1 files changed, 71 insertions, 0 deletions
diff --git a/src/test/amount_tests.cpp b/src/test/amount_tests.cpp
new file mode 100644
index 0000000000..fd6f88b366
--- /dev/null
+++ b/src/test/amount_tests.cpp
@@ -0,0 +1,71 @@
+// Copyright (c) 2016 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "amount.h"
+#include "test/test_bitcoin.h"
+
+#include <boost/test/unit_test.hpp>
+
+BOOST_FIXTURE_TEST_SUITE(amount_tests, BasicTestingSetup)
+
+BOOST_AUTO_TEST_CASE(GetFeeTest)
+{
+    CFeeRate feeRate;
+
+    feeRate = CFeeRate(0);
+    // Must always return 0
+    BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(1e5), 0);
+
+    feeRate = CFeeRate(1000);
+    // Must always just return the arg
+    BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(1), 1);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(121), 121);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(999), 999);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), 1e3);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), 9e3);
+
+    feeRate = CFeeRate(-1000);
+    // Must always just return -1 * arg
+    BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(1), -1);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(121), -121);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(999), -999);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), -1e3);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), -9e3);
+
+    feeRate = CFeeRate(123);
+    // Truncates the result, if not integer
+    BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(8), 1); // Special case: returns 1 instead of 0
+    BOOST_CHECK_EQUAL(feeRate.GetFee(9), 1);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(121), 14);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(122), 15);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(999), 122);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(1e3), 123);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(9e3), 1107);
+
+    feeRate = CFeeRate(-123);
+    // Truncates the result, if not integer
+    BOOST_CHECK_EQUAL(feeRate.GetFee(0), 0);
+    BOOST_CHECK_EQUAL(feeRate.GetFee(8), -1); // Special case: returns -1 instead of 0
+    BOOST_CHECK_EQUAL(feeRate.GetFee(9), -1);
+
+    // Check full constructor
+    // default value
+    BOOST_CHECK(CFeeRate(CAmount(-1), 1000) == CFeeRate(-1));
+    BOOST_CHECK(CFeeRate(CAmount(0), 1000) == CFeeRate(0));
+    BOOST_CHECK(CFeeRate(CAmount(1), 1000) == CFeeRate(1));
+    // lost precision (can only resolve satoshis per kB)
+    BOOST_CHECK(CFeeRate(CAmount(1), 1001) == CFeeRate(0));
+    BOOST_CHECK(CFeeRate(CAmount(2), 1001) == CFeeRate(1));
+    // some more integer checks
+    BOOST_CHECK(CFeeRate(CAmount(26), 789) == CFeeRate(32));
+    BOOST_CHECK(CFeeRate(CAmount(27), 789) == CFeeRate(34));
+    // Maximum size in bytes, should not crash
+    CFeeRate(MAX_MONEY, std::numeric_limits<size_t>::max() >> 1).GetFeePerK();
+}
+
+BOOST_AUTO_TEST_SUITE_END()