diff --git a/pkg/linter/test/directives_ordering_test.dart b/pkg/linter/test/directives_ordering_test.dart
deleted file mode 100644
index eabd1a0..0000000
--- a/pkg/linter/test/directives_ordering_test.dart
+++ /dev/null
@@ -1,101 +0,0 @@
-// Copyright (c) 2024, 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:linter/src/rules/directives_ordering.dart';
-import 'package:test/test.dart';
-import 'package:test_reflective_loader/test_reflective_loader.dart';
-
-import 'rule_test_support.dart';
-
-// ignore_for_file: non_constant_identifier_names
-void main() {
-  defineReflectiveSuite(() {
-    defineReflectiveTests(DirectivesOrderingTest);
-  });
-
-  group('compareDirectives', () {
-    void checkSection(List<String> correctlyOrderedImports) {
-      for (int i = 0; i < correctlyOrderedImports.length; i++) {
-        var a = correctlyOrderedImports[i];
-        expect(compareDirectives(a, a), 0,
-            reason: '"$a" sorts the same as itself');
-
-        for (int j = i + 1; j < correctlyOrderedImports.length; j++) {
-          var b = correctlyOrderedImports[j];
-          expect(compareDirectives(a, b), lessThan(0),
-              reason: '"$a" sorts before "$b"');
-          expect(compareDirectives(b, a), greaterThan(0),
-              reason: '"$b" sorts after "$a"');
-        }
-      }
-    }
-
-    test('dart: imports', () {
-      checkSection(const [
-        'dart:aaa',
-        'dart:bbb',
-      ]);
-    });
-
-    test('package: imports', () {
-      checkSection(const [
-        'package:aa/bb.dart',
-        'package:aaa/aaa.dart',
-        'package:aaa/ccc.dart',
-        'package:bbb/bbb.dart',
-      ]);
-    });
-
-    test('relative imports', () {
-      checkSection(const [
-        '/foo5.dart',
-        '../../foo4.dart',
-        '../foo2/a.dart',
-        '../foo3.dart',
-        './foo2.dart',
-        'a.dart',
-        'aaa/aaa.dart',
-        'bbb/bbb.dart',
-        'foo1.dart',
-      ]);
-    });
-  });
-}
-
-@reflectiveTest
-class DirectivesOrderingTest extends LintRuleTest {
-  @override
-  String get lintRule => LintNames.directives_ordering;
-
-  test_partOrder_sorted() async {
-    newFile('$testPackageLibPath/a.dart', r'''
-part of 'test.dart';
-''');
-    newFile('$testPackageLibPath/b.dart', r'''
-part of 'test.dart';
-''');
-
-    await assertNoDiagnostics(r'''
-part 'a.dart';
-part 'b.dart';
-''');
-  }
-
-  test_partOrder_unsorted() async {
-    newFile('$testPackageLibPath/a.dart', r'''
-part of 'test.dart';
-''');
-    newFile('$testPackageLibPath/b.dart', r'''
-part of 'test.dart';
-''');
-
-    // Because parts can contain augmentations, whose order of
-    // application matters, we do *not* want to enforce part sorting.
-    // See: https://github.com/dart-lang/linter/issues/4945
-    await assertNoDiagnostics(r'''
-part 'b.dart';
-part 'a.dart';
-''');
-  }
-}
diff --git a/pkg/linter/test/rules/directives_ordering_test.dart b/pkg/linter/test/rules/directives_ordering_test.dart
index 23aab74..8f30709 100644
--- a/pkg/linter/test/rules/directives_ordering_test.dart
+++ b/pkg/linter/test/rules/directives_ordering_test.dart
@@ -2,6 +2,8 @@
 // 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:linter/src/rules/directives_ordering.dart';
+import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../rule_test_support.dart';
@@ -10,6 +12,54 @@
   defineReflectiveSuite(() {
     defineReflectiveTests(DirectivesOrderingTest);
   });
+
+  group('compareDirectives', () {
+    void checkSection(List<String> correctlyOrderedImports) {
+      for (int i = 0; i < correctlyOrderedImports.length; i++) {
+        var a = correctlyOrderedImports[i];
+        expect(compareDirectives(a, a), 0,
+            reason: '"$a" sorts the same as itself');
+
+        for (int j = i + 1; j < correctlyOrderedImports.length; j++) {
+          var b = correctlyOrderedImports[j];
+          expect(compareDirectives(a, b), lessThan(0),
+              reason: '"$a" sorts before "$b"');
+          expect(compareDirectives(b, a), greaterThan(0),
+              reason: '"$b" sorts after "$a"');
+        }
+      }
+    }
+
+    test('dart: imports', () {
+      checkSection(const [
+        'dart:aaa',
+        'dart:bbb',
+      ]);
+    });
+
+    test('package: imports', () {
+      checkSection(const [
+        'package:aa/bb.dart',
+        'package:aaa/aaa.dart',
+        'package:aaa/ccc.dart',
+        'package:bbb/bbb.dart',
+      ]);
+    });
+
+    test('relative imports', () {
+      checkSection(const [
+        '/foo5.dart',
+        '../../foo4.dart',
+        '../foo2/a.dart',
+        '../foo3.dart',
+        './foo2.dart',
+        'a.dart',
+        'aaa/aaa.dart',
+        'bbb/bbb.dart',
+        'foo1.dart',
+      ]);
+    });
+  });
 }
 
 @reflectiveTest
@@ -196,6 +246,37 @@
 ''');
   }
 
+  test_partOrder_sorted() async {
+    newFile('$testPackageLibPath/a.dart', r'''
+part of 'test.dart';
+''');
+    newFile('$testPackageLibPath/b.dart', r'''
+part of 'test.dart';
+''');
+
+    await assertNoDiagnostics(r'''
+part 'a.dart';
+part 'b.dart';
+''');
+  }
+
+  test_partOrder_unsorted() async {
+    newFile('$testPackageLibPath/a.dart', r'''
+part of 'test.dart';
+''');
+    newFile('$testPackageLibPath/b.dart', r'''
+part of 'test.dart';
+''');
+
+    // Because parts can contain augmentations, whose order of
+    // application matters, we do *not* want to enforce part sorting.
+    // See: https://github.com/dart-lang/linter/issues/4945
+    await assertNoDiagnostics(r'''
+part 'b.dart';
+part 'a.dart';
+''');
+  }
+
   test_reportOneNodeOnlyOnce() async {
     newFile('$testPackageLibPath/a.dart', '');
     await assertDiagnostics(r'''