Add MockChallengeResponseKey and additional composite key component test

tests/mock/MockChallengeResponseKey.cpp

@@ -0,0 +1,39 @@
+/*
+ *  Copyright (C) 2018 KeePassXC Team <team@keepassxc.org>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 2 or (at your option)
+ *  version 3 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "MockChallengeResponseKey.h"
+
+MockChallengeResponseKey::MockChallengeResponseKey(const QByteArray& response)
+    : m_response(response)
+{
+}
+
+MockChallengeResponseKey::~MockChallengeResponseKey()
+{
+}
+
+QByteArray MockChallengeResponseKey::rawKey() const
+{
+    return m_response;
+}
+
+bool MockChallengeResponseKey::challenge(const QByteArray& challenge)
+{
+    Q_UNUSED(challenge);
+    return true;
+}
+