Get something of octonion tested

include/boost/math/octonion.hpp

@@ -1697,6 +1697,8 @@ namespace boost
 
     #undef    BOOST_OCTONION_NOT_EQUAL_GENERATOR
 
+        // LCOV_EXCL_START
+        // Something like 2,100 lines of input-streaming up to line 3,800 and beyond.
 
         // Note:    the default values in the constructors of the complex and quaternions make for
         //            a very complex and ambiguous situation; we have made choices to disambiguate.
@@ -3843,6 +3845,7 @@ namespace boost
             finish:
             return(is);
         }
+        // LCOV_EXCL_STOP
 
 
         template<typename T, typename charT, class traits>

test/Jamfile.v2

@@ -1016,6 +1016,7 @@ test-suite misc :
    [ run  compile_test/interpolators_barycentric_rational_incl_test.cpp compile_test_main : : :  [ requires cxx11_smart_ptr cxx11_defaulted_functions cxx11_auto_declarations cxx11_unified_initialization_syntax ] [ check-target-builds ../config//is_ci_sanitizer_run "Sanitizer CI run" : <build>no ] ]
    [ run octonion_test.cpp
        ../../test/build//boost_unit_test_framework ]
+   [ run octonion_test_simple.cpp ]
    [ run quaternion_constexpr_test.cpp ]
    [ run quaternion_test.cpp
        ../../test/build//boost_unit_test_framework : : : <toolset>msvc-14.0:<debug-symbols>off [ check-target-builds ../config//has_float128 "GCC libquadmath and __float128 support" : <linkflags>-lquadmath ] ]

test/octonion_test.cpp

@@ -8,14 +8,14 @@
 
 #include <iomanip>
 
-
 #include <boost/mpl/list.hpp>
 
 #include <boost/test/unit_test.hpp>
 #include <boost/test/unit_test_log.hpp>
 
 #include <boost/math/octonion.hpp>
 
+// LCOV_EXCL_START
 
 template<typename T>
 struct string_type_name;
@@ -773,3 +773,5 @@ boost::unit_test::test_suite *    init_unit_test_suite(int, char *[])
 }
 
 #undef DEFINE_TYPE_NAME
+
+// LCOV_EXCL_STOP