[TASK] Bulk insert functional database snapshots - #745
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Database snapshot restoration currently executes one INSERT statement for every saved row. Snapshot-heavy test cases therefore spend much of their setup time on database round trips. Restore each table through Connection::bulkInsert() instead. The connection preserves the existing type conversion and automatically chunks statements at the database platform's parameter limit. For the 173-test SlugLinkGeneratorTest on MariaDB, runtime decreases from 6:06.929 to 1:59.403, saving 4:07.526 or 67.5%. The same test passes on PostgreSQL in 1:03.907.
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Database snapshot restoration currently executes one INSERT statement for every saved row. Snapshot-heavy test cases therefore spend much of their setup time on database round trips.
Restore each table through Connection::bulkInsert() instead. The connection preserves the existing type conversion and automatically chunks statements at the database platform's parameter limit.
For the 173-test SlugLinkGeneratorTest on MariaDB, runtime decreases from 6:06.929 to 1:59.403, saving 4:07.526 or 67.5%. The same test passes on PostgreSQL in 1:03.907.