Add a function for parsing RFC 5280's "Certificate".

net/cert/internal/test_helpers.cc

 // Copyright 2015 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 "net/cert/internal/test_helpers.h"
 
+#include "base/base64.h"
 #include "base/base_paths.h"
 #include "base/files/file_util.h"
 #include "base/path_service.h"
 #include "net/cert/pem_tokenizer.h"
 
 namespace net {
 
+namespace der {
+
+void PrintTo(const Input& data, ::std::ostream* os) {
+  std::string b64;
+  base::Base64Encode(
+      base::StringPiece(reinterpret_cast<const char*>(data.UnsafeData()),
+                        data.Length()),
+      &b64);
+
+  *os << "[" << b64 << "]";
+}
+
+bool operator==(const Input& a, const Input& b) {
+  return a.Equals(b);
+}
+
+}  // namespace der
+
 der::Input InputFromString(const std::string* s) {
   return der::Input(reinterpret_cast<const uint8_t*>(s->data()), s->size());
 }
 
 ::testing::AssertionResult ReadTestDataFromPemFile(
     const std::string& file_path_ascii,
     const PemBlockMapping* mappings,
     size_t mappings_length) {
   // Compute the full path, relative to the src/ directory.
   base::FilePath src_root;
@@ skipping 43 matching lines @@
     if (mapping.value) {
       return ::testing::AssertionFailure() << "PEM block missing: "
                                            << mapping.block_name;
     }
   }
 
   return ::testing::AssertionSuccess();
 }
 
 }  // namespace net