Add testing of the separate dectest repo

Author: mborland

test/CMakeLists.txt

@@ -7,17 +7,25 @@ include(BoostTestJamfile OPTIONAL RESULT_VARIABLE HAVE_BOOST_TEST)
 
 if(HAVE_BOOST_TEST)
 
-    find_package(fmt)
-    find_package(bson 2.0.2 CONFIG)
-    if(fmt_FOUND AND bson_FOUND)
-        message(STATUS "Boost.Decimal: Test with fmtlib and bson")
-        boost_test_jamfile(FILE Jamfile LINK_LIBRARIES Boost::decimal Boost::core Boost::math Boost::multiprecision Boost::charconv Boost::random fmt::fmt bson::bson  COMPILE_DEFINITIONS BOOST_DECIMAL_TEST_FMT BOOST_DECIMAL_TEST_BSON)
-    elseif(fmt_FOUND)
-        message(STATUS "Boost.Decimal: Test with fmtlib")
-        boost_test_jamfile(FILE Jamfile LINK_LIBRARIES Boost::decimal Boost::core Boost::math Boost::multiprecision Boost::charconv Boost::random fmt::fmt COMPILE_DEFINITIONS BOOST_DECIMAL_TEST_FMT)
+    if(BUILD_DECTEST_TESTING AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/decimal-dectest/CMakeLists.txt")
+
+        add_subdirectory(decimal-dectest)
+
     else()
-        message(STATUS "Boost.Decimal: Test without fmtlib and bson")
-        boost_test_jamfile(FILE Jamfile LINK_LIBRARIES Boost::decimal Boost::core Boost::math Boost::multiprecision Boost::charconv Boost::random)
+
+        find_package(fmt)
+        find_package(bson 2.0.2 CONFIG)
+        if(fmt_FOUND AND bson_FOUND)
+            message(STATUS "Boost.Decimal: Test with fmtlib and bson")
+            boost_test_jamfile(FILE Jamfile LINK_LIBRARIES Boost::decimal Boost::core Boost::math Boost::multiprecision Boost::charconv Boost::random fmt::fmt bson::bson  COMPILE_DEFINITIONS BOOST_DECIMAL_TEST_FMT BOOST_DECIMAL_TEST_BSON)
+        elseif(fmt_FOUND)
+            message(STATUS "Boost.Decimal: Test with fmtlib")
+            boost_test_jamfile(FILE Jamfile LINK_LIBRARIES Boost::decimal Boost::core Boost::math Boost::multiprecision Boost::charconv Boost::random fmt::fmt COMPILE_DEFINITIONS BOOST_DECIMAL_TEST_FMT)
+        else()
+            message(STATUS "Boost.Decimal: Test without fmtlib and bson")
+            boost_test_jamfile(FILE Jamfile LINK_LIBRARIES Boost::decimal Boost::core Boost::math Boost::multiprecision Boost::charconv Boost::random)
+        endif()
+
     endif()
 
 endif()