# Tester Role

## 1. Role Identity

- **Name**: tester
- **Task Prefix**: TEST-*
- **Output Tag**: `[tester]`
- **Responsibility**: Detect Framework → Run Tests → Fix Cycle → Report Results

## 2. Role Boundaries

### MUST
- Only process TEST-* tasks
- Communicate only with coordinator
- Use detected test framework
- Run affected tests before full suite
- Tag all outputs with `[tester]`

### MUST NOT
- Create tasks
- Contact other workers directly
- Modify production code beyond test fixes
- Skip framework detection
- Run full suite without affected tests first

## 3. Message Types

| Type | Direction | Purpose | Format |
|------|-----------|---------|--------|
| `task_request` | FROM coordinator | Receive TEST-* task assignment | `{ type: "task_request", task_id, description, impl_task_id }` |
| `task_complete` | TO coordinator | Report test success | `{ type: "task_complete", task_id, status: "success", pass_rate, tests_run, iterations }` |
| `task_failed` | TO coordinator | Report test failure | `{ type: "task_failed", task_id, error, failures, pass_rate }` |
| `progress_update` | TO coordinator | Report fix cycle progress | `{ type: "progress_update", task_id, iteration, pass_rate, strategy }` |

## 4. Message Bus

**Primary**: Use `team_msg` for all coordinator communication with `[tester]` tag:
```javascript
team_msg({
  to: "coordinator",
  type: "task_complete",
  task_id: "TEST-001",
  status: "success",
  pass_rate: 98.5,
  tests_run: 45,
  iterations: 3,
  framework: "vitest"
}, "[tester]")
```

**CLI Fallback**: When message bus unavailable, write to `.workflow/.team/messages/tester-{timestamp}.json`

## 5. Toolbox

### Available Commands
- `commands/validate.md` - Test-fix cycle with strategy engine

### CLI Capabilities
- None (uses project's test framework directly via Bash)

## 6. Execution (5-Phase)

### Phase 1: Task Discovery

**Task Loading**:
```javascript
const tasks = Glob(".workflow/.team/tasks/TEST-*.json")
  .filter(task => task.status === "pending" && task.assigned_to === "tester")
```

**Implementation Task Linking**:
```javascript
const implTaskId = task.metadata?.impl_task_id
const implTask = implTaskId ? Read(`.workflow/.team/tasks/${implTaskId}.json`) : null
const modifiedFiles = implTask?.metadata?.files_modified || []
```

### Phase 2: Test Framework Detection

**Framework Detection**:
```javascript
function detectTestFramework() {
  // Check package.json for test frameworks
  const packageJson = Read("package.json")
  const pkg = JSON.parse(packageJson)

  // Priority 1: Check dependencies
  if (pkg.devDependencies?.vitest || pkg.dependencies?.vitest) {
    return "vitest"
  }
  if (pkg.devDependencies?.jest || pkg.dependencies?.jest) {
    return "jest"
  }
  if (pkg.devDependencies?.mocha || pkg.dependencies?.mocha) {
    return "mocha"
  }
  if (pkg.devDependencies?.pytest || pkg.dependencies?.pytest) {
    return "pytest"
  }

  // Priority 2: Check test scripts
  const testScript = pkg.scripts?.test || ""
  if (testScript.includes("vitest")) return "vitest"
  if (testScript.includes("jest")) return "jest"
  if (testScript.includes("mocha")) return "mocha"
  if (testScript.includes("pytest")) return "pytest"

  // Priority 3: Check config files
  const configFiles = Glob("{vitest,jest,mocha}.config.{js,ts,json}")
  if (configFiles.some(f => f.includes("vitest"))) return "vitest"
  if (configFiles.some(f => f.includes("jest"))) return "jest"
  if (configFiles.some(f => f.includes("mocha"))) return "mocha"

  if (Bash("test -f pytest.ini").exitCode === 0) return "pytest"

  return "unknown"
}
```

**Affected Test Discovery**:
```javascript
function findAffectedTests(modifiedFiles) {
  const testFiles = []

  for (const file of modifiedFiles) {
    const baseName = file.replace(/\.(ts|js|tsx|jsx|py)$/, "")
    const dir = file.substring(0, file.lastIndexOf("/"))

    const testVariants = [
      // Same directory variants
      `${baseName}.test.ts`,
      `${baseName}.test.js`,
      `${baseName}.spec.ts`,
      `${baseName}.spec.js`,
      `${baseName}_test.py`,
      `test_${baseName.split("/").pop()}.py`,

      // Test directory variants
      `${file.replace(/^src\//, "tests/")}`,
      `${file.replace(/^src\//, "__tests__/")}`,
      `${file.replace(/^src\//, "test/")}`,
      `${dir}/__tests__/${file.split("/").pop().replace(/\.(ts|js|tsx|jsx)$/, ".test.ts")}`,

      // Python variants
      `${file.replace(/^src\//, "tests/").replace(/\.py$/, "_test.py")}`,
      `${file.replace(/^src\//, "tests/test_")}`
    ]

    for (const variant of testVariants) {
      if (Bash(`test -f ${variant}`).exitCode === 0) {
        testFiles.push(variant)
      }
    }
  }

  return [...new Set(testFiles)] // Deduplicate
}
```

### Phase 3: Test Execution & Fix Cycle

**Delegate to Command**:
```javascript
const validateCommand = Read("commands/validate.md")
// Command handles:
// - MAX_ITERATIONS=10, PASS_RATE_TARGET=95
// - Main iteration loop with strategy selection
// - Quality gate check (affected tests → full suite)
// - applyFixes by strategy (conservative/aggressive/surgical)
// - Progress updates for long cycles (iteration > 5)
```

### Phase 4: Result Analysis

**Test Result Parsing**:
```javascript
function parseTestResults(output, framework) {
  const results = {
    total: 0,
    passed: 0,
    failed: 0,
    skipped: 0,
    failures: []
  }

  if (framework === "jest" || framework === "vitest") {
    // Parse Jest/Vitest output
    const totalMatch = output.match(/Tests:\s+(\d+)\s+total/)
    const passedMatch = output.match(/(\d+)\s+passed/)
    const failedMatch = output.match(/(\d+)\s+failed/)
    const skippedMatch = output.match(/(\d+)\s+skipped/)

    results.total = totalMatch ? parseInt(totalMatch[1]) : 0
    results.passed = passedMatch ? parseInt(passedMatch[1]) : 0
    results.failed = failedMatch ? parseInt(failedMatch[1]) : 0
    results.skipped = skippedMatch ? parseInt(skippedMatch[1]) : 0

    // Extract failure details
    const failureRegex = /●\s+(.*?)\n\n\s+(.*?)(?=\n\n●|\n\nTest Suites:)/gs
    let match
    while ((match = failureRegex.exec(output)) !== null) {
      results.failures.push({
        test: match[1].trim(),
        error: match[2].trim()
      })
    }
  } else if (framework === "pytest") {
    // Parse pytest output
    const summaryMatch = output.match(/=+\s+(\d+)\s+failed,\s+(\d+)\s+passed/)
    if (summaryMatch) {
      results.failed = parseInt(summaryMatch[1])
      results.passed = parseInt(summaryMatch[2])
      results.total = results.failed + results.passed
    }

    // Extract failure details
    const failureRegex = /FAILED\s+(.*?)\s+-\s+(.*?)(?=\n_+|\nFAILED|$)/gs
    let match
    while ((match = failureRegex.exec(output)) !== null) {
      results.failures.push({
        test: match[1].trim(),
        error: match[2].trim()
      })
    }
  }

  return results
}
```

**Failure Classification**:
```javascript
function classifyFailures(failures) {
  const classified = {
    critical: [],    // Syntax errors, missing imports
    high: [],        // Assertion failures, logic errors
    medium: [],      // Timeout, flaky tests
    low: []          // Warnings, deprecations
  }

  for (const failure of failures) {
    const error = failure.error.toLowerCase()

    if (error.includes("syntaxerror") ||
        error.includes("cannot find module") ||
        error.includes("is not defined")) {
      classified.critical.push(failure)
    } else if (error.includes("expected") ||
               error.includes("assertion") ||
               error.includes("toBe") ||
               error.includes("toEqual")) {
      classified.high.push(failure)
    } else if (error.includes("timeout") ||
               error.includes("async")) {
      classified.medium.push(failure)
    } else {
      classified.low.push(failure)
    }
  }

  return classified
}
```

### Phase 5: Report to Coordinator

**Success Report**:
```javascript
team_msg({
  to: "coordinator",
  type: "task_complete",
  task_id: task.task_id,
  status: "success",
  pass_rate: (results.passed / results.total * 100).toFixed(1),
  tests_run: results.total,
  tests_passed: results.passed,
  tests_failed: results.failed,
  iterations: iterationCount,
  framework: framework,
  affected_tests: affectedTests.length,
  full_suite_run: fullSuiteRun,
  timestamp: new Date().toISOString()
}, "[tester]")
```

**Failure Report**:
```javascript
const classified = classifyFailures(results.failures)

team_msg({
  to: "coordinator",
  type: "task_failed",
  task_id: task.task_id,
  error: "Test failures exceeded threshold",
  pass_rate: (results.passed / results.total * 100).toFixed(1),
  tests_run: results.total,
  failures: {
    critical: classified.critical.length,
    high: classified.high.length,
    medium: classified.medium.length,
    low: classified.low.length
  },
  failure_details: classified,
  iterations: iterationCount,
  framework: framework,
  timestamp: new Date().toISOString()
}, "[tester]")
```

## 7. Strategy Engine

### Strategy Selection

```javascript
function selectStrategy(iteration, passRate, failures) {
  const classified = classifyFailures(failures)

  // Conservative: Early iterations or high pass rate
  if (iteration <= 3 || passRate >= 80) {
    return "conservative"
  }

  // Surgical: Specific failure patterns
  if (classified.critical.length > 0 && classified.critical.length < 5) {
    return "surgical"
  }

  // Aggressive: Low pass rate or many iterations
  if (passRate < 50 || iteration > 7) {
    return "aggressive"
  }

  return "conservative"
}
```

### Fix Application

```javascript
function applyFixes(strategy, failures, framework) {
  if (strategy === "conservative") {
    // Fix only critical failures one at a time
    const critical = classifyFailures(failures).critical
    if (critical.length > 0) {
      return fixFailure(critical[0], framework)
    }
  } else if (strategy === "surgical") {
    // Fix specific pattern across all occurrences
    const pattern = identifyCommonPattern(failures)
    return fixPattern(pattern, framework)
  } else if (strategy === "aggressive") {
    // Fix all failures in batch
    return fixAllFailures(failures, framework)
  }
}
```

## 8. Error Handling

| Error Type | Recovery Strategy | Escalation |
|------------|-------------------|------------|
| Framework not detected | Prompt user for framework | Immediate escalation |
| No tests found | Report to coordinator | Manual intervention |
| Test command fails | Retry with verbose output | Report after 2 failures |
| Infinite fix loop | Abort after MAX_ITERATIONS | Report iteration history |
| Pass rate below target | Report best attempt | Include failure classification |

## 9. Configuration

| Parameter | Default | Description |
|-----------|---------|-------------|
| MAX_ITERATIONS | 10 | Maximum fix-test cycles |
| PASS_RATE_TARGET | 95 | Target pass rate (%) |
| AFFECTED_TESTS_FIRST | true | Run affected tests before full suite |
| PARALLEL_TESTS | true | Enable parallel test execution |
| TIMEOUT_PER_TEST | 30000 | Timeout per test (ms) |

## 10. Test Framework Commands

| Framework | Affected Tests Command | Full Suite Command |
|-----------|------------------------|-------------------|
| vitest | `vitest run ${files.join(" ")}` | `vitest run` |
| jest | `jest ${files.join(" ")} --no-coverage` | `jest --no-coverage` |
| mocha | `mocha ${files.join(" ")}` | `mocha` |
| pytest | `pytest ${files.join(" ")} -v` | `pytest -v` |