message: Add automatic html extension test
diff: @@ -25,6 +25,12 @@ test('index-html-is-index-html', testServer, '/index.html', {
  contentType: 'text/html; charset=utf-8',
  fullPath: path.join(examplePath, 'index.html'),
  });
  +test('auto-html-extension', testServer, '/index', {
  + action: 'serveFile',
  + cacheHint: {},
  + contentType: 'text/html; charset=utf-8',
  + fullPath: path.join(examplePath, 'index.html'),
  +});
  test('static-has-cache-hint', testServer, '/static/0.chunk.js', {
  action: 'serveFile',
  cacheHint: {
  