Migrate block 44.

tests/language_strong/bound_closure_equality_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.
-
-import "package:expect/expect.dart";
-
-class A {
-  const A();
-  foo() => 42;
-}
-
-class B {
-  foo() => 42;
-}
-
-main() {
-  // Use an array to defeat type inferencing.
-  var array = [new A(), new A(), new B(), new B()];
-  var set = new Set.from(array.map((a) => a.foo));
-  Expect.equals(array.length, set.length);
-  set.addAll(array.map((a) => a.foo));
-  Expect.equals(array.length, set.length);
-
-  for (int i = 0; i < array.length; i += 2) {
-    Expect.isTrue(set.contains(array[i].foo));
-    Expect.equals(array[i], array[i]);
-    Expect.equals(array[i].foo, array[i].foo);
-    Expect.equals(array[i].foo.hashCode, array[i].foo.hashCode);
-    for (int j = 0; j < array.length; j++) {
-      if (i == j) continue;
-      Expect.notEquals(array[i].foo, array[j].foo);
-    }
-  }
-
-  // Try with dart2js intercepted types.
-  array = ['foo', 'bar', [], [], const []];
-  set = new Set.from(array.map((a) => a.indexOf));
-  Expect.equals(array.length, set.length);
-  set.addAll(array.map((a) => a.indexOf));
-  Expect.equals(array.length, set.length);
-
-  for (int i = 0; i < array.length; i += 2) {
-    Expect.isTrue(set.contains(array[i].indexOf));
-    Expect.equals(array[i], array[i]);
-    Expect.equals(array[i].indexOf, array[i].indexOf);
-    Expect.equals(array[i].indexOf.hashCode, array[i].indexOf.hashCode);
-    for (int j = 0; j < array.length; j++) {
-      if (i == j) continue;
-      Expect.notEquals(array[i].indexOf, array[j].indexOf);
-    }
-  }
-
-  array = [const A(), const A()];
-  set = new Set.from(array.map((a) => a.foo));
-  Expect.equals(1, set.length);
-  set.addAll(array.map((a) => a.foo));
-  Expect.equals(1, set.length);
-
-  Expect.isTrue(set.contains(array[0].foo));
-  Expect.equals(array[0].foo, array[0].foo);
-  Expect.equals(array[0].foo.hashCode, array[0].foo.hashCode);
-  Expect.equals(array[0].foo, array[1].foo);
-  Expect.equals(array[0].foo.hashCode, array[1].foo.hashCode);
-
-  array = [const [], const []];
-  set = new Set.from(array.map((a) => a.indexOf));
-  Expect.equals(1, set.length);
-  set.addAll(array.map((a) => a.indexOf));
-  Expect.equals(1, set.length);
-
-  Expect.isTrue(set.contains(array[0].indexOf));
-  Expect.equals(array[0].indexOf, array[0].indexOf);
-  Expect.equals(array[0].indexOf.hashCode, array[0].indexOf.hashCode);
-  Expect.equals(array[0].indexOf, array[1].indexOf);
-  Expect.equals(array[0].indexOf.hashCode, array[1].indexOf.hashCode);
-}