Report messages instead of just printing.

runtime/vm/isolate_reload_test.cc

 // Copyright (c) 2016, 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 "include/dart_api.h"
 #include "include/dart_tools_api.h"
 #include "platform/assert.h"
 #include "vm/globals.h"
 #include "vm/isolate.h"
 #include "vm/lockers.h"
@@ skipping 3291 matching lines @@
       "  int y = ......;\n"
       "}\n"
       "Foo value;\n"
       "main() {\n"
       "  return '${value.y == null}';"
       "}\n";
 
   // The reload fails because the initializing expression is parsed at
   // class finalization time.
   lib = TestCase::ReloadTestScript(kReloadScript);
-  EXPECT_ERROR(lib, "......");

[ahe, 2017/07/14 11:45:07]

This relied on having a source snippet. For legacy reasons, the scanner
recognizes "..." as a single token, so that is included in the error message.

However, I think we should restore the source snippets, but we can discuss that
later.

+  EXPECT_ERROR(lib, "...");
 }
 
 
 // When an initializer expression has a syntax error, we detect it at reload
 // time.
 TEST_CASE(IsolateReload_RunNewFieldInitializersSyntaxError2) {
   const char* kScript =
       "class Foo {\n"
       "  Foo() { /* default constructor */ }\n"
       "  int x = 4;\n"
@@ skipping 16 matching lines @@
       "  int y = ......;\n"
       "}\n"
       "Foo value;\n"
       "main() {\n"
       "  return '${value.y == null}';"
       "}\n";
 
   // The reload fails because the initializing expression is parsed at
   // class finalization time.
   lib = TestCase::ReloadTestScript(kReloadScript);
-  EXPECT_ERROR(lib, "......");
+  EXPECT_ERROR(lib, "...");
 }
 
 
 // When an initializer expression has a syntax error, we detect it at reload
 // time.
 TEST_CASE(IsolateReload_RunNewFieldInitializersSyntaxError3) {
   const char* kScript =
       "class Foo {\n"
       "  Foo() { /* default constructor */ }\n"
       "  int x = 4;\n"
@@ skipping 137 matching lines @@
       "}\n";
 
   Dart_Handle result = TestCase::ReloadTestScript(kReloadScript);
   EXPECT_VALID(result);
   EXPECT_STREQ("false", SimpleInvokeStr(lib, "main"));
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart