tests: refactor common test infrastructure and fixtures
Change-Id: I597c11130eefa2cc2846ee6655c85dc04f2f22ef
diff --git a/tests/key-chain-fixture.hpp b/tests/key-chain-fixture.hpp
new file mode 100644
index 0000000..7ed405b
--- /dev/null
+++ b/tests/key-chain-fixture.hpp
@@ -0,0 +1,97 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2013-2020 Regents of the University of California.
+ *
+ * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
+ *
+ * ndn-cxx library is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * ndn-cxx library 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 Lesser General Public License for more details.
+ *
+ * You should have received copies of the GNU General Public License and GNU Lesser
+ * General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ */
+
+#ifndef NDN_CXX_TESTS_KEY_CHAIN_FIXTURE_HPP
+#define NDN_CXX_TESTS_KEY_CHAIN_FIXTURE_HPP
+
+#include "ndn-cxx/security/key-chain.hpp"
+#include "ndn-cxx/security/signing-helpers.hpp"
+
+#include "tests/test-home-fixture.hpp"
+
+namespace ndn {
+namespace tests {
+
+/**
+ * @brief A fixture providing an in-memory KeyChain.
+ *
+ * Test cases can use this fixture to create identities. Identities, certificates, and
+ * saved certificates are automatically removed during test teardown.
+ */
+class KeyChainFixture : public TestHomeFixture<DefaultPibDir>
+{
+protected:
+ using Certificate = ndn::security::Certificate;
+ using Identity = ndn::security::Identity;
+ using Key = ndn::security::Key;
+
+public:
+ /**
+ * @brief Creates and returns a certificate for a given key
+ * @param key The key for which to make a certificate
+ * @param issuer The IssuerId to include in the certificate name
+ * @param signingKey The key with which to sign the certificate; if not provided, the
+ * certificate will be self-signed
+ */
+ Certificate
+ makeCert(const Key& key, const std::string& issuer, const Key& signingKey = Key());
+
+ /**
+ * @brief Saves an NDN certificate to a file
+ * @return true if successful, false otherwise
+ */
+ bool
+ saveCert(const Data& cert, const std::string& filename);
+
+ /**
+ * @brief Saves the default certificate of @p identity to a file
+ * @return true if successful, false otherwise
+ */
+ bool
+ saveIdentityCert(const Identity& identity, const std::string& filename);
+
+ /**
+ * @brief Saves the default certificate of the identity named @p identityName to a file
+ * @param identityName Name of the identity
+ * @param filename File name, must be writable
+ * @param allowCreate If true, create the identity if it does not exist
+ * @return true if successful, false otherwise
+ */
+ bool
+ saveIdentityCert(const Name& identityName, const std::string& filename,
+ bool allowCreate = false);
+
+protected:
+ KeyChainFixture();
+
+ ~KeyChainFixture();
+
+protected:
+ ndn::KeyChain m_keyChain;
+
+private:
+ std::vector<std::string> m_certFiles;
+};
+
+} // namespace tests
+} // namespace ndn
+
+#endif // NDN_CXX_TESTS_KEY_CHAIN_FIXTURE_HPP