Check in codegen test expectations.

test/codegen/expect/language/enum_mirror_test.js

+dart_library.library('language/enum_mirror_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__enum_mirror_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const mirrors = dart_sdk.mirrors;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const enum_mirror_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  enum_mirror_test.Foo = class Foo extends core.Object {
+    new(index) {
+      this.index = index;
+    }
+    toString() {
+      return {
+        0: "Foo.BAR",
+        1: "Foo.BAZ"
+      }[this.index];
+    }
+  };
+  enum_mirror_test.Foo.BAR = dart.const(new enum_mirror_test.Foo(0));
+  enum_mirror_test.Foo.BAZ = dart.const(new enum_mirror_test.Foo(1));
+  enum_mirror_test.Foo.values = dart.constList([enum_mirror_test.Foo.BAR, enum_mirror_test.Foo.BAZ], enum_mirror_test.Foo);
+  let const$;
+  enum_mirror_test.main = function() {
+    expect$.Expect.equals('Foo.BAR', enum_mirror_test.Foo.BAR.toString());
+    let name = mirrors.reflect(enum_mirror_test.Foo.BAR).invoke(const$ || (const$ = dart.const(core.Symbol.new('toString'))), []).reflectee;
+    expect$.Expect.equals('Foo.BAR', name);
+  };
+  dart.fn(enum_mirror_test.main, VoidTodynamic());
+  // Exports:
+  exports.enum_mirror_test = enum_mirror_test;
+});