//[example_output
> example
Running 1 test case...
test.cpp(8): error in "test": check ::boost::test_tools::tt_detail::is_defined_impl( "SYMBOL1", "= SYMBOL1" ) failed
test.cpp(9): error in "test": check ::boost::test_tools::tt_detail::is_defined_impl( "SYMBOL2(arg)", "= SYMBOL2(arg)" ) failed

*** 2 failures are detected in test suite "example"
//]