Migrating block 50, first commit, after tool has run

tests/language_2/compile_time_constant_arguments_test.dart

Index: tests/language_2/compile_time_constant_arguments_test.dart
diff --git a/tests/language_2/compile_time_constant_arguments_test.dart b/tests/language_2/compile_time_constant_arguments_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..d572b6290236b4c7dae1cca6e9e1369865b7e8b6
--- /dev/null
+++ b/tests/language_2/compile_time_constant_arguments_test.dart
@@ -0,0 +1,22 @@
+// Copyright (c) 2012, 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.
+
+class A {
+  const A(a);
+  const A.named({a: 42});
+  const A.optional([a]);
+}
+
+main() {
+  const A(1);
+  const A(); //# 01: compile-time error
+  const A(1, 2); //# 02: compile-time error
+  const A.named();
+  const A.named(b: 1); //# 03: compile-time error
+  const A.named(a: 1, a: 2); //# 04: compile-time error
+  const A.named(a: 1, b: 2); //# 05: compile-time error
+  const A.optional();
+  const A.optional(42);
+  const A.optional(42, 54); //# 06: compile-time error
+}