test: verify Phase 2 — routing + coord tests (P2-007) (#79)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

packages/coord/src/__tests__/tasks-file.test.ts

@@ -0,0 +1,102 @@
+import { describe, it, expect } from 'vitest';
+import { parseTasksFile, writeTasksFile } from '../tasks-file.js';
+import type { MissionTask } from '../types.js';
+
+const SAMPLE_TASKS_MD = `# Tasks — MVP
+
+> Single-writer: orchestrator only. Workers read but never modify.
+
+| id     | status      | milestone | description                                | pr  | notes |
+| ------ | ----------- | --------- | ------------------------------------------ | --- | ----- |
+| P0-001 | done        | Phase 0   | Scaffold monorepo                          | #60 | #1    |
+| P0-002 | done        | Phase 0   | @mosaic/types — migrate and extend         | #65 | #2    |
+| P1-001 | in-progress | Phase 1   | apps/gateway scaffold                      | #61 | #10   |
+| P2-001 | not-started | Phase 2   | @mosaic/agent — Pi SDK integration         | —   | #19   |
+| P2-002 | blocked     | Phase 2   | Multi-provider support                     | —   | #20   |
+`;
+
+describe('parseTasksFile', () => {
+  it('parses a valid TASKS.md into MissionTask[]', () => {
+    const tasks = parseTasksFile(SAMPLE_TASKS_MD);
+    expect(tasks).toHaveLength(5);
+  });
+
+  it('extracts task IDs correctly', () => {
+    const tasks = parseTasksFile(SAMPLE_TASKS_MD);
+    expect(tasks.map((t) => t.id)).toEqual(['P0-001', 'P0-002', 'P1-001', 'P2-001', 'P2-002']);
+  });
+
+  it('extracts statuses correctly', () => {
+    const tasks = parseTasksFile(SAMPLE_TASKS_MD);
+    expect(tasks.map((t) => t.status)).toEqual([
+      'done',
+      'done',
+      'in-progress',
+      'not-started',
+      'blocked',
+    ]);
+  });
+
+  it('extracts milestones correctly', () => {
+    const tasks = parseTasksFile(SAMPLE_TASKS_MD);
+    expect(tasks[0]!.milestone).toBe('Phase 0');
+    expect(tasks[2]!.milestone).toBe('Phase 1');
+    expect(tasks[3]!.milestone).toBe('Phase 2');
+  });
+
+  it('extracts PR references', () => {
+    const tasks = parseTasksFile(SAMPLE_TASKS_MD);
+    expect(tasks[0]!.pr).toBe('#60');
+    expect(tasks[3]!.pr).toBe('—');
+  });
+
+  it('returns empty array for empty content', () => {
+    expect(parseTasksFile('')).toEqual([]);
+    expect(parseTasksFile('# No table here')).toEqual([]);
+  });
+
+  it('handles legacy status values', () => {
+    const content = `| id | status | description |
+|----|--------|-------------|
+| T1 | completed | Task one |
+| T2 | pending | Task two |
+| T3 | failed | Task three |
+`;
+    const tasks = parseTasksFile(content);
+    expect(tasks[0]!.status).toBe('done');
+    expect(tasks[1]!.status).toBe('not-started');
+    expect(tasks[2]!.status).toBe('blocked');
+  });
+});
+
+describe('writeTasksFile', () => {
+  it('generates valid markdown table', () => {
+    const tasks: MissionTask[] = [
+      {
+        id: 'T-001',
+        title: 'Test task',
+        status: 'done',
+        dependencies: [],
+        milestone: 'Phase 1',
+        pr: '#42',
+        notes: '#1',
+      },
+    ];
+
+    const output = writeTasksFile(tasks);
+    expect(output).toContain('| T-001 | done | Phase 1 | Test task | #42 | #1 |');
+    expect(output).toContain('# Tasks');
+  });
+
+  it('roundtrips parse/write', () => {
+    const tasks = parseTasksFile(SAMPLE_TASKS_MD);
+    const output = writeTasksFile(tasks);
+    const reparsed = parseTasksFile(output);
+    expect(reparsed).toHaveLength(tasks.length);
+    for (let i = 0; i < tasks.length; i++) {
+      expect(reparsed[i]!.id).toBe(tasks[i]!.id);
+      expect(reparsed[i]!.status).toBe(tasks[i]!.status);
+      expect(reparsed[i]!.title).toBe(tasks[i]!.title);
+    }
+  });
+});