public void testAlphanumericFileFailOnClose() throws Exception {
AlphanumericDataSource ds = (AlphanumericDataSource)
dsf.getDataSource("alphaCloseFile");
ds.beginTrans();
ds.deleteRow(2);
ds.setFieldValue(0, 1, ValueFactory.createValue("nuevo"));
String table = ds.getAsString();
try {
ds.commitTrans();
} catch (FreeingResourcesException e) {