Don't include unit test sources in code coverage (RIPD-1132):

Most files containing unit test code are moved to
src/test. JTx and the test client code are not yet moved.

src/test/basics/mulDiv_test.cpp

@@ -0,0 +1,74 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2012-2016 Ripple Labs Inc.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#include <BeastConfig.h>
+#include <ripple/basics/mulDiv.h>
+#include <ripple/beast/unit_test.h>
+
+namespace ripple {
+namespace test {
+
+struct mulDiv_test : beast::unit_test::suite
+{
+    void run()
+    {
+        const auto max = std::numeric_limits<std::uint64_t>::max();
+        const std::uint64_t max32 = std::numeric_limits<std::uint32_t>::max();
+
+        auto result = mulDiv(85, 20, 5);
+        BEAST_EXPECT(result.first && result.second == 340);
+        result = mulDiv(20, 85, 5);
+        BEAST_EXPECT(result.first && result.second == 340);
+
+        result = mulDiv(0, max - 1, max - 3);
+        BEAST_EXPECT(result.first && result.second == 0);
+        result = mulDiv(max - 1, 0, max - 3);
+        BEAST_EXPECT(result.first && result.second == 0);
+
+        result = mulDiv(max, 2, max / 2);
+        BEAST_EXPECT(result.first && result.second == 4);
+        result = mulDiv(max, 1000, max / 1000);
+        BEAST_EXPECT(result.first && result.second == 1000000);
+        result = mulDiv(max, 1000, max / 1001);
+        BEAST_EXPECT(result.first && result.second == 1001000);
+        // 2^64 / 5 = 3689348814741910323, but we lose some precision
+        // starting in the 10th digit to avoid the overflow.
+        result = mulDiv(max32 + 1, max32 + 1, 5);
+        BEAST_EXPECT(result.first && result.second == 3689348813882916864);
+
+        // Overflow
+        result = mulDiv(max - 1, max - 2, 5);
+        BEAST_EXPECT(!result.first && result.second == max);
+
+        try
+        {
+            mulDivThrow(max - 1, max - 2, 5);
+            fail();
+        }
+        catch (std::overflow_error const& e)
+        {
+            BEAST_EXPECT(e.what() == std::string("mulDiv"));
+        }
+    }
+};
+
+BEAST_DEFINE_TESTSUITE(mulDiv, ripple_basics, ripple);
+
+}  // namespace test
+}  // namespace ripple