...

src/calibre/db/sqlite_extension.cpp

@@ -421,6 +421,7 @@ tokenize(PyObject *self, PyObject *args) {
     if (!remove_diacritics) targs[1] = "0";
     Tokenizer t(targs, sizeof(targs)/sizeof(targs[0]));
     pyobject_raii ans(PyList_New(0));
+    if (!ans) return NULL;
     t.tokenize(ans.ptr(), flags, text, text_length, py_callback);
     return ans.detach();
 }

src/calibre/db/tests/fts.py

@@ -150,3 +150,13 @@ class FTSTest(BaseTest):
         self.ae(conn.search('moose AND one'), [])
 
     # }}}
+
+
+def find_tests():
+    import unittest
+    return unittest.defaultTestLoader.loadTestsFromTestCase(FTSTest)
+
+
+def run_tests():
+    from calibre.utils.run_tests import run_tests
+    run_tests(find_tests)