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        The header <boost/core/lightweight_test.hpp>
        is a lightweight test framework. It's useful for writing Boost regression
        tests for components that are dependencies of Boost.Test.
      
        When using lightweight_test.hpp,
        do not forget to return
        boost::report_errors()
        from main.
      
#define BOOST_TEST(expression) /*unspecified*/ #define BOOST_TEST_NOT(expression) /*unspecified*/ #define BOOST_ERROR(message) /*unspecified*/ #define BOOST_TEST_EQ(expr1, expr2) /*unspecified*/ #define BOOST_TEST_NE(expr1, expr2) /*unspecified*/ #define BOOST_TEST_THROWS(expr, excep) /*unspecified*/ namespace boost { int report_errors(); }
BOOST_TEST(expression)
          If expression is false increases the error count and outputs a message
          containing expression.
        
BOOST_TEST_NOT(expression)
          If expression is true increases the error count and outputs a message containing
          !(expression).
        
BOOST_TEST_EQ(expr1, expr2)
          If expr1 !=
          expr2 increases the error count
          and outputs a message containing both expressions.
        
BOOST_TEST_NE(expr1, expr2)
          If expr1 ==
          expr2 increases the error count
          and outputs a message containing both expressions.
        
BOOST_TEST_THROWS(expr, excep)
          If BOOST_NO_EXCEPTIONS
          is not defined and if expr
          does not throw an exception of type excep,
          increases the error count and outputs a message containing the expression.
        
          If BOOST_NO_EXCEPTIONS
          is defined, this macro expands to nothing and expr
          is not evaluated.
        
#include <boost/core/lightweight_test.hpp> int sqr( int x ) { return x * x; } int main() { BOOST_TEST( sqr(2) == 4 ); BOOST_TEST_EQ( sqr(-3), 9 ); return boost::report_errors(); }
        The header <boost/core/lightweight_test_trait.hpp>
        defines a couple of extra macros for testing compile-time traits that return
        a boolean value.
      
#define BOOST_TEST_TRAIT_TRUE((Trait)) /*unspecified*/ #define BOOST_TEST_TRAIT_FALSE((Trait)) /*unspecified*/
BOOST_TEST_TRAIT_TRUE((Trait))
          If Trait::value != true increases the error count and outputs
          a message containing Trait.
          Note the double set of parentheses; these enable Trait
          to contain a comma, which is common for templates.
        
BOOST_TEST_TRAIT_FALSE((Trait))
          If Trait::value != false increases the error count and outputs
          a message containing Trait.
          Note the double set of parentheses.
        
#include <boost/core/lightweight_test_trait.hpp> #include <boost/core/is_same.hpp> template<class T, class U> struct X { typedef T type; }; using boost::core::is_same; int main() { BOOST_TEST_TRAIT_TRUE(( is_same<X<int, long>::type, int> )); return boost::report_errors(); }