a different TimeZone that they were run with. This 
lead me to InternationalBAT.java which sets the TimeZone to GMT but 
doesn't restore it.

I'd like to fix this test to restore the time zone, the proposed patch 
is attached.

Thanks,

-Alan.


diff --git a/test/java/util/Locale/InternationalBAT.java 
b/test/java/util/Locale/InternationalBAT.java
--- a/test/java/util/Locale/InternationalBAT.java
+++ b/test/java/util/Locale/InternationalBAT.java
@@ -39,11 +39,13 @@

      public static void main(String[] args) {
          boolean pass = true;
-        if (!testRequiredLocales()) {
-            pass = false;
-        }
-        if (!testRequiredEncodings()) {
-            pass = false;
+
+        TimeZone tz = TimeZone.getDefault();
+        try {
+            pass &= testRequiredLocales();
+            pass &= testRequiredEncodings();
+        } finally {
+            TimeZone.setDefault(tz);
          }

          if (!pass) {