Check in codegen test expectations.

test/codegen/expect/language/reg_exp2_test.js

Index: test/codegen/expect/language/reg_exp2_test.js
diff --git a/test/codegen/expect/language/reg_exp2_test.js b/test/codegen/expect/language/reg_exp2_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..2171a4d3629850f53f3aee3a8fc75f80f0959a0b
--- /dev/null
+++ b/test/codegen/expect/language/reg_exp2_test.js
@@ -0,0 +1,44 @@
+dart_library.library('language/reg_exp2_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__reg_exp2_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 reg_exp2_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  reg_exp2_test.RegExp2Test = class RegExp2Test extends core.Object {
+    static findImageTag_(text, extensions) {
+      let re = core.RegExp.new(dart.str`src="(http://\\S+\\.(${extensions}))"`);
+      core.print(dart.str`REGEXP findImageTag_ ${extensions} text: \n${text}`);
+      let match = re.firstMatch(text);
+      core.print(dart.str`REGEXP findImageTag_ ${extensions} SUCCESS`);
+      if (match != null) {
+        return match.get(1);
+      } else {
+        return null;
+      }
+    }
+    static testMain() {
+      let text = '<img src="http://cdn.archinect.net/images/514x/c0/c0p3qo202oxp0e6z.jpg" width="514" height="616" border="0" title="" alt=""><em><p>My last entry was in December of 2009. I suppose I never was particularly good about updating this thing, but it seems a bit ridiculous that I couldn\'t be bothered to post once about the many, many things that have gone on since then. My apologies. I guess I could start by saying that the world looks like a very different place than it did back in second year.</p></em>\n\n';
+      let extensions = 'jpg|jpeg|png';
+      let tag = reg_exp2_test.RegExp2Test.findImageTag_(text, extensions);
+      expect$.Expect.isNotNull(tag);
+    }
+  };
+  dart.setSignature(reg_exp2_test.RegExp2Test, {
+    statics: () => ({
+      findImageTag_: dart.definiteFunctionType(core.String, [core.String, core.String]),
+      testMain: dart.definiteFunctionType(dart.dynamic, [])
+    }),
+    names: ['findImageTag_', 'testMain']
+  });
+  reg_exp2_test.main = function() {
+    reg_exp2_test.RegExp2Test.testMain();
+  };
+  dart.fn(reg_exp2_test.main, VoidTodynamic());
+  // Exports:
+  exports.reg_exp2_test = reg_exp2_test;
+});