`analyzer_cli` move to SDK.

pkg/analyzer_cli/test/sdk_ext_test.dart

+// Copyright (c) 2015, 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.
+
+@TestOn("vm")
+
+/// Test that sdk extensions are properly detected in various scenarios.
+library analyzer_cli.test.sdk_ext;
+
+import 'dart:io';
+
+import 'package:analyzer_cli/src/driver.dart' show Driver, errorSink, outSink;
+import 'package:path/path.dart' as path;
+import 'package:test/test.dart';
+
+import 'utils.dart';
+
+main() {
+  group('Sdk extensions', () {
+    StringSink savedOutSink, savedErrorSink;
+    int savedExitCode;
+    Directory savedCurrentDirectory;
+    setUp(() {
+      savedOutSink = outSink;
+      savedErrorSink = errorSink;
+      savedExitCode = exitCode;
+      outSink = new StringBuffer();
+      errorSink = new StringBuffer();
+      savedCurrentDirectory = Directory.current;
+    });
+    tearDown(() {
+      outSink = savedOutSink;
+      errorSink = savedErrorSink;
+      exitCode = savedExitCode;
+      Directory.current = savedCurrentDirectory;
+    });
+
+    test('--packages option supplied', () async {
+      var testDir = path.join(testDirectory, 'data', 'no_packages_file');
+      Directory.current = new Directory(testDir);
+      var packagesPath = path.join('..', 'packages_file', '.packages');
+      new Driver().start(['--packages', packagesPath, 'sdk_ext_user.dart']);
+
+      expect(exitCode, 0);
+    });
+
+    test('.packages file present', () async {
+      var testDir = path.join(testDirectory, 'data', 'packages_file');
+      Directory.current = new Directory(testDir);
+      new Driver().start(['sdk_ext_user.dart']);
+
+      expect(exitCode, 0);
+    });
+  });
+}