Generate escape sequence for non-printable ascii characters

runtime/vm/snapshot_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 "platform/globals.h"
 
 #include "include/dart_debugger_api.h"
 #include "platform/assert.h"
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
@@ skipping 842 matching lines @@
   TokenStream::Iterator reconstructed_iterator(
       reconstructed_tokens, 0, TokenStream::Iterator::kAllTokens);
   Token::Kind expected_kind = expected_iterator.CurrentTokenKind();
   Token::Kind reconstructed_kind = reconstructed_iterator.CurrentTokenKind();
   String& expected_literal = String::Handle();
   String& actual_literal = String::Handle();
   while (expected_kind != Token::kEOS && reconstructed_kind != Token::kEOS) {
     EXPECT_EQ(expected_kind, reconstructed_kind);
     expected_literal ^= expected_iterator.CurrentLiteral();
     actual_literal ^= reconstructed_iterator.CurrentLiteral();
-    EXPECT(expected_literal.Equals(actual_literal));
+    EXPECT_STREQ(expected_literal.ToCString(), actual_literal.ToCString());
     expected_iterator.Advance();
     reconstructed_iterator.Advance();
     expected_kind = expected_iterator.CurrentTokenKind();
     reconstructed_kind = reconstructed_iterator.CurrentTokenKind();
   }
 }
 
 
 TEST_CASE(SerializeScript) {
   const char* kScriptChars =
@@ skipping 27 matching lines @@
       "abc\n"
       "${def}\n"
       "ghi''';\n"
       "  }\n"
       "  static ms5() {\n"
       "    return '''\n"
       "a b c\n"
       "d ${d} e\n"
       "g h i''';\n"
       "  }\n"
+      "  static ms6() {\n"
+      "    return '\\t \\n \\x00 \\xFF';\n"
+      "  }\n"
       "}\n";
 
   String& url = String::Handle(String::New("dart-test:SerializeScript"));
   String& source = String::Handle(String::New(kScriptChars));
   Script& script = Script::Handle(Script::New(url,
                                               source,
                                               RawScript::kScriptTag));
   const String& lib_url = String::Handle(Symbols::New("TestLib"));
   Library& lib = Library::Handle(Library::New(lib_url));
   lib.Register();
@@ skipping 1791 matching lines @@
   EXPECT(Dart_ErrorHasException(result));
   EXPECT_SUBSTRING("Exception: nulltruefalse123456æøå3.14[]100123456789\n",
                    Dart_GetError(result));
 
   Dart_ExitScope();
 }
 
 #endif  // !defined(TARGET_ARCH_ARM64)
 
 }  // namespace dart