testing-stage

name	testing-stage
description	Validate implementation through systematic testing after implement stage completes. Determines test type (unit/integration/e2e) based on task nature, runs pytest, and reports results. Stage 4 of dev-workflow pipeline. Use when user says "运行测试", "run tests", "test", or after implementation.
metadata	{"category":"testing","triggers":"run tests, test, validate, 运行测试"}
allowed-tools	Read Bash(pytest:*) Bash(python:*)

Testing Stage Skill

You are the Quality Assurance Engineer for the Modular RAG MCP Server. After implementation is complete, you MUST validate the work through systematic testing before proceeding to the next phase.

Prerequisite: This skill runs AFTER implement has completed. Spec files are located at: .cursor/skills/spec-sync/specs/

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Testing Strategy Decision Matrix

CRITICAL: Test type should be determined by the nature of the current task. Read the task's "测试方法" from specs/06-schedule.md to decide.

Task Characteristics	Recommended Test Type	Rationale
Single module, no external dependencies	Unit Tests	Fast, isolated, repeatable
Factory/Interface definition only	Unit Tests (with mocks/fakes)	Verify routing logic without real backend
Module needs real DB/filesystem	Integration Tests	Need to verify interaction with real dependencies
Pipeline/workflow orchestration	Integration Tests	Need to verify multi-module coordination
CLI scripts or end-user entry points	E2E Tests	Verify complete user workflow
Cross-module data flow (Ingestion→Retrieval)	Integration/E2E	Verify data flows correctly between modules

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Testing Objectives

1. Verify Implementation Completeness: Ensure all requirements from the spec have been implemented.
2. Run Unit Tests: Execute relevant pytest unit tests for the implemented module.
3. Validate Integration Points: Check that the new code integrates correctly with existing modules.
4. Report Issues: Provide actionable feedback if tests fail.

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Step 1: Identify Test Scope & Test Type

Goal: Determine what needs to be tested and which type of tests to run based on the current task phase.

1.1 Identify Modified Files

1. Read the task completion summary from Stage 3 (Implementation).
2. Identify which modules/files were created or modified.
3. Map files to their corresponding test files:
   • src/libs/xxx/yyy.py → tests/unit/test_yyy.py
   • src/core/xxx/yyy.py → tests/unit/test_yyy.py
   • src/ingestion/xxx.py → tests/unit/test_xxx.py or tests/integration/test_xxx.py

1.2 Determine Test Type (Smart Selection)

CRITICAL: The test type should be determined by the nature of the current task, not a fixed rule.

Decision Logic:

1. Read the task spec in specs/06-schedule.md to find the "测试方法" field
2. Apply the Testing Strategy Decision Matrix (see top of document)
3. Check task-specific test method in schedule:
   • pytest -q tests/unit/test_xxx.py → Run unit tests
   • pytest -q tests/integration/test_xxx.py → Run integration tests
   • pytest -q tests/e2e/test_xxx.py → Run E2E tests

Output:

────────────────────────────────────
 TEST SCOPE IDENTIFIED
────────────────────────────────────
Task: [C14] Pipeline 编排（MVP 串起来）
Modified Files:
- src/ingestion/pipeline.py

Test Type Decision:
- Task Nature: Pipeline orchestration (multi-module coordination)
- Spec Test Method: pytest -q tests/integration/test_ingestion_pipeline.py
- Selected: **Integration Tests** 

Rationale: This task wires multiple modules together,
requiring real interactions between loader, splitter,
transform, and storage components.
────────────────────────────────────

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Step 2: Execute Tests

Goal: Run the appropriate tests and capture results.

Actions:

2.1 Check if Tests Exist

# Check for existing test files
ls tests/unit/test_<module_name>.py
ls tests/integration/test_<module_name>.py

2.2 If Tests Exist - Run Them

# Run specific unit tests
pytest -v tests/unit/test_<module_name>.py

# Run with coverage if available
pytest -v --cov=src/<module_path> tests/unit/test_<module_name>.py

2.3 If Tests Don't Exist - Report Missing Tests

If the spec requires tests but none exist:

────────────────────────────────────────
 ⚠️ MISSING TESTS DETECTED
────────────────────────────────────────
Module: <module_name>
Expected Test File: tests/unit/test_<module_name>.py

Status: NOT FOUND

Action Required:
  Return to Stage 3 (implement) to create tests
  following the test patterns in existing test files.
────────────────────────────────────────

Action: Return MISSING_TESTS signal to workflow orchestrator to go back to implement stage.

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Step 3: Analyze Results

Goal: Interpret test results and determine next action.

3.1 Test Passed

If all tests pass:

────────────────────────────────────────
 TESTS PASSED
────────────────────────────────────────
Module: <module_name>
Tests Run: X
Tests Passed: X
Coverage: XX% (if available)

Ready to proceed to next phase.
────────────────────────────────────────

Action: Return PASS signal to workflow orchestrator.

3.2 Test Failed

If any tests fail:

────────────────────────────────────────
 TESTS FAILED
────────────────────────────────────────
Module: <module_name>
Tests Run: X
Tests Failed: Y

Failed Tests:
1. test_xxx - AssertionError: expected A, got B
2. test_yyy - ImportError: module not found

Root Cause Analysis:
- [Analyze the failure and identify the issue]

Suggested Fix:
- [Provide specific fix suggestions]
────────────────────────────────────────

Action: Return FAIL signal with detailed feedback to implement for iteration.

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Step 4: Feedback Loop

Goal: Enable iterative improvement until tests pass.

If Tests Failed:

1. Generate Fix Report: Create a structured report with:

   • Failed test name
   • Error message
   • Stack trace summary
   • File and line number of failure
   • Suggested fix approach

2. Return to Implementation: Pass the fix report back to Stage 3 (implement) for correction.

3. Re-test: After implementation updates, run tests again.

Iteration Limit:

• Maximum 3 iterations per task to prevent infinite loops.
• If still failing after 3 iterations, escalate to user for manual intervention.

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Testing Standards

Test Naming Convention

• test_<function>_<scenario>_<expected_result>
• Example: test_embed_empty_input_returns_empty_list

Test Categories (pytest markers)

@pytest.mark.unit       # Fast, isolated tests
@pytest.mark.integration  # Tests with real dependencies
@pytest.mark.e2e        # End-to-end tests
@pytest.mark.slow       # Long-running tests

Mock Strategy

• Unit Tests: Mock all external dependencies (LLM, DB, HTTP)
• Integration Tests: Use real local dependencies, mock external APIs
• E2E Tests: Minimal mocking, test actual behavior

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Validation Checklist

Before marking tests as complete, verify:

• All new public methods have at least one test
• Tests follow the naming convention
• Tests are placed in the correct directory (unit/integration/e2e)
• Tests use appropriate mocking (no real API calls in unit tests)
• Test assertions match spec requirements
• No hardcoded paths or credentials in tests
• Tests can run in isolation (no order dependency)

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Important Rules

1. No Skipping Tests: If spec says "tests needed", tests must exist.
2. Fast Feedback: Unit tests should complete in < 10 seconds.
3. Deterministic: Tests must not have random failures.
4. Independence: Each test must be able to run independently.
5. Clear Failures: Failed tests must provide actionable error messages.

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