Tests using Version.LUCENE_CURRENT will produce problems in backwards branch, 
wen development for 3.2 starts
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                 Key: LUCENE-2248
                 URL: https://issues.apache.org/jira/browse/LUCENE-2248
             Project: Lucene - Java
          Issue Type: Test
          Components: Analysis, contrib/*, contrib/analyzers, 
contrib/benchmark, contrib/highlighter, contrib/spatial, contrib/spellchecker, 
contrib/wikipedia, Index, Javadocs, Other, Query/Scoring, QueryParser, Search, 
Store, Term Vectors
            Reporter: Uwe Schindler
            Priority: Minor
             Fix For: 3.1


A lot of tests for the most-recent functionality in Lucene use 
Version.LUCENE_CURRENT, which is fine in trunk, as we use the most recent 
version without hassle and changing this in later versions.

The problem is, if we copy these tests to backwards branch after 3.1 is out and 
then start to improve analyzers, we then will have the maintenance hell for 
backwards tests. And we loose backward compatibility testing for older 
versions. If we would specify a specific version like LUCENE_31 in our tests, 
after moving to backwards they must work without any changes!

To not always modify all tests after a new version comes out (e.g. after 
switching to 3.2 dev), I propse to do the following:
- declare a static final Version TEST_VERSION = Version.LUCENE_CURRENT (or 
better) Version.LUCENE_31 in LuceneTestCase(4J).
- change all tests that use Version.LUCENE_CURRENT using eclipse refactor to 
use this constant and remove unneeded import statements.

When we then move the tests to backward we must only change one line, depending 
on how we define this constant:
- If in trunk LuceneTestCase it's Version.LUCENE_CURRENT, we just change the 
backwards branch to use the version numer of the released thing.
- If trunk already uses the LUCENE_31 constant (I prefer this), we do not need 
to change backwards, but instead when switching version numbers we just move 
trunk forward to the next major version (after added to Version enum).

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