Check in codegen test expectations.

test/codegen/expect/language/cast_test_12_multi.js

+dart_library.library('language/cast_test_12_multi', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__cast_test_12_multi(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const _interceptors = dart_sdk._interceptors;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const cast_test_12_multi = Object.create(null);
+  let JSArrayOfint = () => (JSArrayOfint = dart.constFn(_interceptors.JSArray$(core.int)))();
+  let ListOfint = () => (ListOfint = dart.constFn(core.List$(core.int)))();
+  let VoidToObject = () => (VoidToObject = dart.constFn(dart.definiteFunctionType(core.Object, [])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  cast_test_12_multi.C = class C extends core.Object {
+    new() {
+      this.foo = 42;
+    }
+  };
+  cast_test_12_multi.D = class D extends cast_test_12_multi.C {
+    new() {
+      this.bar = 37;
+      super.new();
+    }
+  };
+  cast_test_12_multi.createC = function() {
+    return new cast_test_12_multi.C();
+  };
+  dart.fn(cast_test_12_multi.createC, VoidToObject());
+  cast_test_12_multi.createD = function() {
+    return new cast_test_12_multi.D();
+  };
+  dart.fn(cast_test_12_multi.createD, VoidToObject());
+  cast_test_12_multi.getNull = function() {
+    return null;
+  };
+  dart.fn(cast_test_12_multi.getNull, VoidToObject());
+  cast_test_12_multi.createList = function() {
+    return JSArrayOfint().of([2]);
+  };
+  dart.fn(cast_test_12_multi.createList, VoidToObject());
+  cast_test_12_multi.createInt = function() {
+    return 87;
+  };
+  dart.fn(cast_test_12_multi.createInt, VoidToObject());
+  cast_test_12_multi.createString = function() {
+    return "a string";
+  };
+  dart.fn(cast_test_12_multi.createString, VoidToObject());
+  cast_test_12_multi.main = function() {
+    let oc = cast_test_12_multi.createC();
+    let od = cast_test_12_multi.createD();
+    let on = cast_test_12_multi.getNull();
+    let ol = cast_test_12_multi.createList();
+    let oi = cast_test_12_multi.createInt();
+    let os = cast_test_12_multi.createString();
+    expect$.Expect.equals(42, cast_test_12_multi.C.as(oc).foo);
+    expect$.Expect.equals(42, cast_test_12_multi.C.as(od).foo);
+    expect$.Expect.equals(42, cast_test_12_multi.D.as(od).foo);
+    expect$.Expect.equals(37, cast_test_12_multi.D.as(od).bar);
+    expect$.Expect.equals(37, cast_test_12_multi.D.as(cast_test_12_multi.C.as(od)).bar);
+    dart.toString(cast_test_12_multi.D.as(on));
+    dart.toString(on);
+    dart.toString(oc);
+    dart.toString(od);
+    dart.toString(on);
+    dart.dload(oc, 'foo');
+    dart.dload(od, 'foo');
+    dart.dload(od, 'bar');
+    let c = cast_test_12_multi.C.as(oc);
+    c = cast_test_12_multi.C.as(od);
+    c = cast_test_12_multi.C._check(oc);
+    let d = cast_test_12_multi.D.as(od);
+    d = cast_test_12_multi.D._check(od);
+    core.List.as(ol)[dartx.get](0);
+    ListOfint().as(ol)[dartx.get](0);
+    dart.dindex(ol, 0);
+    core.String.as(ol)[dartx.length];
+    let x = ListOfint().as(ol)[dartx.get](0);
+    ListOfint().as(ol)[dartx.set](0, core.int.as(oi));
+    core.String.as(os)[dartx.length];
+    dart.dload(os, 'length');
+    dart.notNull(core.int.as(oi)) + 2;
+  };
+  dart.fn(cast_test_12_multi.main, VoidTodynamic());
+  // Exports:
+  exports.cast_test_12_multi = cast_test_12_multi;
+});