One extension manager (to bind them all).

pkg/analysis_server/test/integration/analysis/lint_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 test.integration.analysis.lint;
+
+import 'package:analysis_server/plugin/protocol/protocol.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+import 'package:unittest/unittest.dart';
+
+import '../../utils.dart';
+import '../integration_tests.dart';
+
+main() {
+  initializeTestEnvironment();
+  defineReflectiveTests(LintIntegrationTest);
+}
+
+@reflectiveTest
+class LintIntegrationTest extends AbstractAnalysisServerIntegrationTest {
+  test_no_lints_when_not_specified() async {
+    String source = sourcePath('test.dart');
+    writeFile(
+        source,
+        '''
+class abc { // lint: not CamelCase (should get ignored though)
+}''');
+    standardAnalysisSetup();
+
+    await analysisFinished;
+    expect(currentAnalysisErrors[source], isList);
+    // Should be empty without .analysis_options.
+    List<AnalysisError> errors = currentAnalysisErrors[source];
+    expect(errors, hasLength(0));
+  }
+
+  test_simple_lint() async {
+    writeFile(
+        sourcePath('.analysis_options'),
+        '''
+linter:
+  rules:
+    - camel_case_types
+''');
+
+    String source = sourcePath('test.dart');
+    writeFile(
+        source,
+        '''
+class a { // lint: not CamelCase
+}''');
+
+    standardAnalysisSetup();
+
+    await analysisFinished;
+
+    expect(currentAnalysisErrors[source], isList);
+    List<AnalysisError> errors = currentAnalysisErrors[source];
+    expect(errors, hasLength(1));
+    AnalysisError error = errors[0];
+    expect(error.location.file, source);
+    expect(error.severity, AnalysisErrorSeverity.INFO);
+    expect(error.type, AnalysisErrorType.LINT);
+  }
+}