Check in codegen test expectations.

test/codegen/expect/language/syncstar_less_than_test.js

+dart_library.library('language/syncstar_less_than_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__syncstar_less_than_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 syncstar_less_than_test = Object.create(null);
+  let IterableOfint = () => (IterableOfint = dart.constFn(core.Iterable$(core.int)))();
+  let JSArrayOfint = () => (JSArrayOfint = dart.constFn(_interceptors.JSArray$(core.int)))();
+  let dynamicTodynamic = () => (dynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic])))();
+  let VoidToIterableOfint = () => (VoidToIterableOfint = dart.constFn(dart.definiteFunctionType(IterableOfint(), [])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  syncstar_less_than_test.confuse = function(x) {
+    return [1, 'x', true, null, x][dartx.last];
+  };
+  dart.fn(syncstar_less_than_test.confuse, dynamicTodynamic());
+  syncstar_less_than_test.foo = function() {
+    return dart.syncStar(function*() {
+      let a = syncstar_less_than_test.confuse(1);
+      if (dart.test(dart.dsend(a, '<', 10))) {
+        yield 2;
+      }
+    }, core.int);
+  };
+  dart.fn(syncstar_less_than_test.foo, VoidToIterableOfint());
+  syncstar_less_than_test.main = function() {
+    expect$.Expect.listEquals(syncstar_less_than_test.foo()[dartx.toList](), JSArrayOfint().of([2]));
+  };
+  dart.fn(syncstar_less_than_test.main, VoidTodynamic());
+  // Exports:
+  exports.syncstar_less_than_test = syncstar_less_than_test;
+});