Those are a bit environment specific. I've had that one fail the odd time,
and I believe one of the other memory tests is ignored because it's very
difficult to make work consistently. It's not the best way to test, but
it's better than no test at all (and this one rarely fails, and I run it on
3 different OS/architecture combinations).
That said, I do like Dan's enhancement to the test. I'll have a closer look
this week.
clinton
On Wed, Dec 23, 2009 at 4:21 PM, Nathan Maves <nathan.ma...@gmail.com>wrote:
> Dan,
>
> What release did you check out? What does your env look like? OS?
> Java version?
>
> I have not seen a test failing in any of the beta builds.
>
> Nathan
>
> On Wed, Dec 23, 2009 at 11:30 AM, Dan Forward
> <dan-nab...@forwardhome.com> wrote:
> >
> > I just checked out the latest code for iBATIS 3 and discovered that a
> unit
> > test fails while building.
> >
> > ------------------------------------------------------------
> > Tests run: 4, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 5.006 sec
> > <<< FAILURE!
> >
> shouldDemonstrateObjectsBeingCollectedAsNeeded(org.apache.ibatis.cache.SoftCacheTest)
> > Time elapsed: 4.96 sec <<< FAILURE!
> > java.lang.AssertionError:
> > at org.junit.Assert.fail(Assert.java:71)
> > at org.junit.Assert.assertTrue(Assert.java:34)
> > at org.junit.Assert.assertTrue(Assert.java:43)
> > at
> >
> org.apache.ibatis.cache.SoftCacheTest.shouldDemonstrateObjectsBeingCollectedAsNeeded(SoftCacheTest.java:21)
> > ------------------------------------------------------------
> >
> > It seems that this test attempts to fill the cache beyond the limits of
> > available memory, then checks whether the size of the cache is smaller
> than
> > the number of items added. The cache is filled with 300,000 byte arrays
> that
> > are 5001 bytes in size.
> >
> > I set the limit to 3,000,000 and told the loop to break as soon as the
> size
> > of the cache was less than the number entered, and discovered that it
> > happened after 326,315 entries and approximately 6 seconds on my machine.
> > The test I used is below.
> >
> > @Test
> > public void shouldDemonstrateObjectsBeingCollectedAsNeeded() throws
> > Exception {
> > final int N = 3000000;
> > SoftCache cache = new SoftCache(new PerpetualCache("default"));
> > for (int i = 0; i < N; i++) {
> > byte[] array = new byte[5001]; //waste a bunch of memory
> > array[5000] = 1;
> > cache.putObject(i, array);
> > Object value = cache.getObject(i);
> > if (cache.getSize() < i + 1) {
> > System.out.println("Cache exceeded with " + (i + 1) + "
> entries.");
> > break;
> > }
> > }
> > assertTrue(cache.getSize() < N);
> > }
> >
> > --
> > View this message in context:
> http://old.nabble.com/SoftCacheTest-is-Failing-tp26905687p26905687.html
> > Sent from the iBATIS - Dev mailing list archive at Nabble.com.
> >
> >
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> >
> >
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