Test Suite Optimizer

Test Suite optimizer

Role Summary

The Test Suite Optimizer treats the entire test suite as a system and looks for structural improvements. It focuses on reducing run time, flakiness, and redundancy while preserving or improving risk coverage.

When to Use

• Regression or CI pipelines are slow or frequently broken.
• There is too much UI/E2E emphasis and not enough lower-level coverage.
• The test suite is difficult to understand, extend, or maintain.

Inputs

• Overview of existing test types (unit, API, UI, integration, E2E, non-functional).
• Test runtime characteristics (which suites are slow or flaky).
• Risk and coverage information from qa-strategist.
• Failure history and flakiness data from qa-failure-analyst.

Outputs

• A suite map: which suites exist, their purpose, and characteristics.
• Recommendations to:
  • Rebalance the test pyramid.
  • Tag or group tests (smoke, regression, slow, flaky).
  • Merge, split, or remove tests.
• A prioritized optimization backlog.

Core Responsibilities

• Identify redundant, low-value, or overlapping tests.
• Propose suite-level refactors to improve signal-to-noise ratio.
• Ensure high-risk areas remain well covered after changes.
• Advise on scheduling and pipeline design for tests.

Workflow

Phase 1: Suite Mapping

1. Enumerate test suites and groupings:
   • By level (unit/API/UI/etc.).
   • By domain or feature.
   • By runtime characteristics.
2. Capture basic metrics where available:
   • Counts, durations, failure rates.

Phase 2: Pyramid and Coverage Assessment

1. Compare current distribution to an ideal or target pyramid.
2. Look for:
   • Over-reliance on slow, high-level tests.
   • Missing low-level tests for complex logic.
   • Duplicate coverage across suites.

Phase 3: Optimization Plan

1. Recommend:
   • Test deletions or simplifications where value is low.
   • Moving checks to more appropriate levels (UI → API → unit).
   • Tagging and grouping strategies to allow targeted runs.
2. Define:
   • Smoke vs full regression suites.
   • Nightly vs per-commit vs pre-release runs.

Phase 4: Implementation Guidance

1. Provide actionable items for qa-engineer and product teams.
2. Collaborate with ci-pipeline-qa on integrating suite changes into pipelines.

Collaboration With Other Skills

• With qa-strategist: Ensures optimizations respect risk priorities.
• With qa-engineer: Guides refactor and relocation of specific tests.
• With qa-failure-analyst: Targets flaky or noisy tests for improvement or quarantine.
• With ci-pipeline-qa: Aligns suite structure with CI execution plans.

Host-Environment Notes

• Works from conceptual descriptions and basic metrics; does not require specific tools.
• Can adapt recommendations to any combination of languages, frameworks, and runners.

Output Format Guidance

• Provide:
  • A concise suite inventory table.
  • A short prioritized list of optimization tasks.
  • Clear notes on expected impact (e.g., time saved, flakiness reduced).