Check in codegen test expectations.

test/codegen/expect/corelib/list_literal_test.js

Index: test/codegen/expect/corelib/list_literal_test.js
diff --git a/test/codegen/expect/corelib/list_literal_test.js b/test/codegen/expect/corelib/list_literal_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..03238091d7dd22fa46016e1c24b3763968c88434
--- /dev/null
+++ b/test/codegen/expect/corelib/list_literal_test.js
@@ -0,0 +1,36 @@
+dart_library.library('corelib/list_literal_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__list_literal_test(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 list_literal_test = Object.create(null);
+  let JSArrayOfint = () => (JSArrayOfint = dart.constFn(_interceptors.JSArray$(core.int)))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  list_literal_test.ListLiteralTest = class ListLiteralTest extends core.Object {
+    static testMain() {
+      let list = JSArrayOfint().of([1, 2, 3]);
+      expect$.Expect.equals(3, list[dartx.length]);
+      list[dartx.add](4);
+      expect$.Expect.equals(4, list[dartx.length]);
+      list[dartx.addAll](JSArrayOfint().of([5, 6]));
+      expect$.Expect.equals(6, list[dartx.length]);
+      list[dartx.set](0, 0);
+      expect$.Expect.equals(0, list[dartx.get](0));
+    }
+  };
+  dart.setSignature(list_literal_test.ListLiteralTest, {
+    statics: () => ({testMain: dart.definiteFunctionType(dart.void, [])}),
+    names: ['testMain']
+  });
+  list_literal_test.main = function() {
+    list_literal_test.ListLiteralTest.testMain();
+  };
+  dart.fn(list_literal_test.main, VoidTodynamic());
+  // Exports:
+  exports.list_literal_test = list_literal_test;
+});