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From Apache Wiki <>
Subject [Lucene-java Wiki] Update of "TestIdeas" by MikeMcCandless
Date Sun, 24 Apr 2011 20:13:25 GMT
Dear Wiki user,

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The "TestIdeas" page has been changed by MikeMcCandless.


   1. Add getNumThreads() to LuceneTestCase that takes Runtime.getRuntime().availableProcessors()
into account. Multi-threaded tests should use more threads than available processors to increase
the chance to detect timing -sensitive data races so that at any given time some threads are
running and some are switched out, thus reducing the predictability of interactions between
   1. REALTIME_BRANCH - Add Random DWPTThreadPool that randomly assigns ThreadStates to increase
test coverage in DW if tests are single threaded.
   1. MockTokenizer should not extend CharTokenizer (this should move to analyzers module).
Instead, it should extend Tokenizer directly. This way, we can add some extra asserts checks,
for example the ctor and reset(Reader) could set resetCalled = false, but reset() would set
this to true, and we assert it in incrementToken(). Because most tests use MockAnalyzer, checks
like this can enforce that they are consuming tokenstreams correctly.
+  1. MockDirectoryWrapper.close should also fail if there are still open files for writing
(now it only fails if there are open files for reading)

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