dev-testing

name	dev-testing
description	Gate 3 of development cycle - ensures unit test coverage meets threshold (85%+) for all acceptance criteria using TDD methodology.
trigger	- After implementation and SRE complete (Gate 0/1/2) - Task has acceptance criteria requiring test coverage - Need to verify implementation meets requirements
NOT_skip_when	- "Manual testing validates all criteria" → Manual tests are not executable. Gate 3 requires unit tests. - "Integration tests are better" → Gate 3 scope is unit tests only. - "Coverage is close to 85%" → Close enough is not passing. Meet exact threshold.
sequence	{"after":["dev-implementation","dev-devops","dev-sre"],"before":["requesting-code-review"]}
related	{"complementary":["test-driven-development","qa-analyst"]}
input_schema	{"required":[{"name":"unit_id","type":"string","description":"Task or subtask identifier"},{"name":"acceptance_criteria","type":"array","items":"string","description":"List of acceptance criteria to test"},{"name":"implementation_files","type":"array","items":"string","description":"Files from Gate 0 implementation"},{"name":"language","type":"string","enum":["go","typescript","python"],"description":"Programming language"}],"optional":[{"name":"coverage_threshold","type":"float","default":85,"description":"Minimum coverage percentage (cannot be below 85)"},{"name":"gate0_handoff","type":"object","description":"Full handoff from Gate 0"},{"name":"existing_tests","type":"array","items":"string","description":"Existing test files"}]}
output_schema	{"format":"markdown","required_sections":[{"name":"Testing Summary","pattern":"^## Testing Summary","required":true},{"name":"Coverage Report","pattern":"^## Coverage Report","required":true},{"name":"Traceability Matrix","pattern":"^## Traceability Matrix","required":true},{"name":"Handoff to Next Gate","pattern":"^## Handoff to Next Gate","required":true}],"metrics":[{"name":"result","type":"enum","values":["PASS","FAIL"]},{"name":"coverage_actual","type":"float"},{"name":"coverage_threshold","type":"float"},{"name":"tests_written","type":"integer"},{"name":"criteria_covered","type":"string","description":"X/Y format"},{"name":"iterations","type":"integer"}]}
verification	{"automated":[{"command":"go test ./... -covermode=atomic -coverprofile=coverage.out && go tool cover -func=coverage.out | grep total","description":"Go tests pass with coverage","success_pattern":"total:.*[8-9][0-9]|100"},{"command":"npm test -- --coverage | grep -E 'All files|Statements'","description":"TypeScript tests pass with coverage","success_pattern":"[8-9][0-9]|100"}],"manual":["Every acceptance criterion has at least one test","No skipped or pending tests"]}
examples	[{"name":"TDD for auth service","input":{"unit_id":"task-001","acceptance_criteria":["User can login with valid credentials","Invalid password returns error"],"implementation_files":["internal/service/auth.go"],"language":"go"},"expected_output":"## Testing Summary\n**Status:** PASS\n**Coverage:** 89.5%\n\n## Coverage Report\n| Package | Coverage |\n|---------|----------|\n| internal/service | 89.5% |\n\n## Traceability Matrix\n| AC | Test | Status |\n|----|------|--------|\n| AC-1 | TestAuthService_Login_ValidCredentials | ✅ |\n| AC-2 | TestAuthService_Login_InvalidPassword | ✅ |\n\n## Handoff to Next Gate\n- Ready for Gate 4: YES\n"}]

Dev Testing (Gate 3)

Overview

Ensure every acceptance criterion has at least one unit test proving it works. Follow TDD methodology: RED (failing test) -> GREEN (implementation) -> REFACTOR.

Core principle: Untested acceptance criteria are unverified claims. Each criterion MUST map to at least one executable unit test.

Coverage threshold: 85% minimum (Ring standard). PROJECT_RULES.md can raise, not lower.

CRITICAL: Role Clarification

This skill ORCHESTRATES. QA Analyst Agent EXECUTES.

Who	Responsibility
This Skill	Gather requirements, dispatch agent, track iterations
QA Analyst Agent	Write tests, run coverage, report results

---

Step 1: Validate Input

REQUIRED INPUT (from dev-cycle orchestrator):
- unit_id: [task/subtask being tested]
- acceptance_criteria: [list of ACs to test]
- implementation_files: [files from Gate 0]
- language: [go|typescript|python]

OPTIONAL INPUT:
- coverage_threshold: [default 85.0, cannot be lower]
- gate0_handoff: [full Gate 0 output]
- existing_tests: [existing test files]

IF any REQUIRED input is missing:
  → STOP and report: "Missing required input: [field]"
  → Return to orchestrator with error

IF coverage_threshold < 85:
  → STOP and report: "Coverage threshold cannot be below Ring minimum (85%)"
  → Use 85% as threshold

Step 2: Initialize Testing State

testing_state = {
  unit_id: [from input],
  coverage_threshold: max(85, [from input]),
  coverage_actual: null,
  verdict: null,
  iterations: 0,
  max_iterations: 3,
  traceability_matrix: [],
  tests_written: 0
}

Step 3: Dispatch QA Analyst Agent

Task:
  subagent_type: "qa-analyst"
  model: "opus"
  description: "Write unit tests for [unit_id]"
  prompt: |
    ⛔ WRITE UNIT TESTS for All Acceptance Criteria

    ## Input Context
    - **Unit ID:** []
      []
       []

    
    [   , , ]

    
    [ ]

    
     
     

       

    

    
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