add test for settings class

Makefile.am

@@ -242,6 +242,7 @@ test_libbitcoin_test_LDFLAGS = ${boost_LDFLAGS}
 test_libbitcoin_test_LDADD = src/libbitcoin.la ${boost_unit_test_framework_LIBS} ${boost_chrono_LIBS} ${boost_date_time_LIBS} ${boost_filesystem_LIBS} ${boost_iostreams_LIBS} ${boost_locale_LIBS} ${boost_log_LIBS} ${boost_program_options_LIBS} ${boost_regex_LIBS} ${boost_system_LIBS} ${boost_thread_LIBS} ${pthread_LIBS} ${rt_LIBS} ${icu_i18n_LIBS} ${dl_LIBS} ${png_LIBS} ${qrencode_LIBS} ${secp256k1_LIBS}
 test_libbitcoin_test_SOURCES = \
     test/main.cpp \
+    test/settings.cpp \
     test/chain/block.cpp \
     test/chain/compact.cpp \
     test/chain/header.cpp \

test/settings.cpp

@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) 2011-2018 libbitcoin developers (see AUTHORS)
+ *
+ * This file is part of libbitcoin.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <boost/test/unit_test.hpp>
+#include <bitcoin/bitcoin.hpp>
+
+using namespace bc;
+
+BOOST_AUTO_TEST_SUITE(settings_tests)
+
+// constructors
+//-----------------------------------------------------------------------------
+
+BOOST_AUTO_TEST_CASE(settings__construct__default_context__expected)
+{
+    settings configuration;
+    BOOST_REQUIRE_EQUAL(configuration.retargeting_factor, 4);
+    BOOST_REQUIRE_EQUAL(configuration.target_spacing_seconds, 600);
+    BOOST_REQUIRE_EQUAL(configuration.easy_spacing_seconds, 1200);
+    BOOST_REQUIRE_EQUAL(configuration.timestamp_future_seconds, 7200);
+    BOOST_REQUIRE_EQUAL(configuration.target_timespan_seconds, 1209600);
+    BOOST_REQUIRE_EQUAL(configuration.retarget_proof_of_work_limit, 0x1d00ffff);
+    BOOST_REQUIRE_EQUAL(configuration.no_retarget_proof_of_work_limit, 0x207fffff);
+    BOOST_REQUIRE_EQUAL(configuration.min_timespan, 302400);
+    BOOST_REQUIRE_EQUAL(configuration.max_timespan, 4838400);
+    BOOST_REQUIRE_EQUAL(configuration.retargeting_interval, 2016);
+}
+
+BOOST_AUTO_TEST_SUITE_END()