refactor: add logger helper unit tests

Author: John Doe

packages/utils/src/lib/logger.unit.test.ts

@@ -0,0 +1,64 @@
+import ansis from 'ansis';
+import path from 'node:path';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { formatCommand } from './logger.js';
+
+describe('formatCommand', () => {
+  const originalCwd = process.cwd();
+
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  it('should format complex command with cwd, env, and status', () => {
+    vi.spyOn(path, 'relative').mockReturnValue('<CWD>');
+    expect(
+      formatCommand(
+        'npx eslint . --format=json',
+        {
+          cwd: '<CWD>',
+          env: { CP_VERBOSE: true },
+        },
+        'failure',
+      ),
+    ).toBe(
+      `${ansis.blue('<CWD>')} ${ansis.red('$')} ${ansis.gray('CP_VERBOSE=true')}  npx eslint . --format=json`,
+    );
+  });
+
+  it.each([
+    [undefined, ansis.blue], // default to pending
+    ['pending', ansis.blue],
+    ['success', ansis.green],
+    ['failure', ansis.red],
+  ])(`should format command status %s explicitly`, (status, color) => {
+    expect(
+      formatCommand('npx eslint . --format=json', {}, 'pending'),
+    ).toContain(`${color('$')}`);
+  });
+
+  it('should include cwd prefix when cwd is provided and different from process.cwd()', () => {
+    const mockCwd = path.join(originalCwd, 'src');
+    vi.spyOn(path, 'relative').mockReturnValue('src');
+
+    expect(formatCommand('npx -v', { cwd: mockCwd })).toStartWith(
+      `${ansis.blue('src')} `,
+    );
+  });
+
+  it('should not include cwd prefix when cwd is same as process.cwd()', () => {
+    vi.spyOn(path, 'relative').mockReturnValue('');
+    expect(formatCommand('npx -v', { cwd: originalCwd })).toStartWith(
+      `${ansis.blue('$')}`,
+    );
+  });
+
+  it('should format command with single environment variable', () => {
+    const result = formatCommand('npx eslint .', {
+      env: { NODE_ENV: 'test' },
+    });
+    expect(result).toBe(
+      `${ansis.blue('$')} ${ansis.gray('NODE_ENV=test')}  npx eslint .`,
+    );
+  });
+});