Check in codegen test expectations.

test/codegen/expect/language/double_int_addition_test.js

Index: test/codegen/expect/language/double_int_addition_test.js
diff --git a/test/codegen/expect/language/double_int_addition_test.js b/test/codegen/expect/language/double_int_addition_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..ad26844c54805b127bfe645ff88fe219982143fb
--- /dev/null
+++ b/test/codegen/expect/language/double_int_addition_test.js
@@ -0,0 +1,27 @@
+dart_library.library('language/double_int_addition_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__double_int_addition_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 double_int_addition_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  let dynamicAnddynamicTodynamic = () => (dynamicAnddynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic, dart.dynamic])))();
+  double_int_addition_test.main = function() {
+    for (let i = 0; i < 20; i++) {
+      double_int_addition_test.addOp(1.1, 2.1);
+    }
+    expect$.Expect.isTrue(typeof double_int_addition_test.addOp(1.1, 2.1) == 'number');
+    expect$.Expect.isTrue(typeof double_int_addition_test.addOp(1, 2) == 'number');
+  };
+  dart.fn(double_int_addition_test.main, VoidTodynamic());
+  double_int_addition_test.addOp = function(a, b) {
+    return dart.dsend(a, '+', b);
+  };
+  dart.fn(double_int_addition_test.addOp, dynamicAnddynamicTodynamic());
+  // Exports:
+  exports.double_int_addition_test = double_int_addition_test;
+});