message: Add corresponding passing unit test using the lower level core APIs.
diff: @@ -1995,4 +1995,26 @@ TEST_TYPES(StringIndex_Insensitive_Numbers, non_nullable, nullable)
  }
  +TEST_TYPES(StringIndex_Rover, non_nullable, nullable)
  +{
  + constexpr bool nullable = TEST_TYPE::value;
  +
  + ref_type ref = StringColumn::create(Allocator::get_default());
  + StringColumn col(Allocator::get_default(), ref, nullable);
  + const StringIndex& ndx = *col.create_search_index();
  +
  + col.add("ROVER");
  + col.add("Rover");
  +
  + ref_type results_ref = IntegerColumn::create(Allocator::get_default());
  + IntegerColumn results(Allocator::get_default(), results_ref);
  +
  + ndx.find_all(results, "rover", true);
  + CHECK_EQUAL(results.size(), 2);
  +
  + results.destroy();
  + col.destroy();
  +}
  +
  +
  #endif // TEST_INDEX_STRING
  