Check in codegen test expectations.

test/codegen/expect/lib/html/mirrors_js_typed_interop_test.js

Index: test/codegen/expect/lib/html/mirrors_js_typed_interop_test.js
diff --git a/test/codegen/expect/lib/html/mirrors_js_typed_interop_test.js b/test/codegen/expect/lib/html/mirrors_js_typed_interop_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..9557f4ee5dcf8531ade19909a5c0714aae350a5e
--- /dev/null
+++ b/test/codegen/expect/lib/html/mirrors_js_typed_interop_test.js
@@ -0,0 +1,41 @@
+dart_library.library('lib/html/mirrors_js_typed_interop_test', null, /* Imports */[
+  'dart_sdk',
+  'unittest'
+], function load__mirrors_js_typed_interop_test(exports, dart_sdk, unittest) {
+  'use strict';
+  const core = dart_sdk.core;
+  const html = dart_sdk.html;
+  const mirrors = dart_sdk.mirrors;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const html_config = unittest.html_config;
+  const unittest$ = unittest.unittest;
+  const src__matcher__expect = unittest.src__matcher__expect;
+  const src__matcher__throws_matcher = unittest.src__matcher__throws_matcher;
+  const mirrors_js_typed_interop_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  let VoidToInstanceMirror = () => (VoidToInstanceMirror = dart.constFn(dart.definiteFunctionType(mirrors.InstanceMirror, [])))();
+  mirrors_js_typed_interop_test._injectJs = function() {
+    html.document[dartx.body][dartx.append]((() => {
+      let _ = html.ScriptElement.new();
+      _[dartx.type] = 'text/javascript';
+      _[dartx.innerHtml] = "  window.foo = {\n    x: 3,\n    z: 100,\n    multiplyBy2: function(arg) { return arg * 2; },\n  };\n";
+      return _;
+    })());
+  };
+  dart.fn(mirrors_js_typed_interop_test._injectJs, VoidTodynamic());
+  let const$;
+  mirrors_js_typed_interop_test.main = function() {
+    mirrors_js_typed_interop_test._injectJs();
+    html_config.useHtmlConfiguration();
+    unittest$.test('dynamic dispatch', dart.fn(() => {
+      let f = dart.global.foo;
+      src__matcher__expect.expect(f.x, 3);
+      src__matcher__expect.expect(dart.fn(() => mirrors.reflect(f).setField(const$ || (const$ = dart.const(core.Symbol.new('x'))), 123), VoidToInstanceMirror()), src__matcher__throws_matcher.throws);
+      src__matcher__expect.expect(f.x, 3);
+    }, VoidTodynamic()));
+  };
+  dart.fn(mirrors_js_typed_interop_test.main, VoidTodynamic());
+  // Exports:
+  exports.mirrors_js_typed_interop_test = mirrors_js_typed_interop_test;
+});