Add an analytics domain to the analysis server.

pkg/analysis_server/test/integration/analytics/enable_test.dart

+// Copyright (c) 2017, 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.
+
+import 'package:analysis_server/protocol/protocol_generated.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import '../support/integration_tests.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(EnableTest);
+  });
+}
+
+@reflectiveTest
+class EnableTest extends AbstractAnalysisServerIntegrationTest {
+  test_call_enable() async {
+    standardAnalysisSetup();
+
+    // Toggle the value twice, and verify the changes.
+    AnalyticsIsEnabledResult result1 = await sendAnalyticsIsEnabled();
+    await sendAnalyticsEnable(!result1.enabled);
+
+    AnalyticsIsEnabledResult result2 = await sendAnalyticsIsEnabled();
+    expect(result2.enabled, !result1.enabled);
+
+    await sendAnalyticsEnable(result1.enabled);
+    result2 = await sendAnalyticsIsEnabled();
+    expect(result2.enabled, result1.enabled);
+  }
+}