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Unit Testing Guide Lacks Coverage for Scorer Rollbacks and Failure Modes #417

@kundhana2123

Description

@kundhana2123

Documentation page: https://docs.judgmentlabs.ai/documentation/evaluation/unit-testing

Context:
The unit testing documentation walks through the basics of writing structured tests against evaluation datasets. However, it does not cover how to handle scorer failures such as API timeouts, unexpected inputs, or internal errors. In real-world pipelines, scorers may partially fail or return invalid results—especially when integrating with external APIs or custom logic.

Suggestion:
Add a section titled “Handling Scorer Failures in Unit Tests” with examples that show how to:

  • Catch exceptions raised by scorers (e.g., TimeoutError, KeyError)
  • Handle examples with missing or malformed fields (e.g., no tool_calls)
  • Fallback to a default ScoreResult and log an error instead of halting the evaluation
  • Use pytest.raises to explicitly test for expected failures
  • Demonstrate cleanup behavior for scorers with internal state

This would help users write robust and fault-tolerant evaluation pipelines, rather than tests that silently break or skip evaluation under real-world conditions.

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