Attempting to get breaking test correctly failing on CI

[allouis]

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[coderabbitai]

Walkthrough

The pull request modifies how records are set in the KnexKvStore class and updates the test database configuration. In the KnexKvStore class, the set method now uses a transaction that first checks for the existence of a record with the given key. It then performs an insert if the key is not found, or an update if the key exists, replacing the previous use of an insert with an onConflict clause. Additionally, the test setup in src/test/db.ts is updated to include a connection pool configuration with both min and max properties set to 1, ensuring a fixed pool size for the duration of database testing.

Possibly related PRs

• Fix KV store handling concurrent writes to the same key #409: This PR is related at the code level as it enhances concurrent write handling by introducing tests for concurrent operations on the same key, aligning with the transaction-based approach in the set method.

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[coderabbitai]

Actionable comments posted: 0

🧹 Nitpick comments (1)

src/test/db.ts (1)

49-52: Consider the implications of a single connection pool for parallel testing.
While using a single connection simplifies the test environment, you may encounter slower performance or queued transactions if multiple test suites attempt to connect concurrently. If these tests do not require parallel execution, this is perfectly acceptable. Otherwise, you might consider slightly increasing the pool size to accommodate concurrent usage without resource contention.

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Configuration used: CodeRabbit UI
Review profile: CHILL
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📥 Commits

Reviewing files that changed from the base of the PR and between 875bd0f and 0694fbc.

📒 Files selected for processing (2)

• src/knex.kvstore.ts (1 hunks)
• src/test/db.ts (1 hunks)

⏰ Context from checks skipped due to timeout of 90000ms (1)

• GitHub Check: Build, Test and Push

🔇 Additional comments (1)

src/knex.kvstore.ts (1)

44-58: Double-check concurrency handling in transactions for the set method.
Your transaction-based approach is a good start to ensure consistency when updating or inserting records. However, if multiple transactions target the same key concurrently, you might still observe race conditions. Consider using database-specific upsert capabilities (e.g. INSERT ... ON DUPLICATE KEY UPDATE in MySQL) or a “FOR UPDATE” lock on the row to ensure no conflicting transactions can read an outdated record before it’s updated.