feat: mosaic uninstall (IUH-M01) (#429)

packages/mosaic/src/commands/uninstall.spec.ts

@@ -0,0 +1,234 @@
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
+import { mkdtempSync, rmSync, mkdirSync, writeFileSync, existsSync, readFileSync } from 'node:fs';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { Command } from 'commander';
+
+import {
+  registerUninstallCommand,
+  reverseRuntimeAssets,
+  reverseNpmrc,
+  removeFramework,
+  removeCli,
+} from './uninstall.js';
+import { writeManifest, createManifest } from '../runtime/install-manifest.js';
+
+// ─── helpers ─────────────────────────────────────────────────────────────────
+
+let tmpDir: string;
+let mosaicHome: string;
+
+beforeEach(() => {
+  tmpDir = mkdtempSync(join(tmpdir(), 'mosaic-uninstall-test-'));
+  mosaicHome = join(tmpDir, 'mosaic');
+  mkdirSync(mosaicHome, { recursive: true });
+  vi.clearAllMocks();
+});
+
+afterEach(() => {
+  rmSync(tmpDir, { recursive: true, force: true });
+});
+
+// ─── command registration ────────────────────────────────────────────────────
+
+describe('registerUninstallCommand', () => {
+  it('registers an "uninstall" command on the program', () => {
+    const program = new Command();
+    program.exitOverride();
+    registerUninstallCommand(program);
+    const names = program.commands.map((c) => c.name());
+    expect(names).toContain('uninstall');
+  });
+
+  it('registers the expected options', () => {
+    const program = new Command();
+    program.exitOverride();
+    registerUninstallCommand(program);
+    const cmd = program.commands.find((c) => c.name() === 'uninstall')!;
+    const optNames = cmd.options.map((o) => o.long);
+    expect(optNames).toContain('--framework');
+    expect(optNames).toContain('--cli');
+    expect(optNames).toContain('--gateway');
+    expect(optNames).toContain('--all');
+    expect(optNames).toContain('--keep-data');
+    expect(optNames).toContain('--dry-run');
+  });
+});
+
+// ─── reverseNpmrc ─────────────────────────────────────────────────────────────
+
+describe('reverseNpmrc', () => {
+  it('does nothing when .npmrc does not exist (heuristic mode, no manifest)', () => {
+    // Should not throw; mosaicHome has no manifest and home has no .npmrc
+    const warnSpy = vi.spyOn(console, 'warn').mockImplementation(() => undefined);
+    expect(() => reverseNpmrc(mosaicHome, true)).not.toThrow();
+    warnSpy.mockRestore();
+  });
+
+  it('dry-run mode logs removal without mutating', () => {
+    // Write a manifest with a known npmrc line
+    writeManifest(
+      mosaicHome,
+      createManifest('0.0.24', 2, {
+        npmrcLines: [
+          '@mosaicstack:registry=https://git.mosaicstack.dev/api/packages/mosaicstack/npm/',
+        ],
+      }),
+    );
+    // reverseNpmrc reads ~/.npmrc from actual homedir; dry-run won't touch anything
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    expect(() => reverseNpmrc(mosaicHome, true)).not.toThrow();
+    logSpy.mockRestore();
+  });
+});
+
+// ─── removeFramework ──────────────────────────────────────────────────────────
+
+describe('removeFramework', () => {
+  it('removes the entire directory when --keep-data is false', () => {
+    writeFileSync(join(mosaicHome, 'AGENTS.md'), '# agents', 'utf8');
+
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    removeFramework(mosaicHome, false, false);
+    logSpy.mockRestore();
+
+    expect(existsSync(mosaicHome)).toBe(false);
+  });
+
+  it('preserves SOUL.md and memory/ when --keep-data is true', () => {
+    writeFileSync(join(mosaicHome, 'AGENTS.md'), '# agents', 'utf8');
+    writeFileSync(join(mosaicHome, 'SOUL.md'), '# soul', 'utf8');
+    mkdirSync(join(mosaicHome, 'memory'), { recursive: true });
+    writeFileSync(join(mosaicHome, 'memory', 'note.md'), 'note', 'utf8');
+
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    removeFramework(mosaicHome, true, false);
+    logSpy.mockRestore();
+
+    expect(existsSync(join(mosaicHome, 'SOUL.md'))).toBe(true);
+    expect(existsSync(join(mosaicHome, 'memory'))).toBe(true);
+    expect(existsSync(join(mosaicHome, 'AGENTS.md'))).toBe(false);
+  });
+
+  it('preserves USER.md and TOOLS.md when --keep-data is true', () => {
+    writeFileSync(join(mosaicHome, 'AGENTS.md'), '# agents', 'utf8');
+    writeFileSync(join(mosaicHome, 'USER.md'), '# user', 'utf8');
+    writeFileSync(join(mosaicHome, 'TOOLS.md'), '# tools', 'utf8');
+
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    removeFramework(mosaicHome, true, false);
+    logSpy.mockRestore();
+
+    expect(existsSync(join(mosaicHome, 'USER.md'))).toBe(true);
+    expect(existsSync(join(mosaicHome, 'TOOLS.md'))).toBe(true);
+  });
+
+  it('dry-run logs but does not remove', () => {
+    writeFileSync(join(mosaicHome, 'AGENTS.md'), '# agents', 'utf8');
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+
+    removeFramework(mosaicHome, false, true);
+    logSpy.mockRestore();
+
+    expect(existsSync(mosaicHome)).toBe(true);
+  });
+
+  it('handles missing mosaicHome gracefully', () => {
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    expect(() => removeFramework('/nonexistent/path', false, false)).not.toThrow();
+    logSpy.mockRestore();
+  });
+});
+
+// ─── reverseRuntimeAssets ─────────────────────────────────────────────────────
+
+describe('reverseRuntimeAssets', () => {
+  it('dry-run does not throw in heuristic mode (no manifest)', () => {
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    const warnSpy = vi.spyOn(console, 'warn').mockImplementation(() => undefined);
+
+    expect(() => reverseRuntimeAssets(mosaicHome, true)).not.toThrow();
+
+    logSpy.mockRestore();
+    warnSpy.mockRestore();
+  });
+
+  it('restores backup when present (with manifest)', () => {
+    // Create a fake dest and backup inside tmpDir
+    const claudeDir = join(tmpDir, 'dot-claude');
+    mkdirSync(claudeDir, { recursive: true });
+    const dest = join(claudeDir, 'settings.json');
+    const backup = join(claudeDir, 'settings.json.mosaic-bak-20260405120000');
+    writeFileSync(dest, '{"current": true}', 'utf8');
+    writeFileSync(backup, '{"original": true}', 'utf8');
+
+    // Write a manifest pointing to these exact paths
+    writeManifest(
+      mosaicHome,
+      createManifest('0.0.24', 2, {
+        runtimeAssetCopies: [{ source: '/src/settings.json', dest, backup }],
+      }),
+    );
+
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    reverseRuntimeAssets(mosaicHome, false);
+    logSpy.mockRestore();
+
+    // Backup removed, dest has original content
+    expect(existsSync(backup)).toBe(false);
+    expect(readFileSync(dest, 'utf8')).toBe('{"original": true}');
+  });
+
+  it('removes managed copy when no backup present (with manifest)', () => {
+    const claudeDir = join(tmpDir, 'dot-claude2');
+    mkdirSync(claudeDir, { recursive: true });
+    const dest = join(claudeDir, 'CLAUDE.md');
+    writeFileSync(dest, '# managed', 'utf8');
+
+    writeManifest(
+      mosaicHome,
+      createManifest('0.0.24', 2, {
+        runtimeAssetCopies: [{ source: '/src/CLAUDE.md', dest }],
+      }),
+    );
+
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    reverseRuntimeAssets(mosaicHome, false);
+    logSpy.mockRestore();
+
+    expect(existsSync(dest)).toBe(false);
+  });
+
+  it('dry-run with manifest logs but does not remove', () => {
+    const claudeDir = join(tmpDir, 'dot-claude3');
+    mkdirSync(claudeDir, { recursive: true });
+    const dest = join(claudeDir, 'hooks-config.json');
+    writeFileSync(dest, '{}', 'utf8');
+
+    writeManifest(
+      mosaicHome,
+      createManifest('0.0.24', 2, {
+        runtimeAssetCopies: [{ source: '/src/hooks-config.json', dest }],
+      }),
+    );
+
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    reverseRuntimeAssets(mosaicHome, true);
+    logSpy.mockRestore();
+
+    // File should still exist in dry-run mode
+    expect(existsSync(dest)).toBe(true);
+  });
+});
+
+// ─── removeCli ────────────────────────────────────────────────────────────────
+
+describe('removeCli', () => {
+  it('dry-run logs the npm command without running it', () => {
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined);
+    removeCli(true);
+    const output = logSpy.mock.calls.map((c) => c[0] as string).join('\n');
+    expect(output).toContain('npm uninstall -g @mosaicstack/mosaic');
+    logSpy.mockRestore();
+  });
+});