Check in codegen test expectations.

test/codegen/expect/language/const_locals_test.js

Index: test/codegen/expect/language/const_locals_test.js
diff --git a/test/codegen/expect/language/const_locals_test.js b/test/codegen/expect/language/const_locals_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..d89beb02b94510b5f862920a43ccf85fce311c6f
--- /dev/null
+++ b/test/codegen/expect/language/const_locals_test.js
@@ -0,0 +1,43 @@
+dart_library.library('language/const_locals_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__const_locals_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_locals_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  const_locals_test.N = 8;
+  const_locals_test.ConstFoo = class ConstFoo extends core.Object {
+    new(x) {
+      this.x = x;
+    }
+  };
+  dart.setSignature(const_locals_test.ConstFoo, {
+    constructors: () => ({new: dart.definiteFunctionType(const_locals_test.ConstFoo, [dart.dynamic])})
+  });
+  let const$;
+  let const$0;
+  let const$1;
+  const_locals_test.main = function() {
+    let MIN = 2 - 1;
+    let MAX = const_locals_test.N * 2;
+    let MASK = (1)[dartx['<<']](MAX - MIN + 1) - 1;
+    expect$.Expect.equals(1, MIN);
+    expect$.Expect.equals(16, MAX);
+    expect$.Expect.equals(65535, MASK);
+    let s = dart.str`MIN = ${MIN}  MAX = ${MAX}  MASK = ${MASK}`;
+    expect$.Expect.identical(s, dart.str`MIN = ${MIN}  MAX = ${MAX}  MASK = ${MASK}`);
+    expect$.Expect.equals("MIN = 1  MAX = 16  MASK = 65535", s);
+    let cf1 = const$ || (const$ = dart.const(new const_locals_test.ConstFoo(MASK)));
+    let cf2 = const$0 || (const$0 = dart.const(new const_locals_test.ConstFoo(s)));
+    let cf3 = const$1 || (const$1 = dart.const(new const_locals_test.ConstFoo(dart.str`MIN = ${MIN}  MAX = ${MAX}  MASK = ${MASK}`)));
+    expect$.Expect.identical(cf2, cf3);
+    expect$.Expect.isFalse(core.identical(cf2, cf1));
+  };
+  dart.fn(const_locals_test.main, VoidTodynamic());
+  // Exports:
+  exports.const_locals_test = const_locals_test;
+});