feat: add analysis options tests related to errors severities

Author: Artur-Wisniewski

packages/custom_lint/test/analysis_options_test.dart

@@ -0,0 +1,148 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:analyzer/error/error.dart';
+import 'package:test/test.dart';
+
+import 'cli_process_test.dart';
+import 'create_project.dart';
+import 'peer_project_meta.dart';
+
+void main() {
+  group('Errors severities override', () {
+    Future<ProcessResult> runProcess(String workingDirectoryPath) async =>
+        Process.run(
+          'dart',
+          [customLintBinPath],
+          workingDirectory: workingDirectoryPath,
+          stdoutEncoding: utf8,
+          stderrEncoding: utf8,
+        );
+
+    Directory createLintUsageWith({
+      required Uri pluginUri,
+      required String analysisOptions,
+    }) =>
+        createLintUsage(
+          name: 'test_app',
+          source: {'lib/main.dart': 'void fn() {}'},
+          plugins: {'test_lint': pluginUri},
+          analysisOptions: analysisOptions,
+        );
+
+    Directory createTestPlugin({
+      ErrorSeverity errorSeverity = ErrorSeverity.INFO,
+    }) =>
+        createPlugin(
+          name: 'test_lint',
+          main: createPluginSource([
+            TestLintRule(
+              code: 'test_lint',
+              message: 'Test lint message',
+              errorSeverity: errorSeverity,
+            ),
+          ]),
+        );
+    test('correctly applies error severity from analysis_options.yaml',
+        () async {
+      final plugin = createTestPlugin(errorSeverity: ErrorSeverity.ERROR);
+
+      final app = createLintUsageWith(
+        pluginUri: plugin.uri,
+        analysisOptions: '''
+custom_lint:
+  errors:
+    test_lint: error
+''',
+      );
+
+      final process = await runProcess(app.path);
+
+      expect(trimDependencyOverridesWarning(process.stderr), isEmpty);
+      expect(process.stdout, '''
+Analyzing...
+
+  lib/main.dart:1:6 • Test lint message • test_lint • ERROR
+
+1 issue found.
+''');
+      expect(process.exitCode, 1);
+    });
+
+    test('correctly applies warning severity from analysis_options.yaml',
+        () async {
+      final plugin = createTestPlugin();
+
+      final app = createLintUsageWith(
+        pluginUri: plugin.uri,
+        analysisOptions: '''
+custom_lint:
+  errors:
+    test_lint: warning
+''',
+      );
+
+      final process = await runProcess(app.path);
+
+      expect(trimDependencyOverridesWarning(process.stderr), isEmpty);
+      expect(process.stdout, '''
+Analyzing...
+
+  lib/main.dart:1:6 • Test lint message • test_lint • WARNING
+
+1 issue found.
+''');
+      expect(process.exitCode, 1);
+    });
+
+    test('correctly applies info severity from analysis_options.yaml',
+        () async {
+      final plugin = createTestPlugin();
+
+      final app = createLintUsageWith(
+        pluginUri: plugin.uri,
+        analysisOptions: '''
+custom_lint:
+  errors:
+    test_lint: info
+''',
+      );
+
+      final process = await runProcess(app.path);
+
+      expect(trimDependencyOverridesWarning(process.stderr), isEmpty);
+      expect(process.stdout, '''
+Analyzing...
+
+  lib/main.dart:1:6 • Test lint message • test_lint • INFO
+
+1 issue found.
+''');
+      expect(process.exitCode, 1);
+    });
+
+    test('correctly applies none severity from analysis_options.yaml',
+        () async {
+      final plugin = createTestPlugin();
+
+      final app = createLintUsageWith(
+        pluginUri: plugin.uri,
+        analysisOptions: '''
+custom_lint:
+  errors:
+    test_lint: none
+''',
+      );
+
+      final process = await runProcess(app.path);
+
+      expect(trimDependencyOverridesWarning(process.stderr), isEmpty);
+      expect(process.stdout, '''
+Analyzing...
+
+No issues found!
+''');
+      expect(process.exitCode, 0);
+    });
+  });
+}

packages/custom_lint/test/create_project.dart

@@ -219,6 +219,7 @@ Directory createLintUsage({
   Directory? parent,
   Map<String, Uri> plugins = const {},
   Map<String, String> source = const {},
+  String? analysisOptions,
   Map<String, Uri> extraPackageConfig = const {},
   bool installAsDevDependency = true,
   required String name,
@@ -239,6 +240,7 @@ analyzer:
   plugins:
     - custom_lint
 
+${analysisOptions ?? ''}
 ''',
     pubspec: '''
 name: $name