Move function for classifying a string as a mime type into MimeUtil

net/base/mime_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 "base/basictypes.h"
 #include "net/base/mime_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace net {
 
@@ skipping 108 matching lines @@
   }
 
   // Test without stripping the codec type.
   std::vector<std::string> codecs_out;
   ParseCodecString("avc1.42E01E, mp4a.40.2", &codecs_out, false);
   ASSERT_EQ(2u, codecs_out.size());
   EXPECT_EQ("avc1.42E01E", codecs_out[0]);
   EXPECT_EQ("mp4a.40.2", codecs_out[1]);
 }
 
+TEST(MimeUtilTest, TestIsStringMimeType) {
+  std::string nonAscii("application/nonutf8");
+  EXPECT_TRUE(IsStringMimeType(nonAscii));
+  nonAscii.append("\u2603");  // unicode snowman
+  EXPECT_FALSE(IsStringMimeType(nonAscii));
+
+  EXPECT_TRUE(IsStringMimeType("application/mime"));
+  EXPECT_TRUE(IsStringMimeType("audio/mime"));
+  EXPECT_TRUE(IsStringMimeType("example/mime"));
+  EXPECT_TRUE(IsStringMimeType("image/mime"));
+  EXPECT_TRUE(IsStringMimeType("message/mime"));
+  EXPECT_TRUE(IsStringMimeType("model/mime"));
+  EXPECT_TRUE(IsStringMimeType("multipart/mime"));
+  EXPECT_TRUE(IsStringMimeType("text/mime"));
+  EXPECT_TRUE(IsStringMimeType("video/mime"));
+  EXPECT_TRUE(IsStringMimeType("video/mime;parameter"));
+  EXPECT_TRUE(IsStringMimeType("*/*"));
+  EXPECT_TRUE(IsStringMimeType("*"));
+
+  EXPECT_TRUE(IsStringMimeType("x-video/mime"));
+  EXPECT_FALSE(IsStringMimeType("x-/mime"));
+  EXPECT_FALSE(IsStringMimeType("mime/looking"));
+}
+
 }  // namespace net