Check in codegen test expectations.

test/codegen/expect/language/const_test.js

+dart_library.library('language/const_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__const_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const const_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  const_test.AConst = class AConst extends core.Object {
+    new() {
+      this.b_ = 3;
+    }
+  };
+  dart.setSignature(const_test.AConst, {
+    constructors: () => ({new: dart.definiteFunctionType(const_test.AConst, [])})
+  });
+  const_test.BConst = class BConst extends core.Object {
+    new() {
+    }
+    set foo(value) {}
+    get foo() {
+      return 5;
+    }
+    get(ix) {
+      return ix;
+    }
+    set(ix, value) {
+      return value;
+    }
+  };
+  dart.setSignature(const_test.BConst, {
+    constructors: () => ({new: dart.definiteFunctionType(const_test.BConst, [])}),
+    methods: () => ({
+      get: dart.definiteFunctionType(dart.dynamic, [dart.dynamic]),
+      set: dart.definiteFunctionType(dart.dynamic, [dart.dynamic, dart.dynamic])
+    })
+  });
+  let const$;
+  let const$0;
+  let const$1;
+  const_test.testMain = function() {
+    let o = const$ || (const$ = dart.const(new const_test.AConst()));
+    expect$.Expect.equals(3, o.b_);
+    let o$ = const$0 || (const$0 = dart.const(new const_test.BConst()));
+    let x = o$.foo;
+    o$.foo = dart.dsend(x, '+', 1);
+    expect$.Expect.equals(5, x);
+    let o$0 = const$1 || (const$1 = dart.const(new const_test.BConst())), i = 5;
+    let y = o$0.get(i);
+    o$0.set(i, dart.dsend(y, '+', 1));
+    expect$.Expect.equals(5, y);
+  };
+  dart.fn(const_test.testMain, VoidTodynamic());
+  const_test.main = function() {
+    for (let i = 0; i < 20; i++) {
+      const_test.testMain();
+    }
+  };
+  dart.fn(const_test.main, VoidTodynamic());
+  // Exports:
+  exports.const_test = const_test;
+});