Fix tests for FIND *

tests/test_boolean.py

tests/test_datatype.py

tests/test_datatype_inheritance.py

tests/test_datetime.py

tests/test_double.py

tests/test_empty_text_value.py

tests/test_error_stuff.py

tests/test_importance.py

tests/test_permissions.py

tests/test_query.py

tests/test_query_template.py

tests/test_tickets.py

tests/test_tickets_200.py

tests/test_unit.py