Check in codegen test expectations.

test/codegen/expect/lib/html/hidden_dom_1_test.js

Index: test/codegen/expect/lib/html/hidden_dom_1_test.js
diff --git a/test/codegen/expect/lib/html/hidden_dom_1_test.js b/test/codegen/expect/lib/html/hidden_dom_1_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..992e134bcc2d486fd0839b1bfef92e218e0ee108
--- /dev/null
+++ b/test/codegen/expect/lib/html/hidden_dom_1_test.js
@@ -0,0 +1,59 @@
+dart_library.library('lib/html/hidden_dom_1_test', null, /* Imports */[
+  'dart_sdk',
+  'unittest'
+], function load__hidden_dom_1_test(exports, dart_sdk, unittest) {
+  'use strict';
+  const core = dart_sdk.core;
+  const html = dart_sdk.html;
+  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__core_matchers = unittest.src__matcher__core_matchers;
+  const src__matcher__error_matchers = unittest.src__matcher__error_matchers;
+  const hidden_dom_1_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.functionType(dart.dynamic, [])))();
+  let VoidTodynamic$ = () => (VoidTodynamic$ = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  let dynamicTodynamic = () => (dynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic])))();
+  let FnTodynamic = () => (FnTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [VoidTodynamic()])))();
+  hidden_dom_1_test.main = function() {
+    html_config.useHtmlConfiguration();
+    unittest$.test('test1', dart.fn(() => {
+      html.document[dartx.body][dartx.children][dartx.add](html.Element.html('<div id=\'div1\'>\nHello World!\n</div>'));
+      let e = html.document[dartx.query]('#div1');
+      src__matcher__expect.expect(e, src__matcher__core_matchers.isNotNull);
+      hidden_dom_1_test.checkNoSuchMethod(dart.fn(() => {
+        dart.dput(hidden_dom_1_test.confuse(e), 'onfocus', null);
+      }, VoidTodynamic$()));
+    }, VoidTodynamic$()));
+  };
+  dart.fn(hidden_dom_1_test.main, VoidTodynamic$());
+  hidden_dom_1_test.Decoy = class Decoy extends core.Object {
+    set onfocus(x) {
+      dart.throw('dead code');
+    }
+  };
+  hidden_dom_1_test.confuse = function(x) {
+    return dart.test(hidden_dom_1_test.opaqueTrue()) ? x : dart.test(hidden_dom_1_test.opaqueTrue()) ? new core.Object() : new hidden_dom_1_test.Decoy();
+  };
+  dart.fn(hidden_dom_1_test.confuse, dynamicTodynamic());
+  hidden_dom_1_test.opaqueTrue = function() {
+    return true;
+  };
+  dart.fn(hidden_dom_1_test.opaqueTrue, VoidTodynamic$());
+  hidden_dom_1_test.checkNoSuchMethod = function(action) {
+    let ex = null;
+    try {
+      action();
+    } catch (e) {
+      ex = e;
+    }
+
+    if (ex == null) src__matcher__expect.expect(false, src__matcher__core_matchers.isTrue, {reason: 'Action should have thrown exception'});
+    src__matcher__expect.expect(ex, src__matcher__error_matchers.isNoSuchMethodError);
+  };
+  dart.fn(hidden_dom_1_test.checkNoSuchMethod, FnTodynamic());
+  // Exports:
+  exports.hidden_dom_1_test = hidden_dom_1_test;
+});