Check in codegen test expectations.

test/codegen/expect/language/exception_identity_test.js

Index: test/codegen/expect/language/exception_identity_test.js
diff --git a/test/codegen/expect/language/exception_identity_test.js b/test/codegen/expect/language/exception_identity_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..9361050a452c3627c32b9e4da7c4f39f837679d8
--- /dev/null
+++ b/test/codegen/expect/language/exception_identity_test.js
@@ -0,0 +1,38 @@
+dart_library.library('language/exception_identity_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__exception_identity_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 exception_identity_test = Object.create(null);
+  let dynamicTodynamic = () => (dynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  exception_identity_test.A = class A extends core.Object {
+    new() {
+    }
+  };
+  dart.setSignature(exception_identity_test.A, {
+    constructors: () => ({new: dart.definiteFunctionType(exception_identity_test.A, [])})
+  });
+  exception_identity_test.check = function(exception) {
+    try {
+      dart.throw(exception);
+    } catch (e) {
+      expect$.Expect.equals(exception, e);
+    }
+
+  };
+  dart.fn(exception_identity_test.check, dynamicTodynamic());
+  exception_identity_test.main = function() {
+    exception_identity_test.check("str");
+    exception_identity_test.check(new exception_identity_test.A());
+    exception_identity_test.check(1);
+    exception_identity_test.check(1.2);
+  };
+  dart.fn(exception_identity_test.main, VoidTodynamic());
+  // Exports:
+  exports.exception_identity_test = exception_identity_test;
+});