Fix: Adding list of supported codecs for MP4 containers

base/strings/string_util_unittest.cc

 // Copyright 2013 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 "base/strings/string_util.h"
 
 #include <math.h>
 #include <stdarg.h>
 
 #include <algorithm>
@@ skipping 576 matching lines @@
 
   // Verify the lower case as well.
   EXPECT_EQ(10, HexDigitToInt('a'));
   EXPECT_EQ(11, HexDigitToInt('b'));
   EXPECT_EQ(12, HexDigitToInt('c'));
   EXPECT_EQ(13, HexDigitToInt('d'));
   EXPECT_EQ(14, HexDigitToInt('e'));
   EXPECT_EQ(15, HexDigitToInt('f'));
 }
 
+TEST(StringUtilTest, HigherCaseHexNumber) {
+  EXPECT_TRUE(IsHigherCaseHexNumber("1234567890"));
+  EXPECT_TRUE(IsHigherCaseHexNumber("ABDCEF"));
+  EXPECT_TRUE(IsHigherCaseHexNumber("1A2B3C"));
+
+  EXPECT_FALSE(IsHigherCaseHexNumber(""));
+  EXPECT_FALSE(IsHigherCaseHexNumber("1a2b3c"));
+  EXPECT_FALSE(IsHigherCaseHexNumber("abcdef"));
+  EXPECT_FALSE(IsHigherCaseHexNumber("GHIJKL"));
+  EXPECT_FALSE(IsHigherCaseHexNumber("!@#$^&*|"));
+}
+
 // This checks where we can use the assignment operator for a va_list. We need
 // a way to do this since Visual C doesn't support va_copy, but assignment on
 // va_list is not guaranteed to be a copy. See StringAppendVT which uses this
 // capability.
 static void VariableArgsFunc(const char* format, ...) {
   va_list org;
   va_start(org, format);
 
   va_list dup;
   GG_VA_COPY(dup, org);
@@ skipping 582 matching lines @@
   const std::string live = kLive;
   std::string dead = live;
   strncpy(WriteInto(&dead, 5), kDead, 4);
   EXPECT_EQ(kDead, dead);
   EXPECT_EQ(4u, dead.size());
   EXPECT_EQ(kLive, live);
   EXPECT_EQ(4u, live.size());
 }
 
 }  // namespace base