From 6cf6572390fbe7e7eed3cfff51f1f98058ddc20e Mon Sep 17 00:00:00 2001
From: Sam Rawlins <srawlins@google.com>
Date: Mon, 26 Sep 2022 13:53:22 -0700
Subject: [PATCH 1/3] Support unnamed libraries

---
 lib/src/rules/library_names.dart | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/src/rules/library_names.dart b/lib/src/rules/library_names.dart
index a16f3c5fa..bd77b0b1a 100644
--- a/lib/src/rules/library_names.dart
+++ b/lib/src/rules/library_names.dart
@@ -57,8 +57,9 @@ class _Visitor extends SimpleAstVisitor<void> {
 
   @override
   void visitLibraryDirective(LibraryDirective node) {
-    if (!isLowerCaseUnderScoreWithDots(node.name2.toString())) {
-      rule.reportLint(node.name2);
+    var name = node.name2;
+    if (name != null && !isLowerCaseUnderScoreWithDots(name.toString())) {
+      rule.reportLint(name);
     }
   }
 }

From 48ffc8cbea6bf77d46685be8a78cf0d4ca027fb2 Mon Sep 17 00:00:00 2001
From: Sam Rawlins <srawlins@google.com>
Date: Mon, 26 Sep 2022 21:10:24 -0700
Subject: [PATCH 2/3] switch to unit tests

---
 test/rules/library_names_test.dart | 55 ++++++++++++++++++++++++++++++
 test_data/rules/library_names.dart |  7 ----
 2 files changed, 55 insertions(+), 7 deletions(-)
 create mode 100644 test/rules/library_names_test.dart
 delete mode 100644 test_data/rules/library_names.dart

diff --git a/test/rules/library_names_test.dart b/test/rules/library_names_test.dart
new file mode 100644
index 000000000..288deb090
--- /dev/null
+++ b/test/rules/library_names_test.dart
@@ -0,0 +1,55 @@
+// Copyright (c) 2022, 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:test_reflective_loader/test_reflective_loader.dart';
+
+import '../rule_test_support.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(LibraryNamesTest);
+  });
+}
+
+@reflectiveTest
+class LibraryNamesTest extends LintRuleTest {
+  @override
+  List<String> get experiments => ['unnamed-libraries'];
+
+  @override
+  String get lintRule => 'library_names';
+
+  test_libraryWithoutName() async {
+    await assertNoDiagnostics('''
+library;
+''');
+  }
+
+  test_lowercase() async {
+    await assertNoDiagnostics('''
+library foo;
+''');
+  }
+
+  test_noLibrary() async {
+    await assertNoDiagnostics('''
+''');
+  }
+
+  test_titlecase() async {
+    await assertDiagnostics('''
+library Foo;
+''', [
+      lint(8, 3),
+    ]);
+  }
+
+  test_uppercaseInDots() async {
+    await assertDiagnostics('''
+library one.Two.three;
+''', [
+      lint(8, 13),
+    ]);
+  }
+}
diff --git a/test_data/rules/library_names.dart b/test_data/rules/library_names.dart
deleted file mode 100644
index fd9fcd765..000000000
--- a/test_data/rules/library_names.dart
+++ /dev/null
@@ -1,7 +0,0 @@
-// 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.
-
-// test w/ `dart test -N library_names`
-
-library Foo; //LINT [9:3]

From 16fbf347325f3ddcd1798fb8eed514d68b47ba5b Mon Sep 17 00:00:00 2001
From: Sam Rawlins <srawlins@google.com>
Date: Mon, 26 Sep 2022 21:21:28 -0700
Subject: [PATCH 3/3] all

---
 test/rules/all.dart | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/test/rules/all.dart b/test/rules/all.dart
index 214e0c6f5..5090ca1aa 100644
--- a/test/rules/all.dart
+++ b/test/rules/all.dart
@@ -33,6 +33,7 @@ import 'discarded_futures_test.dart' as discarded_futures;
 import 'file_names_test.dart' as file_names;
 import 'flutter_style_todos_test.dart' as flutter_style_todos;
 import 'hash_and_equals_test.dart' as hash_and_equals;
+import 'library_names_test.dart' as library_names;
 import 'library_private_types_in_public_api_test.dart'
     as library_private_types_in_public_api;
 import 'literal_only_boolean_expressions_test.dart'
@@ -106,6 +107,7 @@ void main() {
   file_names.main();
   flutter_style_todos.main();
   hash_and_equals.main();
+  library_names.main();
   library_private_types_in_public_api.main();
   literal_only_boolean_expressions.main();
   missing_whitespace_between_adjacent_strings.main();