Interpolated strings are never considered compile time const

tests/language/src/MapLiteral2Test.dart

 // Copyright (c) 2011, 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 program for map literals.
 
-final AA = 1;
-final BB = 2;
-
 int nextValCtr;
 
 get nextVal() {
   return nextValCtr++;
 }
 
-class MapLiteral2Test {
-  static testMain() {
-    // Map literals with string interpolation in keys.
-    var map = const { "a$AA": 88, "b$BB": 99 };
-    Expect.equals(2, map.length);
-    Expect.equals("a1", "a$AA");
-    Expect.equals(88, map["a1"]);
-    Expect.equals("b2", "b$BB");
-    Expect.equals(99, map["b2"]);
-
-    nextValCtr = 0;
-    map = {"a$nextVal": "Grey", "a$nextVal": "Poupon" };
-    Expect.equals(true, map.containsKey("a0"));
-    Expect.equals(true, map.containsKey("a1"));
-    Expect.equals("Grey", map["a0"]);
-    Expect.equals("Poupon", map["a1"]);
-  }
+main() {
+  // Map literals with string interpolation in keys.
+  nextValCtr = 0;
+  var map = {"a$nextVal": "Grey", "a$nextVal": "Poupon" };
+  Expect.equals(true, map.containsKey("a0"));
+  Expect.equals(true, map.containsKey("a1"));
+  Expect.equals("Grey", map["a0"]);
+  Expect.equals("Poupon", map["a1"]);
 }
-
-
-
-main() {
-  MapLiteral2Test.testMain();
-}