Avoid adding invalid headers in AddHeaderFromString

net/http/http_util_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <algorithm>
 
 #include "base/strings/string_util.h"
 #include "net/http/http_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 1374 matching lines @@
   std::string allowed = "\t";
   for (char c = '\x20'; c < '\x7F'; ++c) {
     allowed.append(1, c);
   }
   for (int c = 0x80; c <= 0xFF; ++c) {
     allowed.append(1, static_cast<char>(c));
   }
   EXPECT_TRUE(HttpUtil::IsValidHeaderValue(allowed));
 }
 
+TEST(HttpUtilTest, IsToken) {
+  EXPECT_TRUE(HttpUtil::IsToken("valid"));
+  EXPECT_FALSE(HttpUtil::IsToken(""));
+  EXPECT_FALSE(HttpUtil::IsToken(base::StringPiece()));
+  EXPECT_FALSE(HttpUtil::IsToken("hello, world"));
+}
+
 }  // namespace net