Cleanup mock device management backend

Add actions for mock device management backend for request success and failure.

BUG=62482
TEST=DeviceManagementPolicyProviderTest*:DeviceTokenFetcherTest*

Review URL: http://codereview.chromium.org/5338004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@67255 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 91 insertions, 241 deletions

diff --git a/chrome/browser/policy/device_management_policy_provider_unittest.cc b/chrome/browser/policy/device_management_policy_provider_unittest.cc
index 705b228..1761e80 100644
--- a/chrome/browser/policy/device_management_policy_provider_unittest.cc
+++ b/chrome/browser/policy/device_management_policy_provider_unittest.cc
@@ -21,6 +21,7 @@ const char kTestToken[] = "device_policy_provider_test_auth_token";
 namespace policy {
 
 using ::testing::_;
+using ::testing::InSequence;
 using ::testing::Mock;
 
 class DeviceManagementPolicyProviderTest : public testing::Test {
@@ -39,7 +40,6 @@ class DeviceManagementPolicyProviderTest : public testing::Test {
 
   void CreateNewBackend() {
     backend_ = new MockDeviceManagementBackend;
-    backend_->AddBooleanPolicy(key::kDisableSpdy, true);
   }
 
   void CreateNewProvider() {
@@ -61,9 +61,11 @@ class DeviceManagementPolicyProviderTest : public testing::Test {
 
   void SimulateSuccessfulInitialPolicyFetch() {
     MockConfigurationPolicyStore store;
-    backend_->AllShouldSucceed();
-    EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).Times(1);
-    EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).Times(1);
+    EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).WillOnce(
+        MockDeviceManagementBackendSucceedRegister());
+    EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).WillOnce(
+        MockDeviceManagementBackendSucceedBooleanPolicy(
+            key::kDisableSpdy, true));
     SimulateSuccessfulLoginAndRunPending();
     EXPECT_CALL(store, Apply(kPolicyDisableSpdy, _)).Times(1);
     provider_->Provide(&store);
@@ -105,7 +107,6 @@ class DeviceManagementPolicyProviderTest : public testing::Test {
 // provide an empty policy.
 TEST_F(DeviceManagementPolicyProviderTest, InitialProvideNoLogin) {
   MockConfigurationPolicyStore store;
-  backend_->AllShouldSucceed();
   EXPECT_CALL(store, Apply(_, _)).Times(0);
   provider_->Provide(&store);
   EXPECT_TRUE(store.policy_map().empty());
@@ -118,12 +119,13 @@ TEST_F(DeviceManagementPolicyProviderTest, InitialProvideWithLogin) {
   SimulateSuccessfulInitialPolicyFetch();
 }
 
-// If the login succeeds but the device management backend is unreachable,
+// If the login succeed but the device management backend is unreachable,
 // there should be no policy provided if there's no previously-fetched policy,
 TEST_F(DeviceManagementPolicyProviderTest, EmptyProvideWithFailedBackend) {
   MockConfigurationPolicyStore store;
-  backend_->AllShouldFail();
-  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).Times(1);
+  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendFailRegister(
+          DeviceManagementBackend::kErrorRequestFailed));
   EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).Times(0);
   SimulateSuccessfulLoginAndRunPending();
   EXPECT_CALL(store, Apply(kPolicyDisableSpdy, _)).Times(0);
@@ -140,16 +142,19 @@ TEST_F(DeviceManagementPolicyProviderTest, SecondProvide) {
   // Simulate a app relaunch by constructing a new provider. Policy should be
   // refreshed (since that might be the purpose of the app relaunch).
   CreateNewBackend();
-  EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).Times(1);
+  EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendSucceedBooleanPolicy(
+          key::kDisableSpdy, true));
   CreateNewProvider();
   Mock::VerifyAndClearExpectations(backend_);
 
   // Simulate another app relaunch, this time against a failing backend.
   // Cached policy should still be available.
   CreateNewBackend();
-  backend_->AllShouldFail();
   MockConfigurationPolicyStore store;
-  EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).Times(1);
+  EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendFailPolicy(
+          DeviceManagementBackend::kErrorRequestFailed));
   CreateNewProvider();
   SimulateSuccessfulLoginAndRunPending();
   EXPECT_CALL(store, Apply(kPolicyDisableSpdy, _)).Times(1);
@@ -170,18 +175,38 @@ TEST_F(DeviceManagementPolicyProviderTest, FetchTriggersRefresh) {
 }
 
 TEST_F(DeviceManagementPolicyProviderTest, ErrorCausesNewRequest) {
-  backend_->RegisterFailsOncePolicyFailsTwice();
+  InSequence s;
   SetRefreshDelays(provider_.get(), 1000 * 1000, 0, 0, 0);
-  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).Times(2);
-  EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).Times(3);
+  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendFailRegister(
+          DeviceManagementBackend::kErrorRequestFailed));
+  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendSucceedRegister());
+  EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendFailPolicy(
+          DeviceManagementBackend::kErrorRequestFailed));
+  EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendFailPolicy(
+          DeviceManagementBackend::kErrorRequestFailed));
+  EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendSucceedBooleanPolicy(key::kDisableSpdy, true));
   SimulateSuccessfulLoginAndRunPending();
 }
 
 TEST_F(DeviceManagementPolicyProviderTest, RefreshPolicies) {
-  backend_->AllWorksFirstPolicyFailsLater();
+  InSequence s;
   SetRefreshDelays(provider_.get(), 0, 0, 1000 * 1000, 1000);
-  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).Times(1);
-  EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).Times(4);
+  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendSucceedRegister());
+  EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendSucceedBooleanPolicy(key::kDisableSpdy, true));
+  EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendSucceedBooleanPolicy(key::kDisableSpdy, true));
+  EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendSucceedBooleanPolicy(key::kDisableSpdy, true));
+  EXPECT_CALL(*backend_, ProcessPolicyRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendFailPolicy(
+          DeviceManagementBackend::kErrorRequestFailed));
   SimulateSuccessfulLoginAndRunPending();
 }
 
diff --git a/chrome/browser/policy/device_token_fetcher_unittest.cc b/chrome/browser/policy/device_token_fetcher_unittest.cc
index 393195c..7e2a00e 100644
--- a/chrome/browser/policy/device_token_fetcher_unittest.cc
+++ b/chrome/browser/policy/device_token_fetcher_unittest.cc
@@ -90,15 +90,15 @@ class DeviceTokenFetcherTest : public testing::Test {
 
 TEST_F(DeviceTokenFetcherTest, IsPending) {
   ASSERT_TRUE(fetcher_->IsTokenPending());
-  backend_->AllShouldSucceed();
-  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).Times(1);
+  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendSucceedRegister());
   SimulateSuccessfulLoginAndRunPending();
   ASSERT_FALSE(fetcher_->IsTokenPending());
 }
 
 TEST_F(DeviceTokenFetcherTest, StoreAndLoad) {
-  backend_->AllShouldSucceed();
-  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).Times(1);
+  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendSucceedRegister());
   SimulateSuccessfulLoginAndRunPending();
   ASSERT_FALSE(fetcher_->IsTokenPending());
   std::string device_token = fetcher_->GetDeviceToken();
@@ -116,8 +116,8 @@ TEST_F(DeviceTokenFetcherTest, StoreAndLoad) {
 }
 
 TEST_F(DeviceTokenFetcherTest, SimpleFetchSingleLogin) {
-  backend_->AllShouldSucceed();
-  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).Times(1);
+  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendSucceedRegister());
   SimulateSuccessfulLoginAndRunPending();
   ASSERT_FALSE(fetcher_->IsTokenPending());
   ASSERT_TRUE(fetcher_->IsTokenValid());
@@ -126,8 +126,8 @@ TEST_F(DeviceTokenFetcherTest, SimpleFetchSingleLogin) {
 }
 
 TEST_F(DeviceTokenFetcherTest, SimpleFetchDoubleLogin) {
-  backend_->AllShouldSucceed();
-  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).Times(1);
+  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendSucceedRegister());
   SimulateSuccessfulLoginAndRunPending();
   ASSERT_FALSE(fetcher_->IsTokenPending());
   const std::string token(fetcher_->GetDeviceToken());
@@ -147,8 +147,8 @@ TEST_F(DeviceTokenFetcherTest, FetchBetweenBrowserLaunchAndNotify) {
   registrar.AddObserver(&observer);
   EXPECT_CALL(observer, OnTokenSuccess()).Times(1);
   EXPECT_CALL(observer, OnTokenError()).Times(0);
-  backend_->AllShouldSucceed();
-  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).Times(1);
+  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendSucceedRegister());
   SimulateSuccessfulLoginAndRunPending();
   ASSERT_FALSE(fetcher_->IsTokenPending());
   const std::string token(fetcher_->GetDeviceToken());
@@ -176,8 +176,9 @@ TEST_F(DeviceTokenFetcherTest, FailedServerRequest) {
   registrar.AddObserver(&observer);
   EXPECT_CALL(observer, OnTokenSuccess()).Times(0);
   EXPECT_CALL(observer, OnTokenError()).Times(1);
-  backend_->AllShouldFail();
-  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).Times(1);
+  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendFailRegister(
+          DeviceManagementBackend::kErrorRequestFailed));
   SimulateSuccessfulLoginAndRunPending();
   ASSERT_FALSE(fetcher_->IsTokenPending());
   const std::string token(fetcher_->GetDeviceToken());
@@ -189,8 +190,9 @@ TEST_F(DeviceTokenFetcherTest, UnmanagedDevice) {
   GetDeviceTokenPath(fetcher_, &token_path);
   file_util::WriteFile(token_path, "foo", 3);
   ASSERT_TRUE(file_util::PathExists(token_path));
-  backend_->UnmanagedDevice();
-  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).Times(1);
+  EXPECT_CALL(*backend_, ProcessRegisterRequest(_, _, _, _)).WillOnce(
+      MockDeviceManagementBackendFailRegister(
+          DeviceManagementBackend::kErrorServiceManagementNotSupported));
   SimulateSuccessfulLoginAndRunPending();
   ASSERT_FALSE(fetcher_->IsTokenPending());
   ASSERT_EQ("", fetcher_->GetDeviceToken());
diff --git a/chrome/browser/policy/mock_device_management_backend.cc b/chrome/browser/policy/mock_device_management_backend.cc
deleted file mode 100644
index ca61feb..0000000
--- a/chrome/browser/policy/mock_device_management_backend.cc
+++ /dev/null
@@ -1,163 +0,0 @@
-// Copyright (c) 2010 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 "chrome/browser/policy/mock_device_management_backend.h"
-
-#include "base/basictypes.h"
-#include "base/logging.h"
-#include "base/stl_util-inl.h"
-
-namespace {
-
-static const char kFakeDeviceManagementToken[] = "FAKE_DEVICE_TOKEN_";
-static char next_token_suffix_ = '0';
-
-}  // namespace
-
-namespace policy {
-
-using ::testing::_;
-using ::testing::Invoke;
-
-using em::DeviceRegisterRequest;
-using em::DeviceUnregisterRequest;
-using em::DevicePolicyRequest;
-using em::DeviceRegisterResponse;
-using em::DeviceUnregisterResponse;
-using em::DevicePolicyResponse;
-
-MockDeviceManagementBackend::MockDeviceManagementBackend()
-    : DeviceManagementBackend(),
-      policy_remaining_fail_count_(0),
-      register_remaining_fail_count_(0),
-      policy_remaining_success_count_(0) {
-  policy_setting_ = policy_response_.add_setting();
-  policy_setting_->set_policy_key("chrome-policy");
-  policy_setting_->set_watermark("fresh");
-}
-
-MockDeviceManagementBackend::~MockDeviceManagementBackend() {
-}
-
-void MockDeviceManagementBackend::AllShouldSucceed() {
-  ON_CALL(*this, ProcessRegisterRequest(_, _, _, _)).
-      WillByDefault(Invoke(
-          this,
-          &MockDeviceManagementBackend::SimulateSuccessfulRegisterRequest));
-  ON_CALL(*this, ProcessPolicyRequest(_, _, _, _)).
-      WillByDefault(Invoke(
-          this,
-          &MockDeviceManagementBackend::SimulateSuccessfulPolicyRequest));
-}
-
-void MockDeviceManagementBackend::AllShouldFail() {
-  ON_CALL(*this, ProcessRegisterRequest(_, _, _, _)).
-      WillByDefault(Invoke(
-          this,
-          &MockDeviceManagementBackend::SimulateFailedRegisterRequest));
-  ON_CALL(*this, ProcessPolicyRequest(_, _, _, _)).
-      WillByDefault(Invoke(
-          this,
-          &MockDeviceManagementBackend::SimulateFailedPolicyRequest));
-}
-
-void MockDeviceManagementBackend::UnmanagedDevice() {
-  ON_CALL(*this, ProcessRegisterRequest(_, _, _, _)).
-      WillByDefault(Invoke(
-          this,
-          &MockDeviceManagementBackend::SimulateUnmanagedRegisterRequest));
-}
-
-void MockDeviceManagementBackend::RegisterFailsOncePolicyFailsTwice() {
-  register_remaining_fail_count_ = 1;
-  policy_remaining_fail_count_ = 2;
-  AllShouldFail();
-}
-
-void MockDeviceManagementBackend::AllWorksFirstPolicyFailsLater() {
-  policy_remaining_success_count_ = 3;
-  AllShouldSucceed();
-}
-
-void MockDeviceManagementBackend::AddBooleanPolicy(const char* policy_name,
-                                                   bool value) {
-  em::GenericSetting* policy_value = policy_setting_->mutable_policy_value();
-  em::GenericNamedValue* named_value = policy_value->add_named_value();
-  named_value->set_name(policy_name);
-  named_value->mutable_value()->set_value_type(
-      em::GenericValue::VALUE_TYPE_BOOL);
-  named_value->mutable_value()->set_bool_value(value);
-}
-
-void MockDeviceManagementBackend::SimulateSuccessfulRegisterRequest(
-    const std::string& auth_token,
-    const std::string& device_id,
-    const em::DeviceRegisterRequest& request,
-    DeviceRegisterResponseDelegate* delegate) {
-  DeviceRegisterResponse response;
-  std::string token(kFakeDeviceManagementToken);
-  token += next_token_suffix_++;
-  response.set_device_management_token(token);
-  delegate->HandleRegisterResponse(response);
-}
-
-void MockDeviceManagementBackend::SimulateSuccessfulPolicyRequest(
-    const std::string& device_management_token,
-    const std::string& device_id,
-    const em::DevicePolicyRequest& request,
-    DevicePolicyResponseDelegate* delegate) {
-  if (policy_remaining_success_count_) {
-    policy_remaining_success_count_--;
-    if (!policy_remaining_success_count_) {
-      ON_CALL(*this, ProcessPolicyRequest(_, _, _, _)).
-          WillByDefault(Invoke(
-              this,
-              &MockDeviceManagementBackend::SimulateFailedPolicyRequest));
-    }
-  }
-  delegate->HandlePolicyResponse(policy_response_);
-}
-
-void MockDeviceManagementBackend::SimulateFailedRegisterRequest(
-    const std::string& auth_token,
-    const std::string& device_id,
-    const em::DeviceRegisterRequest& request,
-    DeviceRegisterResponseDelegate* delegate) {
-  if (register_remaining_fail_count_) {
-    register_remaining_fail_count_--;
-    if (!register_remaining_fail_count_) {
-      ON_CALL(*this, ProcessRegisterRequest(_, _, _, _)).WillByDefault(Invoke(
-          this,
-          &MockDeviceManagementBackend::SimulateSuccessfulRegisterRequest));
-    }
-  }
-  delegate->OnError(kErrorRequestFailed);
-}
-
-void MockDeviceManagementBackend::SimulateFailedPolicyRequest(
-    const std::string& device_management_token,
-    const std::string& device_id,
-    const em::DevicePolicyRequest& request,
-    DevicePolicyResponseDelegate* delegate) {
-  if (policy_remaining_fail_count_) {
-    policy_remaining_fail_count_--;
-    if (!policy_remaining_fail_count_) {
-      ON_CALL(*this, ProcessPolicyRequest(_, _, _, _)).
-          WillByDefault(Invoke(
-              this,
-              &MockDeviceManagementBackend::SimulateSuccessfulPolicyRequest));
-    }
-  }
-  delegate->OnError(kErrorRequestFailed);
-}
-
-void MockDeviceManagementBackend::SimulateUnmanagedRegisterRequest(
-    const std::string& auth_token,
-    const std::string& device_id,
-    const em::DeviceRegisterRequest& request,
-    DeviceRegisterResponseDelegate* delegate) {
-  delegate->OnError(kErrorServiceManagementNotSupported);
-}
-
-}  // namespace
diff --git a/chrome/browser/policy/mock_device_management_backend.h b/chrome/browser/policy/mock_device_management_backend.h
index 9371dc0..3b0cb33 100644
--- a/chrome/browser/policy/mock_device_management_backend.h
+++ b/chrome/browser/policy/mock_device_management_backend.h
@@ -24,8 +24,8 @@ namespace em = enterprise_management;
 class MockDeviceManagementBackend
     : public DeviceManagementBackend {
  public:
-  MockDeviceManagementBackend();
-  virtual ~MockDeviceManagementBackend();
+  MockDeviceManagementBackend() {}
+  virtual ~MockDeviceManagementBackend() {}
 
   // DeviceManagementBackend method overrides:
   MOCK_METHOD4(ProcessRegisterRequest, void(
@@ -46,55 +46,41 @@ class MockDeviceManagementBackend
       const em::DevicePolicyRequest& request,
       DevicePolicyResponseDelegate* delegate));
 
-  void AllShouldSucceed();
-  void AllShouldFail();
-  void UnmanagedDevice();
-  void RegisterFailsOncePolicyFailsTwice();
-  void AllWorksFirstPolicyFailsLater();
-
-  void SimulateSuccessfulRegisterRequest(
-      const std::string& auth_token,
-      const std::string& device_id,
-      const em::DeviceRegisterRequest& request,
-      DeviceRegisterResponseDelegate* delegate);
-
-  void SimulateSuccessfulPolicyRequest(
-      const std::string& device_management_token,
-      const std::string& device_id,
-      const em::DevicePolicyRequest& request,
-      DevicePolicyResponseDelegate* delegate);
-
-  void SimulateFailedRegisterRequest(
-      const std::string& auth_token,
-      const std::string& device_id,
-      const em::DeviceRegisterRequest& request,
-      DeviceRegisterResponseDelegate* delegate);
-
-  void SimulateFailedPolicyRequest(
-      const std::string& device_management_token,
-      const std::string& device_id,
-      const em::DevicePolicyRequest& request,
-      DevicePolicyResponseDelegate* delegate);
-
-  void SimulateUnmanagedRegisterRequest(
-      const std::string& auth_token,
-      const std::string& device_id,
-      const em::DeviceRegisterRequest& request,
-      DeviceRegisterResponseDelegate* delegate);
-
-  void AddBooleanPolicy(const char* policy_name, bool value);
-
  private:
-  em::DevicePolicyResponse policy_response_;
-  em::DevicePolicySetting* policy_setting_;
-
-  int policy_remaining_fail_count_;
-  int register_remaining_fail_count_;
-  int policy_remaining_success_count_;
-
   DISALLOW_COPY_AND_ASSIGN(MockDeviceManagementBackend);
 };
 
+ACTION(MockDeviceManagementBackendSucceedRegister) {
+  em::DeviceRegisterResponse response;
+  std::string token("FAKE_DEVICE_TOKEN_");
+  static int next_token_suffix;
+  token += next_token_suffix++;
+  response.set_device_management_token(token);
+  arg3->HandleRegisterResponse(response);
+}
+
+ACTION_P2(MockDeviceManagementBackendSucceedBooleanPolicy, name, value) {
+  em::DevicePolicyResponse response;
+  em::DevicePolicySetting* setting = response.add_setting();
+  setting->set_policy_key("chrome-policy");
+  setting->set_watermark("fresh");
+  em::GenericSetting* policy_value = setting->mutable_policy_value();
+  em::GenericNamedValue* named_value = policy_value->add_named_value();
+  named_value->set_name(name);
+  named_value->mutable_value()->set_value_type(
+      em::GenericValue::VALUE_TYPE_BOOL);
+  named_value->mutable_value()->set_bool_value(value);
+  arg3->HandlePolicyResponse(response);
+}
+
+ACTION_P(MockDeviceManagementBackendFailRegister, error) {
+  arg3->OnError(error);
+}
+
+ACTION_P(MockDeviceManagementBackendFailPolicy, error) {
+  arg3->OnError(error);
+}
+
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_MOCK_DEVICE_MANAGEMENT_BACKEND_H_