In AbstractImportXmlTest, a bug in getUnusedUri() causes URI length to grow too quickly, causing test to fail when using ORM-PM

Test fails when using ORM-PM because the URI exceeds the column size in the database.

Here is the current implementation:

protected String getUnusedURI() throws RepositoryException {
Set uris = new HashSet(Arrays.asList(nsp.getURIs()));
String uri = TEST_URI;
int i = 0;
while (uris.contains(uri))

{ uri += i++; }

return uri;
}

When running the test, the URI grows to become something like this:

When i=50,
"www.apache.org/jackrabbit/test/namespaceImportTest01234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950"

Here is the proposed fix:

protected String getUnusedURI() throws RepositoryException {
Set uris = new HashSet(Arrays.asList(nsp.getURIs()));
String uri = TEST_URI;
int i = 0;
while (uris.contains(uri))

{ uri = TEST_URI + i++; }

return uri;
}

When i=50,
"www.apache.org/jackrabbit/test/namespaceImportTest50"