[LUCENE-1529] back-compat tests ("ant test-tag") should test JAR drop-in-ability

• Type: New Feature
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.9
• Fix Version/s: 2.9
• Component/s: general/build
• Lucene Fields: New
• Assignee: Michael Busch
• Reporter: Michael McCandless
• Created: 26/Jan/09 13:40
• Updated: 28/Aug/22 11:57
• Resolved: 14/Apr/09 21:19

Description

We now test back-compat with "ant test-tag", which is very useful for
catching breaks in back compat before committing.

However, that currently checks out "src/test" sources and then
compiles them against the trunk JAR, and runs the tests. Whereas our
back compat policy:

http://wiki.apache.org/lucene-java/BackwardsCompatibility

states that no recompilation is required on upgrading to a new JAR.
Ie you should be able to drop in the new JAR in place of your old one
and things should work fine.

So... we should fix "ant test-tag" to:

• Do full checkout of core sources & tests from the back-compat-tag

• Compile the JAR from the back-compat sources

• Compile the tests against that back-compat JAR

• Swap in the trunk JAR

• Run the tests