Add a test to verify that analysis server code generation is up to date.

pkg/analysis_server/tool/spec/check_all_test.dart

+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library check.all;
+
+import 'dart:io';
+
+import 'package:path/path.dart';
+
+import 'codegen_tools.dart';
+import 'generate_all.dart';
+
+/**
+ * Check that all targets have been code generated.  If they haven't tell the
+ * user to run generate_all.dart.
+ */
+main() {
+  String script = Platform.script.toFilePath(windows: Platform.isWindows);
+  Directory.current = new Directory(dirname(script));
+  bool generateAllNeeded = false;
+  for (GeneratedFile generatedFile in allTargets) {
+    if (!generatedFile.check()) {
+      print(
+          '${generatedFile.outputFile.absolute} does not have expected contents.');
+      generateAllNeeded = true;
+    }
+  }
+  if (generateAllNeeded) {
+    print('Please regenerate using:');
+    String executable = Platform.executable;
+    String packageRoot = '';
+    if (Platform.packageRoot.isNotEmpty) {
+      packageRoot = ' --package-root=${Platform.packageRoot}';
+    }
+    String generateScript = join(dirname(script), 'generate_all.dart');
+    print('  $executable$packageRoot $generateScript');
+    exit(1);
+  } else {
+    print('All generated files up to date.');
+  }
+}