Add CdmService to keep track of CDMs

content/common/media/cdm_service_unittest.cc

Index: content/common/media/cdm_service_unittest.cc
diff --git a/content/common/media/cdm_service_unittest.cc b/content/common/media/cdm_service_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d8852a617f38c76737fbd86b7d60070eb6a1679f
--- /dev/null
+++ b/content/common/media/cdm_service_unittest.cc
@@ -0,0 +1,94 @@
+// Copyright 2016 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 <string>
+#include <vector>
+
+#include "base/base_paths.h"
+#include "base/files/file_path.h"
+#include "base/strings/string16.h"
+#include "base/strings/string_split.h"
+#include "base/strings/string_util.h"
+#include "base/strings/utf_string_conversions.h"
+#include "content/public/common/cdm_service.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace content {
+
+const char kTestPath[] = "/aa/bb";
+const char kVersion1[] = "1.1.1.1";
+const char kVersion2[] = "1.1.1.2";
+const char kTestCodecs[] = "webm,mp4";
+const char kCodecDelimiter[] = ",";
+const char kTestInitDataTypes[] = "keyids,cenc,webm";
+const char kInitDataTypeDelimiter[] = ",";
+
+// For simplicity and to make failures easier to diagnose, this test uses
+// std::string instead of base::FilePath and std::vector<base::string16>.
+class CdmServiceTest : public testing::Test {
+ public:
+  CdmServiceTest() {}
+  ~CdmServiceTest() override {}
+
+ protected:
+  void Register(const std::string& cdm_id,
+                const std::string& version,
+                const std::string& module_library_path,
+                const std::string& supported_codecs,
+                const std::string& supported_init_data_types) {
+    std::vector<base::string16> codecs =
+        base::SplitString(base::ASCIIToUTF16(supported_codecs),
+                          base::ASCIIToUTF16(kCodecDelimiter),
+                          base::KEEP_WHITESPACE, base::SPLIT_WANT_ALL);
+    std::vector<base::string16> init_data_types =
+        base::SplitString(base::ASCIIToUTF16(supported_init_data_types),
+                          base::ASCIIToUTF16(kInitDataTypeDelimiter),
+                          base::KEEP_WHITESPACE, base::SPLIT_WANT_ALL);
+    CdmService::GetInstance()->Register(
+        cdm_id, version, base::FilePath::FromUTF8Unsafe(module_library_path),
+        codecs, init_data_types);
+  }
+
+  bool IsRegistered(const std::string& cdm_id, const std::string& version) {
+    for (const auto& cdm : CdmService::GetInstance()->GetAllRegisteredCdms()) {
+      if (cdm.cdm_id == cdm_id && cdm.version == version)
+        return true;
+    }
+    return false;
+  }
+};
+
+// Note that KeySystemService is a singleton, and thus the actions of
+// one test impact other tests. So each test defines a different key system
+// name to avoid conflicts.
+
+TEST_F(CdmServiceTest, Register) {
+  const char kTestKeySystem[] = "test1";
+  Register(kTestKeySystem, kVersion1, kTestPath, kTestCodecs,
+           kTestInitDataTypes);
+  EXPECT_TRUE(IsRegistered(kTestKeySystem, kVersion1));
+}
+
+TEST_F(CdmServiceTest, ReRegister) {
+  const char kTestKeySystem[] = "test5";
+  Register(kTestKeySystem, kVersion1, "/bb/cc", "unknown", "cenc");
+  EXPECT_TRUE(IsRegistered(kTestKeySystem, kVersion1));
+
+  // Now register same key system with different values.
+  Register(kTestKeySystem, kVersion1, kTestPath, kTestCodecs,
+           kTestInitDataTypes);
+  EXPECT_TRUE(IsRegistered(kTestKeySystem, kVersion1));
+}
+
+TEST_F(CdmServiceTest, MultipleVersions) {
+  const char kTestKeySystem[] = "test8";
+  Register(kTestKeySystem, kVersion1, kTestPath, kTestCodecs,
+           kTestInitDataTypes);
+  Register(kTestKeySystem, kVersion2, "/bb/cc", "unknown", "cenc");
+  EXPECT_TRUE(IsRegistered(kTestKeySystem, kVersion1));
+  EXPECT_TRUE(IsRegistered(kTestKeySystem, kVersion2));
+}
+
+}  // namespace content