First bug, the module 'Products/PluginIndexes/tests/testFieldIndex.py' contains the methods 'checkEmpty', 'checkPopulated', 'checkZero', 'checkNone' and 'checkRange'; they should be named 'testEmpty', 'testPopulated', etc.. otherwise the tests doesn't run. Last bug, The file 'Products/PluginIndexes/README.txt' from Zope 2.4.3 says that there're two ways to pass parameters: old: <dtml-in myCatalog(myindex='xx yy',myindex_usage':'blabla') new: <dtml-in myCatalog(myindex={'query':'xx yy','usage':'....'}) And the class 'CatalogTool' in 'Products/CMFCore/CatalogTool.py' (CMF from the CVS) uses the new way, but it doesn't works. Add the following test case to'PluginIndexes/tests/testFieldIndex.py': def testNewRange(self): """Test a range search""" index = FieldIndex( 'foo' ) for i in range(100): index.index_object(i, Dummy(i%10)) r=index._apply_index({'foo': {'query': [-99, 3], 'usage': 'range:min:max'}}) assert tuple(r[1])==('foo',), r[1] r=list(r[0].keys()) expect=[ 0, 1, 2, 3, 10, 11, 12, 13, 20, 21, 22, 23, 30, 31, 32, 33, 40, 41, 42, 43, 50, 51, 52, 53, 60, 61, 62, 63, 70, 71, 72, 73, 80, 81, 82, 83, 90, 91, 92, 93 ] assert r==expect, r This test is similar to 'testRange' but uses the new way to pass parameters. It fails: AssertionError: [3, 13, 23, 33, 43, 53, 63, 73, 83, 93] -- J. David Ibáñez, Nuxeo.com