Fix for bug 1229: Unary operator plus is not allowed ... except for literals.

runtime/vm/scanner_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/assert.h"
 #include "vm/os.h"
 #include "vm/scanner.h"
 #include "vm/token.h"
 #include "vm/unit_test.h"
 
@@ skipping 24 matching lines @@
 }
 
 
 void CheckKind(const Scanner::GrowableTokenStream &token_stream,
                int index,
                Token::Kind kind) {
   if (token_stream[index].kind != kind) {
     OS::PrintErr("Token %d: expected kind %s but got %s\n", index,
         Token::Name(token_stream[index].kind), Token::Name(kind));
   }
+  EXPECT_EQ(kind, token_stream[index].kind);
 }
 
 
 void CheckLiteral(const Scanner::GrowableTokenStream& token_stream,
                  int index,
                  const char* literal) {
   if (token_stream[index].literal == NULL) {
     OS::PrintErr("Token %d: expected literal \"%s\" but got nothing\n",
                  index, literal);
   } else if (strcmp(literal, token_stream[index].literal->ToCString())) {
@@ skipping 183 matching lines @@
   CheckKind(tokens, 1, Token::kASSIGN);
   CheckKind(tokens, 2, Token::kSTRING);
   CheckKind(tokens, 3, Token::kSEMICOLON);
   CheckKind(tokens, 4, Token::kEOS);
   EXPECT_EQ(0, (tokens)[2].literal->Length());
 }
 
 
 void NumberLiteral() {
   const Scanner::GrowableTokenStream& tokens =
-      Scan("5 0x5d 0.3 0.33 1E+12 .42");
+      Scan("5 0x5d 0.3 0.33 1E+12 .42 +5");
 
   CheckKind(tokens, 0, Token::kINTEGER);
   CheckKind(tokens, 1, Token::kINTEGER);
   CheckKind(tokens, 2, Token::kDOUBLE);
   CheckKind(tokens, 3, Token::kDOUBLE);
   CheckKind(tokens, 4, Token::kDOUBLE);
   CheckKind(tokens, 5, Token::kDOUBLE);
-  CheckKind(tokens, 6, Token::kEOS);
+  CheckKind(tokens, 6, Token::kTIGHTADD);
+  CheckKind(tokens, 7, Token::kINTEGER);
+  CheckKind(tokens, 8, Token::kEOS);
 }
 
 
 void ScanLargeText() {
   const char* dart_source =
       "// This source is not meant to be valid Dart code. The text is used to"
       "// test the Dart scanner."
       ""
       "// Cartesian point implemetation."
       "class Point {"
@@ skipping 91 matching lines @@
   RawString();
   MultilineString();
   EmptyString();
   EmptyMultilineString();
   NumberLiteral();
   InvalidText();
   FindLineTest();
 }
 
 }  // namespace dart