issue_comments

The change I made to that test in #354 might help with this.

If I'm going to skipIf() those tests I need a way to check if pysqlite3 is being used.

A short term fix would be to skip those tests against pysqlite3 - but longer term it would be good to address the underlying issue, particularly for the WAL ones (the FTS ones aren't too worrying since if you deliberately try and break the FTS table it's not hugely problematic if you corrupt your database).

Some interesting test failures in the version that runs with pysqlite3: =========================== short test summary info ============================ FAILED tests/test_cli.py::test_enable_wal - assert 0 == 1 FAILED tests/test_cli.py::test_disable_wal - pysqlite3.dbapi2.OperationalErro... FAILED tests/test_fts.py::test_rebuild_fts[searchable] - pysqlite3.dbapi2.Dat... FAILED tests/test_fts.py::test_rebuild_fts[searchable_fts] - pysqlite3.dbapi2... FAILED tests/test_wal.py::test_enable_disable_wal - pysqlite3.dbapi2.Operatio... ================== 5 failed, 750 passed, 3 skipped in 15.20s =================== https://github.com/simonw/sqlite-utils/runs/4360759085

The WAL errors look like this: E pysqlite3.dbapi2.OperationalError: cannot change into wal mode from within a transaction Triggered by a call to db.enable_wal()

The FTS errors are caused by tests that try to deliberately corrupt the FTS index by running fresh_db["searchable_fts_data"].delete_where() - and then rebuilding it using rebuild_fts(): ``` @pytest.mark.parametrize("table_to_fix", ["searchable", "searchable_fts"]) def test_rebuild_fts(fresh_db, table_to_fix): table = fresh_db["searchable"] table.insert(search_records[0]) table.enable_fts(["text", "country"]) # Run a search rows = list(table.search("tanuki")) assert len(rows) == 1 assert { "rowid": 1, "text": "tanuki are running tricksters", "country": "Japan", "not_searchable": "foo", }.items() <= rows[0].items() # Delete from searchable_fts_data fresh_db["searchable_fts_data"].delete_where() # This should have broken the index with pytest.raises(sqlite3.DatabaseError): list(table.search("tanuki")) # Running rebuild_fts() should fix it

  fresh_db[table_to_fix].rebuild_fts()

tests/test_fts.py:277:

sqlite_utils/db.py:1947: in rebuild_fts self.db.execute(

self = <Database \<pysqlite3.dbapi2.Connection object at 0x7fd95d299c30>> sql = "INSERT INTO searchable_fts VALUES('rebuild');" parameters = None

def execute(
    self, sql: str, parameters: Optional[Union[Iterable, dict]] = None
) -> sqlite3.Cursor:
    "Execute SQL query and return a ``sqlite3.Cursor``."
    if self._tracer:
        self._tracer(sql, parameters)
    if parameters is not None:
        return self.conn.execute(sql, parameters)
    else:

      return self.conn.execute(sql)

E pysqlite3.dbapi2.DatabaseError: database disk image is malformed ```

Took a bit of experimenting to get both mypy AND flake8 to ignore the same line. The incantation that worked was this one:

https://github.com/simonw/sqlite-utils/blob/f990e134aa8219b687ff6c261330f36824b5df36/sqlite_utils/utils.py#L8

Order here matters - this did NOT work for both tools:

python from sqlite3.dump import _iterdump as iterdump # noqa: F401 # type: ignore

https://github.com/simonw/sqlite-utils/blob/93b059dd230eae9eaae472b7fbabd4a66feeb79d/.github/workflows/test.yml#L11-L20

This configuration means that the numpy=0, Python=3.10, os=Ubuntu build will additionally use pysqlite3 with the SQLite 3.37.0.

It's failing right now: https://github.com/simonw/sqlite-utils/runs/4360593156 - because pysqlite3 doesn't provide .iterdump().

I can use the workaround from this comment: https://github.com/coleifer/pysqlite3/issues/24#issuecomment-982081267

It failed on other Python versions with mypy: sqlite_utils/utils.py:8: error: Cannot find implementation or library stub for module named "sqlite3.dump" sqlite_utils/utils.py:8: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports

Here's the test run that's installing pysqlite3 and that version of SQLite: https://github.com/simonw/sqlite-utils/runs/4360663292