test: enforce coverage thresholds

tests/version.test.ts

@@ -1,7 +1,18 @@
-import { readFileSync } from 'node:fs';
-import { fileURLToPath } from 'node:url';
+import fs from 'node:fs';
+import os from 'node:os';
+import path from 'node:path';
+import { fileURLToPath, pathToFileURL } from 'node:url';
 import { afterEach, describe, expect, it } from 'vitest';
-import { formatVersionLine, resolveGitSha, resolvePackageVersion } from '../src/lib/version.js';
+import { FALLBACK_VERSION, formatVersionLine, resolveGitSha, resolvePackageVersion } from '../src/lib/version.js';
+
+function withTempDir<T>(fn: (dir: string) => T): T {
+  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'bird-version-test-'));
+  try {
+    return fn(dir);
+  } finally {
+    fs.rmSync(dir, { recursive: true, force: true });
+  }
+}
 
 describe('getCliVersion', () => {
   afterEach(() => {
@@ -10,7 +21,7 @@ describe('getCliVersion', () => {
   });
 
   it('reads package.json version when available', () => {
-    const raw = readFileSync(fileURLToPath(new URL('../package.json', import.meta.url)), 'utf8');
+    const raw = fs.readFileSync(fileURLToPath(new URL('../package.json', import.meta.url)), 'utf8');
     const pkg = JSON.parse(raw) as { version?: unknown };
     expect(resolvePackageVersion()).toBe(pkg.version);
   });
@@ -21,10 +32,98 @@ describe('getCliVersion', () => {
     expect(formatVersionLine('not a url')).toBe('9.9.9 (abcdef12)');
   });
 
-  it('adds git sha when available', () => {
-    const version = resolvePackageVersion();
-    const sha = resolveGitSha();
-    expect(sha).toMatch(/^[0-9a-f]{8}$/);
-    expect(formatVersionLine()).toBe(`${version} (${sha})`);
+  it('resolves package.json version from importMetaUrl root', () => {
+    withTempDir((dir) => {
+      fs.writeFileSync(path.join(dir, 'package.json'), JSON.stringify({ version: '1.2.3' }));
+      const entry = path.join(dir, 'src', 'entry.ts');
+      fs.mkdirSync(path.dirname(entry), { recursive: true });
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolvePackageVersion(pathToFileURL(entry).href)).toBe('1.2.3');
+    });
+  });
+
+  it('falls back to VERSION file when package.json missing', () => {
+    withTempDir((dir) => {
+      fs.writeFileSync(path.join(dir, 'VERSION'), '2.0.0\n');
+      const entry = path.join(dir, 'entry.ts');
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolvePackageVersion(pathToFileURL(entry).href)).toBe('2.0.0');
+    });
+  });
+
+  it('falls back to unknown when no version files exist', () => {
+    withTempDir((dir) => {
+      const entry = path.join(dir, 'a', 'b', 'c', 'entry.ts');
+      fs.mkdirSync(path.dirname(entry), { recursive: true });
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolvePackageVersion(pathToFileURL(entry).href)).toBe(FALLBACK_VERSION);
+    });
+  });
+
+  it('resolves git sha from .git directory HEAD', () => {
+    withTempDir((dir) => {
+      const gitDir = path.join(dir, '.git');
+      fs.mkdirSync(gitDir, { recursive: true });
+      fs.writeFileSync(path.join(gitDir, 'HEAD'), '0123456789abcdef0123456789abcdef01234567\n');
+
+      const entry = path.join(dir, 'entry.ts');
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolveGitSha(pathToFileURL(entry).href)).toBe('01234567');
+    });
+  });
+
+  it('resolves git sha from ref file and packed-refs', () => {
+    withTempDir((dir) => {
+      const gitDir = path.join(dir, '.git');
+      fs.mkdirSync(path.join(gitDir, 'refs', 'heads'), { recursive: true });
+      fs.writeFileSync(path.join(gitDir, 'HEAD'), 'ref: refs/heads/main\n');
+      fs.writeFileSync(path.join(gitDir, 'refs', 'heads', 'main'), 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n');
+
+      const entry = path.join(dir, 'entry.ts');
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolveGitSha(pathToFileURL(entry).href)).toBe('aaaaaaaa');
+
+      fs.rmSync(path.join(gitDir, 'refs', 'heads', 'main'), { force: true });
+      fs.writeFileSync(
+        path.join(gitDir, 'packed-refs'),
+        ['# pack-refs with: peeled fully-peeled', 'bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb refs/heads/main', ''].join(
+          '\n',
+        ),
+      );
+      expect(resolveGitSha(pathToFileURL(entry).href)).toBe('bbbbbbbb');
+    });
+  });
+
+  it('resolves git sha from .git file gitdir pointer', () => {
+    withTempDir((dir) => {
+      const realGitDir = path.join(dir, '.realgit');
+      fs.mkdirSync(realGitDir, { recursive: true });
+      fs.writeFileSync(path.join(realGitDir, 'HEAD'), 'cccccccccccccccccccccccccccccccccccccccc\n');
+      fs.writeFileSync(path.join(dir, '.git'), 'gitdir: .realgit\n');
+
+      const entry = path.join(dir, 'entry.ts');
+      fs.writeFileSync(entry, '// noop');
+
+      expect(resolveGitSha(pathToFileURL(entry).href)).toBe('cccccccc');
+    });
+  });
+
+  it('formats version line with version + sha when both available', () => {
+    withTempDir((dir) => {
+      fs.writeFileSync(path.join(dir, 'package.json'), JSON.stringify({ version: '3.3.3' }));
+      const gitDir = path.join(dir, '.git');
+      fs.mkdirSync(gitDir, { recursive: true });
+      fs.writeFileSync(path.join(gitDir, 'HEAD'), 'dddddddddddddddddddddddddddddddddddddddd\n');
+
+      const entry = path.join(dir, 'entry.ts');
+      fs.writeFileSync(entry, '// noop');
+
+      expect(formatVersionLine(pathToFileURL(entry).href)).toBe('3.3.3 (dddddddd)');
+    });
   });
 });