#2162. Add static member and non-redirecting factory constructor conflict test

Language/Classes/Class_Member_Conflicts/static_member_and_constructor_t04.dart

@@ -6,7 +6,8 @@
 /// constructor named `C.n` and a static member with basename `n`.
 ///
 /// @description Check that it is a compile-time error if class `C` declares a
-/// factory constructor named `C.n` and a static member with basename `n`.
+/// redirecting factory constructor named `C.n` and a static member with
+/// basename `n`.
 /// @author [email protected]
 
 class C {

Language/Classes/Class_Member_Conflicts/static_member_and_constructor_t05.dart

@@ -0,0 +1,92 @@
+// Copyright (c) 2025, 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.
+
+/// @assertion Let `C` be a class. It is a compile-time error if `C` declares a
+/// constructor named `C.n` and a static member with basename `n`.
+///
+/// @description Check that it is a compile-time error if class `C` declares a
+/// non-redirecting factory constructor named `C.n` and a static member with
+/// basename `n`.
+/// @author [email protected]
+
+class C {
+  C();
+
+  factory C.s1() => C();
+//          ^^
+// [analyzer] unspecified
+  static set s1(var value) {}
+//           ^^
+// [cfe] unspecified
+
+  factory C.s2() => C();
+//          ^^
+// [analyzer] unspecified
+  static void s2() {}
+//            ^^
+// [cfe] unspecified
+
+  factory C.s3() => C();
+//          ^^
+// [analyzer] unspecified
+  static int s3() => 1;
+//           ^^
+// [cfe] unspecified
+
+  factory C.s4() => C();
+//          ^^
+// [analyzer] unspecified
+  static int get s4 => 1;
+//               ^^
+// [cfe] unspecified
+
+  factory C.s5() => C();
+//          ^^
+// [analyzer] unspecified
+  static int s5 = 1;
+//           ^^
+// [cfe] unspecified
+}
+
+extension type ET(int n) {
+  factory ET.s1(int n) => ET(n);
+//           ^^
+// [analyzer] unspecified
+  static set s1(var _) {}
+//           ^^
+// [cfe] unspecified
+
+  factory ET.s2(int n) => ET(n);
+//           ^^
+// [analyzer] unspecified
+  static void s2() {}
+//            ^^
+// [cfe] unspecified
+
+  factory ET.s3(int n) => ET(n);
+//           ^^
+// [analyzer] unspecified
+  static int s3() => 1;
+//           ^^
+// [cfe] unspecified
+
+  factory ET.s4(int n) => ET(n);
+//           ^^
+// [analyzer] unspecified
+  static int get s4 => 1;
+//               ^^
+// [cfe] unspecified
+
+  factory ET.s5(int n) => ET(n);
+//           ^^
+// [analyzer] unspecified
+  static int s5 = 1;
+//           ^^
+// [cfe] unspecified
+}
+
+main() {
+  print(C);
+  print(ET);
+}