Check in codegen test expectations.

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

Index: test/codegen/expect/lib/html/domparser_test.js
diff --git a/test/codegen/expect/lib/html/domparser_test.js b/test/codegen/expect/lib/html/domparser_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..98e480ac05abc9cf0f3e8ee7ce7d21c0dc88b23b
--- /dev/null
+++ b/test/codegen/expect/lib/html/domparser_test.js
@@ -0,0 +1,29 @@
+dart_library.library('lib/html/domparser_test', null, /* Imports */[
+  'dart_sdk',
+  'unittest'
+], function load__domparser_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 src__matcher__core_matchers = unittest.src__matcher__core_matchers;
+  const unittest$ = unittest.unittest;
+  const src__matcher__expect = unittest.src__matcher__expect;
+  const domparser_test = Object.create(null);
+  let dynamicTobool = () => (dynamicTobool = dart.constFn(dart.definiteFunctionType(core.bool, [dart.dynamic])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  domparser_test.main = function() {
+    html_config.useHtmlConfiguration();
+    let isDomParser = src__matcher__core_matchers.predicate(dart.fn(x => html.DomParser.is(x), dynamicTobool()), 'is a DomParser');
+    unittest$.test('constructorTest', dart.fn(() => {
+      let ctx = html.DomParser.new();
+      src__matcher__expect.expect(ctx, src__matcher__core_matchers.isNotNull);
+      src__matcher__expect.expect(ctx, isDomParser);
+    }, VoidTodynamic()));
+  };
+  dart.fn(domparser_test.main, VoidTodynamic());
+  // Exports:
+  exports.domparser_test = domparser_test;
+});