Test for constructor order and bindings.

tests/language/src/Constructor5Test.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.
+// Dart test program for constructors and initializers.
+
+// Super initializer and super constructor body are executed in with the same
+// bindings.
+
+String trace = "";
+
+int E(int i) {
+  trace += "$i-";
+  return i;
+}
+
+class A {
+  A([arg1 = 100, arg2 = 200]) : a1 = E(arg1++), a2 = E(arg2++) {
+    // b2 should be initialized between the above initializers and the following
+    // statements.
+    E(arg1);  // 101
+    E(arg2);  // 51
+  }
+  var a1;
+  var a2;
+}
+
+class B extends A {
+  // Initializers in order: b1, super, b2.
+  B(x, y) : b1 = E(x++), super(arg2: 50), b2 = E(y++) {
+    // Implicit super call to A's body happens here.
+    E(x);  // 11
+    E(y);  // 21
+  }
+  var b1;
+  var b2;
+}
+
+class C extends B {
+  C() : super(10, 20);
+}
+
+main() {
+  var c = new C();
+  Expect.equals(100, c.a1);
+  Expect.equals(50, c.a2);
+  Expect.equals(10, c.b1);
+  Expect.equals(20, c.b2);
+
+  Expect.equals("10-100-50-20-101-51-11-21-", trace);
+}