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From "Ivanov, Alexey A" <alexey.a.iva...@intel.com>
Subject [classlib][swing][testing] Tests that depend on Garbage Collector
Date Wed, 06 Dec 2006 15:16:47 GMT
Hi all,

There are three tests in Swing which depend on Garbage Collector. That is GC is _really_ run
as the result of System.gc() call.

These tests are:
    * javax.swing.text.GapContent_InternalTest.testPositionGC(),
    * javax.swing.text.StyleContextTest.testCollectGarbageInCache(), and
    * javax.swing.text.StyleContextTest.testCollectGarbageInCacheFont().

What they check is:
* j.s.t.Position instances are removed from the internal list of GapContent when an instance
is not used any more. (PhantomReference and WeakReference are involved.)
* cached AttributeSets are removed from it (WeakHashMap).
* cached Fonts are removed from the corresponding cache (WeakReference).


These tests always pass when run on the RI. They were used to ensure caching works fine. None
of VMs in Harmony seem to perform garbage collection when System.gc() is called, and mostly
these tests fail. However, sometimes they pass.


How can we handle these tests? Just remove them?

Thank you in advance,
--
Alexey A. Ivanov
Intel Enterprise Solutions Software Division

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