[issue43853] [sqlite3] Improve sqlite3_value_text() error handling

[Erlend E. Aasland]

Erlend E. Aasland <erlend.aasland at innova.no> added the comment:

The affected branch is exercised by the following tests:
- test_aggr_check_param_blob
- test_aggr_check_param_float
- test_aggr_check_param_int
- test_aggr_check_param_none
- test_aggr_check_param_str
- test_aggr_check_params_int
- test_aggr_exception_in_finalize
- test_aggr_exception_in_step
- test_aggr_no_finalize
- test_param_string

I've expanded test_aggr_check_param_str and test_param_string to also check empty strings.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43853>
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