Check in codegen test expectations.

test/codegen/expect/language/context_test.js

Index: test/codegen/expect/language/context_test.js
diff --git a/test/codegen/expect/language/context_test.js b/test/codegen/expect/language/context_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..e52d14c8d220d4c1d0f3df185530600b0c4996bc
--- /dev/null
+++ b/test/codegen/expect/language/context_test.js
@@ -0,0 +1,39 @@
+dart_library.library('language/context_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__context_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 context_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  context_test.ContextTest = class ContextTest extends core.Object {
+    static foo(f) {
+      return dart.dcall(f);
+    }
+    static testMain() {
+      let x = 42;
+      function bar() {
+        return x;
+      }
+      dart.fn(bar, VoidTodynamic());
+      x++;
+      expect$.Expect.equals(43, context_test.ContextTest.foo(bar));
+    }
+  };
+  dart.setSignature(context_test.ContextTest, {
+    statics: () => ({
+      foo: dart.definiteFunctionType(dart.dynamic, [core.Function]),
+      testMain: dart.definiteFunctionType(dart.void, [])
+    }),
+    names: ['foo', 'testMain']
+  });
+  context_test.main = function() {
+    context_test.ContextTest.testMain();
+  };
+  dart.fn(context_test.main, VoidTodynamic());
+  // Exports:
+  exports.context_test = context_test;
+});