Get the most basic mixin applications working.

tests/language/mixin_field_test.dart

+// Copyright (c) 2013, 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 S {
+  var foo = "S-foo";
+}
+
+class M1 {
+  final bar = "M1-bar";
+}
+
+class M2 {
+  var baz = "M2-baz";
+}
+
+typedef C = S with M1;
+typedef D = S with M1, M2;
+typedef E = S with M2, M1;
+
+class F extends E {
+  var fez = "F-fez";
+}
+
+main() {
+  var c = new C();
+  var d = new D();
+  var e = new E();
+  var f = new F();
+
+  Expect.equals("S-foo", c.foo);
+  Expect.equals("S-foo", d.foo);
+  Expect.equals("S-foo", e.foo);
+  Expect.equals("S-foo", f.foo);
+
+  Expect.equals("M1-bar", c.bar);
+  Expect.equals("M1-bar", d.bar);
+  Expect.equals("M1-bar", e.bar);
+  Expect.equals("M1-bar", f.bar);
+
+  Expect.throws(() => c.baz, (error) => error is NoSuchMethodError);

[ahe, 2013/01/18 12:40:12]

You could create a help function for: (error) => error is NoSuchMethodError

+  Expect.equals("M2-baz", d.baz);
+  Expect.equals("M2-baz", e.baz);
+  Expect.equals("M2-baz", f.baz);
+
+  Expect.throws(() => c.fez, (error) => error is NoSuchMethodError);
+  Expect.throws(() => d.fez, (error) => error is NoSuchMethodError);
+  Expect.throws(() => e.fez, (error) => error is NoSuchMethodError);
+  Expect.equals("F-fez", f.fez);
+
+  c.foo = "S-foo-c";
+  Expect.equals("S-foo-c", c.foo);
+  Expect.equals("S-foo", d.foo);
+  Expect.equals("S-foo", e.foo);
+  Expect.equals("S-foo", f.foo);
+
+  d.foo = "S-foo-d";
+  Expect.equals("S-foo-c", c.foo);
+  Expect.equals("S-foo-d", d.foo);
+  Expect.equals("S-foo", e.foo);
+  Expect.equals("S-foo", f.foo);
+
+  e.foo = "S-foo-e";
+  Expect.equals("S-foo-c", c.foo);
+  Expect.equals("S-foo-d", d.foo);
+  Expect.equals("S-foo-e", e.foo);
+  Expect.equals("S-foo", f.foo);
+
+  f.foo = "S-foo-f";
+  Expect.equals("S-foo-c", c.foo);
+  Expect.equals("S-foo-d", d.foo);
+  Expect.equals("S-foo-e", e.foo);
+  Expect.equals("S-foo-f", f.foo);
+
+  Expect.throws(() => c.bar = 0, (error) => error is NoSuchMethodError);
+  Expect.throws(() => d.bar = 0, (error) => error is NoSuchMethodError);
+  Expect.throws(() => e.bar = 0, (error) => error is NoSuchMethodError);
+  Expect.throws(() => f.bar = 0, (error) => error is NoSuchMethodError);
+  Expect.equals("M1-bar", c.bar);
+  Expect.equals("M1-bar", d.bar);
+  Expect.equals("M1-bar", e.bar);
+  Expect.equals("M1-bar", f.bar);
+
+  Expect.throws(() => c.baz = 0, (error) => error is NoSuchMethodError);
+  Expect.throws(() => c.baz, (error) => error is NoSuchMethodError);
+  Expect.equals("M2-baz", d.baz);
+  Expect.equals("M2-baz", e.baz);
+  Expect.equals("M2-baz", f.baz);
+
+  d.baz = "M2-baz-d";
+  Expect.throws(() => c.baz, (error) => error is NoSuchMethodError);
+  Expect.equals("M2-baz-d", d.baz);
+  Expect.equals("M2-baz", e.baz);
+  Expect.equals("M2-baz", f.baz);
+  Expect.equals("M2-baz", f.baz);
+
+  e.baz = "M2-baz-e";
+  Expect.throws(() => c.baz, (error) => error is NoSuchMethodError);
+  Expect.equals("M2-baz-d", d.baz);
+  Expect.equals("M2-baz-e", e.baz);
+  Expect.equals("M2-baz", f.baz);
+
+  f.baz = "M2-baz-f";
+  Expect.throws(() => c.baz, (error) => error is NoSuchMethodError);
+  Expect.equals("M2-baz-d", d.baz);
+  Expect.equals("M2-baz-e", e.baz);
+  Expect.equals("M2-baz-f", f.baz);
+
+  Expect.throws(() => c.fez = 0, (error) => error is NoSuchMethodError);
+  Expect.throws(() => d.fez = 0, (error) => error is NoSuchMethodError);
+  Expect.throws(() => e.fez = 0, (error) => error is NoSuchMethodError);
+
+  f.fez = "F-fez-f";
+  Expect.throws(() => c.fez, (error) => error is NoSuchMethodError);
+  Expect.throws(() => d.fez, (error) => error is NoSuchMethodError);
+  Expect.throws(() => e.fez, (error) => error is NoSuchMethodError);
+  Expect.equals("F-fez-f", f.fez);
+}