[LUCENE-6760] TestUtil#randomWhitespace() broken for Java 9 (Unicode 7)

• Type: Test
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 5.3.1, 5.4, 6.0
• Labels: Java9

Environment

Java 9 build 76+

• Lucene Fields: New
• Assignee: Uwe Schindler
• Reporter: Uwe Schindler
• Created: 22/Aug/15 18:49
• Updated: 28/Aug/22 14:41
• Resolved: 08/Sep/15 15:02

Description

Java 9 changed its character tables to unicode version 7.0. The table updates are listed here: http://hg.openjdk.java.net/jdk9/jdk9/jdk/rev/86206517258d

Because of this, character \u180E is no longer treated as whitespace, so TestUtil#randomWhitespace() fails.

I will remove this character from the list and update the documentation JRE_VERSION_MIGRATION.txt.

We should maybe make this character list dynamic (e.g. TestUtil initializes it on static class init one time by iterating over all 16 bit characters). Maybe somebody else has an idea (there is already a TODO in the code about that).

Issue Links

• is superceded by: SOLR-7958 Move TestUtil#randomWhitespace to the test that is sole user