All DCP manager tests that enroll/register are tested with all auths.

components/policy/core/common/cloud/mock_signing_service.h

 // Copyright (c) 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.
 
 #ifndef COMPONENTS_POLICY_CORE_COMMON_CLOUD_MOCK_SIGNING_SERVICE_H_
 #define COMPONENTS_POLICY_CORE_COMMON_CLOUD_MOCK_SIGNING_SERVICE_H_
 
 #include "components/policy/core/common/cloud/signing_service.h"
 
 #include "components/policy/proto/device_management_backend.pb.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace policy {
 
 class FakeSigningService : public SigningService {
  public:
   FakeSigningService();
   virtual ~FakeSigningService();
 
-  void SignRegistrationData(
-      const enterprise_management::CertificateBasedDeviceRegistrationData*
-          registration_data,
-      enterprise_management::SignedData* signed_data);
-
   void SignData(const std::string& data, const SigningCallback& callback)
       override;
 
+  // Useful for test setups without having to deal with callbacks.
+  void SignDataSynchronously(const std::string& data,
+      enterprise_management::SignedData* signed_data);
+
+  // Determine whether SignData will appear successful or not.
   void set_success(bool success);
+
  private:
-  void DoSignData(const std::string& data,
-                         enterprise_management::SignedData* signed_data);
-
   bool success_ = true;
 };
 
 class MockSigningService : public FakeSigningService {
  public:
   MockSigningService();
   ~MockSigningService() override;
 
   MOCK_METHOD2(SignRegistrationData,
       void(const enterprise_management::
                CertificateBasedDeviceRegistrationData*,
                enterprise_management::SignedData*));
   MOCK_METHOD2(SignData, void(const std::string&,
                               const SigningCallback&));
 };
 
 }
 
 #endif // COMPONENTS_POLICY_CORE_COMMON_CLOUD_MOCK_SIGNING_SERVICE_H_