Check in codegen test expectations.

test/codegen/expect/language/var_init_test.js

Index: test/codegen/expect/language/var_init_test.js
diff --git a/test/codegen/expect/language/var_init_test.js b/test/codegen/expect/language/var_init_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..397e7be0815f794f714d42ea4e219fc21df9aec7
--- /dev/null
+++ b/test/codegen/expect/language/var_init_test.js
@@ -0,0 +1,31 @@
+dart_library.library('language/var_init_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__var_init_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 var_init_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  var_init_test.VarInitTest = class VarInitTest extends core.Object {
+    static testMain() {
+      for (let i = 0; i < 10; i++) {
+        let x = null;
+        expect$.Expect.equals(null, x);
+        x = 1;
+      }
+    }
+  };
+  dart.setSignature(var_init_test.VarInitTest, {
+    statics: () => ({testMain: dart.definiteFunctionType(dart.void, [])}),
+    names: ['testMain']
+  });
+  var_init_test.main = function() {
+    var_init_test.VarInitTest.testMain();
+  };
+  dart.fn(var_init_test.main, VoidTodynamic());
+  // Exports:
+  exports.var_init_test = var_init_test;
+});