Fix for issue 19817

runtime/vm/unit_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/unit_test.h"
 
 #include <stdio.h>
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
@@ skipping 94 matching lines @@
                            url,
                            Builtin::PartSource(Builtin::kIOLibrary,
                                                url_chars));
   }
   return DartUtils::LoadSource(library, url, tag, url_chars);
 }
 
 
 Dart_Handle TestCase::LoadTestScript(const char* script,
                                      Dart_NativeEntryResolver resolver,
-                                     const char* lib_url) {
+                                     const char* lib_url,
+                                     bool finalize_classes) {
   Dart_Handle url = NewString(lib_url);
   Dart_Handle source = NewString(script);
   Dart_Handle result = Dart_SetLibraryTagHandler(LibraryTagHandler);
   EXPECT_VALID(result);
-  EXPECT_VALID(result);
   Dart_Handle lib = Dart_LoadScript(url, source, 0, 0);
   DART_CHECK_VALID(lib);
   result = Dart_SetNativeResolver(lib, resolver, NULL);
   DART_CHECK_VALID(result);
+  if (finalize_classes) {
+    result = Dart_FinalizeLoading(false);
+    DART_CHECK_VALID(result);
+  }
   return lib;
 }
 
 
 Dart_Handle TestCase::LoadCoreTestScript(const char* script,
                                          Dart_NativeEntryResolver resolver) {
   return LoadTestScript(script, resolver, CORELIB_TEST_URI);
 }
 
 
@@ skipping 107 matching lines @@
   Isolate* isolate = Isolate::Current();
   ASSERT(isolate != NULL);
   ASSERT(ClassFinalizer::AllClassesFinalized());
   const Error& error = Error::Handle(Compiler::CompileFunction(isolate,
                                                                function));
   return error.IsNull();
 }
 
 
 }  // namespace dart