# JUnit Reporter Improvements — Implementation Plan

> **Status: ✅ COMPLETED** (2026-05-12) — All 6 tasks implemented, 38/38 tests passing, TypeScript clean.

> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [x]`) syntax for tracking.

**Goal:** Upgrade `JUnitReporter` in `src/server/reporters/junit.ts` to be fully compatible with modern CI/CD tools (Jenkins, TeamCity, GitHub Actions, Allure, TestMo, etc.) by fixing suite keying, failure/error bodies, screenshot attachments, and spec-required attributes.

**Architecture:** All changes are confined to a single file (`src/server/reporters/junit.ts`). Tests live in `tests/reporters/junit.test.ts` and exercise the reporter end-to-end by emitting `EventEmitter` events and asserting the resulting XML file content.

**Tech Stack:** TypeScript, Node.js `os`/`path`/`fs` (built-ins), Vitest

---

## File Structure

| File                            | Action | Purpose                                   |
| ------------------------------- | ------ | ----------------------------------------- |
| `src/server/reporters/junit.ts` | Modify | All implementation changes                |
| `tests/reporters/junit.test.ts` | Create | New test file — end-to-end XML assertions |

---

## Task 1: Test Infrastructure + `writeElement` Text Content

**Files:**

- Create: `tests/reporters/junit.test.ts`
- Modify: `src/server/reporters/junit.ts`

### Context

`writeElement` currently only accepts `children?: () => void`. Failure and error elements need to write text between their tags. We extend it with an optional 4th param `textContent?: string`.

- [x] **Step 1: Create the test file with helpers and a smoke test**

```typescript
// tests/reporters/junit.test.ts
import { describe, test, expect, afterEach } from 'vitest';
import EventEmitter from 'events';
import { join, dirname } from 'path';
import { tmpdir } from 'os';
import { readFileSync, unlinkSync, existsSync } from 'fs';
import { randomUUID } from 'crypto';
import { TEST_EVENTS } from '../../src/types.js';
import { JUnitReporter } from '../../src/server/reporters/junit.js';
import type { FakeTest, FakeSuite, Images } from '../../src/types.js';

// ── helpers ──────────────────────────────────────────────────────────────────

function tempXmlPath(): string {
  return join(tmpdir(), `junit-test-${randomUUID()}.xml`);
}

interface FakeTestOptions {
  storyTitle?: string;
  testTitle?: string;
  browserName?: string;
  state?: 'passed' | 'failed';
  err?: string;
  duration?: number;
  attachments?: string[];
  images?: Partial<Record<string, Partial<Images>>>;
}

function makeFakeTest(opts: FakeTestOptions = {}): FakeTest {
  const storyTitle = opts.storyTitle ?? 'My Story';
  const testTitle = opts.testTitle ?? 'my test';
  const browserName = opts.browserName ?? 'chrome';

  const suite: FakeSuite = {
    title: storyTitle,
    fullTitle: () => storyTitle,
    titlePath: () => [storyTitle],
    tests: [],
  };

  return {
    parent: suite,
    title: testTitle,
    fullTitle: () => `${storyTitle} ${testTitle}`,
    titlePath: () => [storyTitle, testTitle],
    currentRetry: () => 0,
    retires: () => 0,
    slow: () => 0,
    duration: opts.duration ?? 100,
    state: opts.state ?? 'passed',
    err: opts.err,
    attachments: opts.attachments,
    creevey: {
      testId: `${storyTitle}/${testTitle}`,
      sessionId: 'session-1',
      browserName,
      workerId: 1,
      willRetry: false,
      images: opts.images ?? {},
    },
  };
}

function runReporter(tests: FakeTest[], outputFile: string): string {
  const runner = new EventEmitter();
  new JUnitReporter(runner, {
    reportDir: dirname(outputFile),
    reporterOptions: { outputFile },
  });

  runner.emit(TEST_EVENTS.RUN_BEGIN);
  for (const test of tests) {
    runner.emit(TEST_EVENTS.TEST_BEGIN, test);
    if (test.state === 'passed') {
      runner.emit(TEST_EVENTS.TEST_PASS, test);
    } else {
      runner.emit(TEST_EVENTS.TEST_FAIL, test);
    }
  }
  runner.emit(TEST_EVENTS.RUN_END);

  return readFileSync(outputFile, 'utf-8');
}

const createdFiles: string[] = [];
function track(p: string): string {
  createdFiles.push(p);
  return p;
}
afterEach(() => {
  for (const p of createdFiles.splice(0)) {
    if (existsSync(p)) unlinkSync(p);
  }
});

// ── smoke test ────────────────────────────────────────────────────────────────

describe('JUnitReporter', () => {
  test('produces valid XML for a single passing test', () => {
    const out = track(tempXmlPath());
    const xml = runReporter([makeFakeTest()], out);
    expect(xml).toContain('<?xml version="1.0" encoding="UTF-8" ?>');
    expect(xml).toContain('<testsuites');
    expect(xml).toContain('<testsuite');
    expect(xml).toContain('<testcase');
    expect(xml).toContain('name="my test"');
  });
});
```

- [x] **Step 2: Run the smoke test to confirm it passes** (it tests existing behavior)

```bash
yarn test tests/reporters/junit.test.ts
```

Expected: 1 test passes.

- [x] **Step 3: Write a failing test for `writeElement` text content — failure element with body**

Add this `describe` block inside the outer `describe('JUnitReporter', ...)`:

```typescript
describe('failure body', () => {
  test('writes failure element with text body when images are present', () => {
    const out = track(tempXmlPath());
    const test = makeFakeTest({
      state: 'failed',
      images: { header: { error: 'images differ by 5%' } },
    });
    const xml = runReporter([test], out);
    expect(xml).toContain('<failure');
    expect(xml).toContain('header: images differ by 5%');
    expect(xml).toContain('</failure>');
  });
});
```

- [x] **Step 4: Run to confirm it fails**

```bash
yarn test tests/reporters/junit.test.ts
```

Expected: FAIL — the failure element currently has no text body.

- [x] **Step 5: Extend `writeElement` with `textContent` parameter**

In `src/server/reporters/junit.ts`, change the `writeElement` signature and body:

```typescript
private writeElement(
  name: string,
  attrs: Record<string, string | number | undefined>,
  children?: () => void,
  textContent?: string,
): void {
  const pairs: string[] = [];
  for (const key in attrs) {
    const attr = attrs[key];
    if (attr === undefined) {
      continue;
    }
    pairs.push(`${key}="${escapeXML(attr)}"`);
  }

  this.logger.log(`<${name}${pairs.length ? ` ${pairs.join(' ')}` : ''}>`);
  this.logger.indent();
  if (textContent !== undefined) {
    this.logger.log(escapeXML(textContent));
  } else {
    children?.call(this);
  }
  this.logger.unindent();
  this.logger.log(`</${name}>`);
}
```

- [x] **Step 6: Run tests — still fails** (the reporter's `writeTasks` still doesn't use `textContent`)

```bash
yarn test tests/reporters/junit.test.ts
```

Expected: still FAIL — we haven't updated `writeTasks` yet. That's OK — we'll do it in Task 3.

- [x] **Step 7: Commit the writeElement extension**

```bash
git add src/server/reporters/junit.ts tests/reporters/junit.test.ts
git commit -m "feat(junit): extend writeElement with textContent parameter

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>"
```

---

## Task 2: Suite Keying Fix (multi-browser)

**Files:**

- Modify: `src/server/reporters/junit.ts`
- Modify: `tests/reporters/junit.test.ts`

### Context

Currently `suites` and `suiteStartTimes` are keyed by story name only (`test.parent.title`). When the same story runs in multiple browsers, all browsers merge into one `<testsuite>` entry — the later write for browser B overwrites the entry from browser A. The fix: key internally by `"${suiteName}/${browserName}"` and store `suiteName` + `browserName` in the entry. Each browser produces its own `<testsuite>` block.

- [x] **Step 1: Write failing test for multi-browser suite keying**

Add inside `describe('JUnitReporter', ...)`:

```typescript
describe('multi-browser suites', () => {
  test('creates separate testsuite elements for each browser', () => {
    const out = track(tempXmlPath());
    const chromeTest = makeFakeTest({ storyTitle: 'Button', browserName: 'chrome' });
    const firefoxTest = makeFakeTest({ storyTitle: 'Button', browserName: 'firefox' });
    const xml = runReporter([chromeTest, firefoxTest], out);

    // Should have TWO <testsuite> elements, one per browser
    const suiteMatches = xml.match(/<testsuite /g) ?? [];
    expect(suiteMatches.length).toBe(2);
  });

  test('adds browser property to each testsuite', () => {
    const out = track(tempXmlPath());
    const test = makeFakeTest({ storyTitle: 'Button', browserName: 'chrome' });
    const xml = runReporter([test], out);

    expect(xml).toContain('<property name="browser" value="chrome"');
  });
});
```

- [x] **Step 2: Run to confirm multi-browser test fails**

```bash
yarn test tests/reporters/junit.test.ts
```

Expected: FAIL on `suiteMatches.length` (currently 1, expected 2) and missing browser property.

- [x] **Step 3: Add `SuiteEntry` interface and update `suites` field type**

In `src/server/reporters/junit.ts`, add the `SuiteEntry` interface after imports (before the `IndentedLogger` class):

```typescript
interface SuiteEntry {
  suiteName: string;
  browserName: string;
  tests: Map<string, FakeTest>;
}
```

Change the `suites` field declaration:

```typescript
// OLD:
private suites: Record<string, Map<string, FakeTest>> = {};

// NEW:
private suites: Record<string, SuiteEntry> = {};
```

- [x] **Step 4: Update the three event handlers in the constructor**

Replace all three event handlers (`TEST_BEGIN`, `TEST_PASS`, `TEST_FAIL`) with the keyed versions:

```typescript
runner.on(TEST_EVENTS.TEST_BEGIN, (test: FakeTest) => {
  const key = `${test.parent.title}/${test.creevey.browserName}`;
  this.suiteStartTimes[key] ??= new Date();
});
runner.on(TEST_EVENTS.TEST_PASS, (test: FakeTest) => {
  const key = `${test.parent.title}/${test.creevey.browserName}`;
  if (!this.suites[key]) {
    this.suites[key] = { suiteName: test.parent.title, browserName: test.creevey.browserName, tests: new Map() };
  }
  this.suites[key].tests.set(test.creevey.testId, test);
});
runner.on(TEST_EVENTS.TEST_FAIL, (test: FakeTest) => {
  const key = `${test.parent.title}/${test.creevey.browserName}`;
  if (!this.suites[key]) {
    this.suites[key] = { suiteName: test.parent.title, browserName: test.creevey.browserName, tests: new Map() };
  }
  this.suites[key].tests.set(test.creevey.testId, test);
});
```

- [x] **Step 5: Update `onFinished` to use the new `SuiteEntry` structure**

Replace the `suites` local variable computation and the `testsuite` write block in `onFinished`:

```typescript
const suites = Object.entries(this.suites).map(([key, { suiteName, browserName, tests }]) => {
  let failures = 0;
  let time = 0;
  for (const [, test] of tests) {
    if (test.state === 'failed') {
      failures++;
    }
    time += test.duration ?? 0;
  }
  return {
    key,
    suiteName,
    browserName,
    tests,
    failures,
    time,
    timestamp: toISO8601(this.suiteStartTimes[key] ?? this.runStartTime),
  };
});
```

And the `testsuites` element's inner `suites.forEach`:

```typescript
suites.forEach(({ suiteName, browserName, tests, failures, time, timestamp }) => {
  this.writeElement(
    'testsuite',
    {
      name: suiteName,
      tests: tests.size,
      failures,
      time: executionTime(time),
      timestamp,
    },
    () => {
      this.writeElement('properties', {}, () => {
        this.writeElement('property', { name: 'browser', value: browserName });
      });
      this.writeTasks(tests);
    },
  );
});
```

- [x] **Step 6: Run tests**

```bash
yarn test tests/reporters/junit.test.ts
```

Expected: all previously passing tests still pass; the new multi-browser tests pass too. The failure-body test from Task 1 still fails (expected — we'll fix that in Task 3).

- [x] **Step 7: Commit**

```bash
git add src/server/reporters/junit.ts tests/reporters/junit.test.ts
git commit -m "feat(junit): fix suite keying for multi-browser runs

Key suites by 'storyName/browserName' so each browser produces its
own <testsuite> block. Add <property name=\"browser\"> to each suite.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>"
```

---

## Task 3: Failure Body & Errors vs Failures Distinction

**Files:**

- Modify: `src/server/reporters/junit.ts`
- Modify: `tests/reporters/junit.test.ts`

### Context

The spec distinguishes:

- **`<failure>`**: image diff mismatch — `test.creevey.images` has entries
- **`<error>`**: unexpected crash — `test.err` set, no images

`<testsuite>` and `<testsuites>` should report both `failures` and `errors` attributes separately.

- [x] **Step 1: Write failing tests for failure body and error distinction**

Add inside `describe('JUnitReporter', ...)`:

```typescript
describe('failure and error elements', () => {
  test('writes failure with per-step body for image mismatches', () => {
    const out = track(tempXmlPath());
    const t = makeFakeTest({
      state: 'failed',
      images: {
        header: { error: 'header differs by 3%' },
        body: { actual: '/tmp/body.png' }, // no error string
      },
    });
    const xml = runReporter([t], out);
    expect(xml).toContain('<failure');
    expect(xml).toContain('message="Images do not match"');
    expect(xml).toContain('header: header differs by 3%');
    expect(xml).toContain('body: expected and actual images differ');
    expect(xml).toContain('</failure>');
  });

  test('writes error element for crash with no images', () => {
    const out = track(tempXmlPath());
    const t = makeFakeTest({
      state: 'failed',
      err: 'TypeError: Cannot read properties of null',
    });
    const xml = runReporter([t], out);
    expect(xml).toContain('<error');
    expect(xml).toContain('message="TypeError: Cannot read properties of null"');
    expect(xml).toContain('TypeError: Cannot read properties of null');
    expect(xml).toContain('</error>');
    expect(xml).not.toContain('<failure');
  });

  test('counts errors and failures separately on testsuite', () => {
    const out = track(tempXmlPath());
    const imageFail = makeFakeTest({
      storyTitle: 'Story',
      testTitle: 'img fail',
      state: 'failed',
      images: { header: {} },
    });
    const crash = makeFakeTest({
      storyTitle: 'Story',
      testTitle: 'crash',
      state: 'failed',
      err: 'boom',
    });
    const xml = runReporter([imageFail, crash], out);
    // 1 failure (image) + 1 error (crash)
    expect(xml).toMatch(/failures="1"/);
    expect(xml).toMatch(/errors="1"/);
  });

  test('writes fallback failure when state is failed but no images and no err', () => {
    const out = track(tempXmlPath());
    const t = makeFakeTest({ state: 'failed' });
    const xml = runReporter([t], out);
    expect(xml).toContain('<failure');
    expect(xml).toContain('message="Test failed"');
  });
});
```

- [x] **Step 2: Run to confirm all four tests fail**

```bash
yarn test tests/reporters/junit.test.ts
```

Expected: 4 new FAIL results.

- [x] **Step 3: Rewrite `writeTasks` and update `onFinished` stats**

Replace `writeTasks` in `src/server/reporters/junit.ts`:

```typescript
private writeTasks(tests: Map<string, FakeTest>): void {
  for (const [, test] of tests) {
    const classname = test.parent.title;
    this.writeElement(
      'testcase',
      {
        classname,
        name: test.title,
        time: getDuration(test),
      },
      () => {
        if (test.state === 'failed') {
          this.writeFailureOrError(test);
        }
      },
    );
  }
}

private writeFailureOrError(test: FakeTest): void {
  const images = test.creevey.images ?? {};
  const imageEntries = Object.entries(images);

  if (imageEntries.length > 0) {
    const bodyLines = imageEntries.map(([step, img]) => `${step}: ${img?.error ?? 'expected and actual images differ'}`);
    this.writeElement('failure', { message: 'Images do not match' }, undefined, bodyLines.join('\n'));
  } else if (test.err) {
    this.writeElement('error', { message: test.err, type: 'Error' }, undefined, test.err);
  } else {
    this.writeElement('failure', { message: 'Test failed' });
  }
}
```

- [x] **Step 4: Update `onFinished` to compute `errors` count separately**

Replace the `suites` computation's `failures` counting:

```typescript
const suites = Object.entries(this.suites).map(([key, { suiteName, browserName, tests }]) => {
  let failures = 0;
  let errors = 0;
  let time = 0;
  for (const [, test] of tests) {
    if (test.state === 'failed') {
      const hasImages = Object.keys(test.creevey.images ?? {}).length > 0;
      if (hasImages) failures++;
      else errors++;
    }
    time += test.duration ?? 0;
  }
  return {
    key,
    suiteName,
    browserName,
    tests,
    failures,
    errors,
    time,
    timestamp: toISO8601(this.suiteStartTimes[key] ?? this.runStartTime),
  };
});
const stats = suites.reduce(
  (s, { tests, failures, errors, time }) => {
    s.tests += tests.size;
    s.failures += failures;
    s.errors += errors;
    s.time += time;
    return s;
  },
  { name: 'creevey tests', tests: 0, failures: 0, errors: 0, time: 0 },
);
```

Also update the `testsuite` element attributes in the `suites.forEach` to include `errors`:

```typescript
suites.forEach(({ suiteName, browserName, tests, failures, errors, time, timestamp }) => {
  this.writeElement(
    'testsuite',
    {
      name: suiteName,
      tests: tests.size,
      failures,
      errors,
      time: executionTime(time),
      timestamp,
    },
    () => {
      this.writeElement('properties', {}, () => {
        this.writeElement('property', { name: 'browser', value: browserName });
      });
      this.writeTasks(tests);
    },
  );
});
```

- [x] **Step 5: Run all tests**

```bash
yarn test tests/reporters/junit.test.ts
```

Expected: all tests pass (including the smoke test and multi-browser tests from earlier tasks).

- [x] **Step 6: Commit**

```bash
git add src/server/reporters/junit.ts tests/reporters/junit.test.ts
git commit -m "feat(junit): add failure/error body text and separate errors count

- <failure> includes per-step image error lines for diff mismatches
- <error> element for crashes (test.err set, no images)
- testsuite and testsuites report failures and errors separately
- fallback <failure message=\"Test failed\"> for edge cases

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>"
```

---

## Task 4: Screenshot Attachments

**Files:**

- Modify: `src/server/reporters/junit.ts`
- Modify: `tests/reporters/junit.test.ts`

### Context

`test.attachments` holds absolute paths to screenshot files. We write a `<properties>` block inside each `<testcase>` with one `<property name="attachment" value="relative/path.png"/>` per file. Paths are relative to the XML file's directory so CI artifact bundles are portable.

- [x] **Step 1: Write failing tests for screenshot attachments**

Add inside `describe('JUnitReporter', ...)`:

```typescript
describe('screenshot attachments', () => {
  test('writes attachment properties relative to the report file', () => {
    const out = track(tempXmlPath());
    const absPath = join(dirname(out), 'Button', 'primary', 'chrome', 'button-actual-1.png');
    const t = makeFakeTest({
      state: 'failed',
      images: { header: {} },
      attachments: [absPath],
    });
    const xml = runReporter([t], out);

    expect(xml).toContain('<properties>');
    expect(xml).toContain('name="attachment"');
    expect(xml).toContain('Button/primary/chrome/button-actual-1.png');
    expect(xml).toContain('</properties>');
  });

  test('no attachment properties block when attachments is empty', () => {
    const out = track(tempXmlPath());
    const t = makeFakeTest({ state: 'passed', attachments: [] });
    const xml = runReporter([t], out);
    // The only <properties> block that may appear is in <testsuite> (browser prop) — not in testcase
    // We verify there's no attachment property
    expect(xml).not.toContain('name="attachment"');
  });

  test('no attachment properties block when attachments is undefined', () => {
    const out = track(tempXmlPath());
    const t = makeFakeTest({ state: 'passed' }); // attachments not set
    const xml = runReporter([t], out);
    expect(xml).not.toContain('name="attachment"');
  });
});
```

- [x] **Step 2: Run to confirm all three tests fail**

```bash
yarn test tests/reporters/junit.test.ts
```

Expected: FAIL on all 3 attachment tests.

- [x] **Step 3: Add `relative` import and update `writeTasks`**

At the top of `src/server/reporters/junit.ts`, the import of `path` functions already includes `resolve` and `dirname`. Add `relative`:

```typescript
// OLD:
import { dirname, resolve } from 'path';

// NEW:
import { dirname, relative, resolve } from 'path';
```

Update `writeTasks` to write the attachment `<properties>` block inside each `<testcase>` callback. Change the `writeTasks` method so that the `<testcase>` children callback also emits the attachment block before the failure/error:

```typescript
private writeTasks(tests: Map<string, FakeTest>): void {
  for (const [, test] of tests) {
    const classname = test.parent.title;
    const attachments = test.attachments ?? [];
    this.writeElement(
      'testcase',
      {
        classname,
        name: test.title,
        time: getDuration(test),
      },
      () => {
        if (test.state === 'failed') {
          this.writeFailureOrError(test);
        }
        if (attachments.length > 0) {
          this.writeElement('properties', {}, () => {
            for (const absPath of attachments) {
              this.writeElement('property', {
                name: 'attachment',
                value: relative(dirname(this.reportFile), absPath),
              });
            }
          });
        }
      },
    );
  }
}
```

- [x] **Step 4: Run all tests**

```bash
yarn test tests/reporters/junit.test.ts
```

Expected: all tests pass.

- [x] **Step 5: Commit**

```bash
git add src/server/reporters/junit.ts tests/reporters/junit.test.ts
git commit -m "feat(junit): add screenshot attachment properties to testcase elements

Write <properties name=\"attachment\"> with paths relative to the
XML file for each entry in test.attachments.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>"
```

---

## Task 5: Spec Attributes — `hostname` and Sequential `id`

**Files:**

- Modify: `src/server/reporters/junit.ts`
- Modify: `tests/reporters/junit.test.ts`

### Context

Jenkins JUnit plugin schema requires `hostname` on each `<testsuite>`. Sequential `id` (zero-indexed) is a standard attribute that lets CI tools process suites in order. We also remove the unused `// TODO Output attachments` comment.

- [x] **Step 1: Write failing tests for hostname and id attributes**

Add inside `describe('JUnitReporter', ...)`:

```typescript
describe('testsuite spec attributes', () => {
  test('includes hostname attribute on testsuite', () => {
    const out = track(tempXmlPath());
    const xml = runReporter([makeFakeTest()], out);
    expect(xml).toMatch(/hostname="[^"]+"/);
  });

  test('includes sequential id starting at 0 on each testsuite', () => {
    const out = track(tempXmlPath());
    const a = makeFakeTest({ storyTitle: 'Alpha', browserName: 'chrome' });
    const b = makeFakeTest({ storyTitle: 'Beta', browserName: 'chrome' });
    const xml = runReporter([a, b], out);
    expect(xml).toContain('id="0"');
    expect(xml).toContain('id="1"');
  });
});
```

- [x] **Step 2: Run to confirm tests fail**

```bash
yarn test tests/reporters/junit.test.ts
```

Expected: FAIL — no `hostname` or `id` attributes currently.

- [x] **Step 3: Add `os` import**

At the top of `src/server/reporters/junit.ts`, add:

```typescript
import os from 'os';
```

- [x] **Step 4: Add `hostname` and `id` to the `testsuite` element in `onFinished`**

In `onFinished`, update the `suites.forEach` to include the index-based `id` and `os.hostname()`:

```typescript
suites.forEach(({ suiteName, browserName, tests, failures, errors, time, timestamp }, index) => {
  this.writeElement(
    'testsuite',
    {
      name: suiteName,
      tests: tests.size,
      failures,
      errors,
      time: executionTime(time),
      hostname: os.hostname(),
      id: index,
      timestamp,
    },
    () => {
      this.writeElement('properties', {}, () => {
        this.writeElement('property', { name: 'browser', value: browserName });
      });
      this.writeTasks(tests);
    },
  );
});
```

- [x] **Step 5: Remove stale TODO comment**

In `src/server/reporters/junit.ts`, remove the line:

```typescript
// TODO Output attachments
```

- [x] **Step 6: Run all tests**

```bash
yarn test tests/reporters/junit.test.ts
```

Expected: all tests pass.

- [x] **Step 7: Type-check**

```bash
/Users/ki/Projects/creevey/creevey/node_modules/typescript/bin/tsc --noEmit
```

Expected: no new errors (pre-existing errors in `.creevey/`, `.storybook/`, and `docs/examples/` are unrelated — ignore them).

- [x] **Step 8: Commit**

```bash
git add src/server/reporters/junit.ts tests/reporters/junit.test.ts
git commit -m "feat(junit): add hostname and sequential id attributes to testsuite

Required by Jenkins JUnit plugin schema; useful for distributed CI runs.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>"
```

---

## Task 6: Final Verification & Cleanup

**Files:**

- Possibly modify: `src/server/reporters/junit.ts` (cleanup only)

- [x] **Step 1: Run the full test suite**

```bash
yarn test
```

Expected: all existing tests pass; new reporter tests pass.

- [x] **Step 2: Verify the final state of `junit.ts` has no leftover TODOs from the plan**

Open `src/server/reporters/junit.ts` and confirm:

- No `// TODO Output attachments` comment
- `os` is imported
- `relative` is in the path imports
- `SuiteEntry` interface is defined above `JUnitReporter`
- `writeElement` has the 4-param signature
- `writeTasks` emits failure/error + attachment properties
- `writeFailureOrError` exists as a private method
- `onFinished` uses `index` in `forEach` for `id`

- [x] **Step 3: Final commit if any cleanup was needed**

```bash
git add src/server/reporters/junit.ts
git commit -m "chore(junit): final cleanup

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>"
```

---

## Self-Review

### Spec Coverage

| Spec requirement                              | Task   |
| --------------------------------------------- | ------ |
| Suite keying by `suiteName/browserName`       | Task 2 |
| `<property name="browser">` on each testsuite | Task 2 |
| `<failure>` with image error body             | Task 3 |
| `<error>` for crashes (test.err, no images)   | Task 3 |
| Separate `failures` and `errors` counts       | Task 3 |
| Fallback `<failure message="Test failed">`    | Task 3 |
| Screenshot `<properties name="attachment">`   | Task 4 |
| Relative attachment paths                     | Task 4 |
| `hostname` on `<testsuite>`                   | Task 5 |
| Sequential `id` on `<testsuite>`              | Task 5 |
| `writeElement` text content extension         | Task 1 |

All spec requirements are covered. ✓

### Type Consistency

- `SuiteEntry` defined in Task 2, used consistently through Tasks 2–5.
- `writeElement` 4-param signature defined in Task 1, used in Task 3 (`writeFailureOrError`).
- `relative` import added in Task 4, used in `writeTasks`.
- `os` import added in Task 5, used in `onFinished`.
- `errors` field added to suite entry in Task 3, carried through `onFinished` stats.

### Placeholder Scan

No TBD, TODO, or placeholder content. All code blocks are complete. ✓