| // (C) Copyright Jesse Williamson 2009 |
| // Use, modification and distribution are subject to the |
| // Boost Software License, Version 1.0. (See accompanying file |
| // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| |
| #include <iostream> |
| #include <vector> |
| |
| #include <boost/config.hpp> |
| #include <boost/algorithm/clamp.hpp> |
| |
| #define BOOST_TEST_MAIN |
| #include <boost/test/unit_test.hpp> |
| |
| namespace ba = boost::algorithm; |
| |
| bool intGreater ( int lhs, int rhs ) { return lhs > rhs; } |
| bool doubleGreater ( double lhs, double rhs ) { return lhs > rhs; } |
| |
| class custom { |
| public: |
| custom ( int x ) : v(x) {} |
| custom ( const custom &rhs ) : v(rhs.v) {} |
| ~custom () {} |
| custom & operator = ( const custom &rhs ) { v = rhs.v; return *this; } |
| |
| bool operator < ( const custom &rhs ) const { return v < rhs.v; } |
| bool operator == ( const custom &rhs ) const { return v == rhs.v; } // need this for the test |
| |
| std::ostream & print ( std::ostream &os ) const { return os << v; } |
| |
| int v; |
| }; |
| |
| std::ostream & operator << ( std::ostream & os, const custom &x ) { return x.print ( os ); } |
| |
| bool customLess ( const custom &lhs, const custom &rhs ) { return lhs.v < rhs.v; } |
| |
| void test_ints() |
| { |
| |
| // Inside the range, equal to the endpoints, and outside the endpoints. |
| BOOST_CHECK_EQUAL ( 3, ba::clamp ( 3, 1, 10 )); |
| BOOST_CHECK_EQUAL ( 1, ba::clamp ( 1, 1, 10 )); |
| BOOST_CHECK_EQUAL ( 1, ba::clamp ( 0, 1, 10 )); |
| BOOST_CHECK_EQUAL ( 10, ba::clamp ( 10, 1, 10 )); |
| BOOST_CHECK_EQUAL ( 10, ba::clamp ( 11, 1, 10 )); |
| |
| BOOST_CHECK_EQUAL ( 3, ba::clamp ( 3, 10, 1, intGreater )); |
| BOOST_CHECK_EQUAL ( 1, ba::clamp ( 1, 10, 1, intGreater )); |
| BOOST_CHECK_EQUAL ( 1, ba::clamp ( 0, 10, 1, intGreater )); |
| BOOST_CHECK_EQUAL ( 10, ba::clamp ( 10, 10, 1, intGreater )); |
| BOOST_CHECK_EQUAL ( 10, ba::clamp ( 11, 10, 1, intGreater )); |
| |
| // Negative numbers |
| BOOST_CHECK_EQUAL ( -3, ba::clamp ( -3, -10, -1 )); |
| BOOST_CHECK_EQUAL ( -1, ba::clamp ( -1, -10, -1 )); |
| BOOST_CHECK_EQUAL ( -1, ba::clamp ( 0, -10, -1 )); |
| BOOST_CHECK_EQUAL ( -10, ba::clamp ( -10, -10, -1 )); |
| BOOST_CHECK_EQUAL ( -10, ba::clamp ( -11, -10, -1 )); |
| |
| // Mixed positive and negative numbers |
| BOOST_CHECK_EQUAL ( 5, ba::clamp ( 5, -10, 10 )); |
| BOOST_CHECK_EQUAL ( -10, ba::clamp ( -10, -10, 10 )); |
| BOOST_CHECK_EQUAL ( -10, ba::clamp ( -15, -10, 10 )); |
| BOOST_CHECK_EQUAL ( 10, ba::clamp ( 10, -10, 10 )); |
| BOOST_CHECK_EQUAL ( 10, ba::clamp ( 15, -10, 10 )); |
| |
| // Unsigned |
| BOOST_CHECK_EQUAL ( 5U, ba::clamp ( 5U, 1U, 10U )); |
| BOOST_CHECK_EQUAL ( 1U, ba::clamp ( 1U, 1U, 10U )); |
| BOOST_CHECK_EQUAL ( 1U, ba::clamp ( 0U, 1U, 10U )); |
| BOOST_CHECK_EQUAL ( 10U, ba::clamp ( 10U, 1U, 10U )); |
| BOOST_CHECK_EQUAL ( 10U, ba::clamp ( 15U, 1U, 10U )); |
| |
| // Mixed (1) |
| BOOST_CHECK_EQUAL ( 5U, ba::clamp ( 5U, 1, 10 )); |
| BOOST_CHECK_EQUAL ( 1U, ba::clamp ( 1U, 1, 10 )); |
| BOOST_CHECK_EQUAL ( 1U, ba::clamp ( 0U, 1, 10 )); |
| BOOST_CHECK_EQUAL ( 10U, ba::clamp ( 10U, 1, 10 )); |
| BOOST_CHECK_EQUAL ( 10U, ba::clamp ( 15U, 1, 10 )); |
| |
| // Mixed (3) |
| BOOST_CHECK_EQUAL ( 5U, ba::clamp ( 5U, 1, 10. )); |
| BOOST_CHECK_EQUAL ( 1U, ba::clamp ( 1U, 1, 10. )); |
| BOOST_CHECK_EQUAL ( 1U, ba::clamp ( 0U, 1, 10. )); |
| BOOST_CHECK_EQUAL ( 10U, ba::clamp ( 10U, 1, 10. )); |
| BOOST_CHECK_EQUAL ( 10U, ba::clamp ( 15U, 1, 10. )); |
| |
| short foo = 50; |
| BOOST_CHECK_EQUAL ( 56, ba::clamp ( foo, 56.9, 129 )); |
| BOOST_CHECK_EQUAL ( 24910, ba::clamp ( foo, 12345678, 123456999 )); |
| } |
| |
| |
| void test_floats() |
| { |
| |
| // Inside the range, equal to the endpoints, and outside the endpoints. |
| BOOST_CHECK_EQUAL ( 3.0, ba::clamp ( 3.0, 1.0, 10.0 )); |
| BOOST_CHECK_EQUAL ( 1.0, ba::clamp ( 1.0, 1.0, 10.0 )); |
| BOOST_CHECK_EQUAL ( 1.0, ba::clamp ( 0.0, 1.0, 10.0 )); |
| BOOST_CHECK_EQUAL ( 10.0, ba::clamp ( 10.0, 1.0, 10.0 )); |
| BOOST_CHECK_EQUAL ( 10.0, ba::clamp ( 11.0, 1.0, 10.0 )); |
| |
| BOOST_CHECK_EQUAL ( 3.0, ba::clamp ( 3.0, 10.0, 1.0, doubleGreater )); |
| BOOST_CHECK_EQUAL ( 1.0, ba::clamp ( 1.0, 10.0, 1.0, doubleGreater )); |
| BOOST_CHECK_EQUAL ( 1.0, ba::clamp ( 0.0, 10.0, 1.0, doubleGreater )); |
| BOOST_CHECK_EQUAL ( 10.0, ba::clamp ( 10.0, 10.0, 1.0, doubleGreater )); |
| BOOST_CHECK_EQUAL ( 10.0, ba::clamp ( 11.0, 10.0, 1.0, doubleGreater )); |
| |
| // Negative numbers |
| BOOST_CHECK_EQUAL ( -3.f, ba::clamp ( -3.f, -10.f, -1.f )); |
| BOOST_CHECK_EQUAL ( -1.f, ba::clamp ( -1.f, -10.f, -1.f )); |
| BOOST_CHECK_EQUAL ( -1.f, ba::clamp ( 0.f, -10.f, -1.f )); |
| BOOST_CHECK_EQUAL ( -10.f, ba::clamp ( -10.f, -10.f, -1.f )); |
| BOOST_CHECK_EQUAL ( -10.f, ba::clamp ( -11.f, -10.f, -1.f )); |
| |
| // Mixed positive and negative numbers |
| BOOST_CHECK_EQUAL ( 5.f, ba::clamp ( 5.f, -10.f, 10.f )); |
| BOOST_CHECK_EQUAL ( -10.f, ba::clamp ( -10.f, -10.f, 10.f )); |
| BOOST_CHECK_EQUAL ( -10.f, ba::clamp ( -15.f, -10.f, 10.f )); |
| BOOST_CHECK_EQUAL ( 10.f, ba::clamp ( 10.f, -10.f, 10.f )); |
| BOOST_CHECK_EQUAL ( 10.f, ba::clamp ( 15.f, -10.f, 10.f )); |
| |
| // Mixed (1) |
| BOOST_CHECK_EQUAL ( 5.f, ba::clamp ( 5.f, -10., 10. )); |
| BOOST_CHECK_EQUAL ( -10.f, ba::clamp ( -10.f, -10., 10. )); |
| BOOST_CHECK_EQUAL ( -10.f, ba::clamp ( -15.f, -10., 10. )); |
| BOOST_CHECK_EQUAL ( 10.f, ba::clamp ( 10.f, -10., 10. )); |
| BOOST_CHECK_EQUAL ( 10.f, ba::clamp ( 15.f, -10., 10. )); |
| |
| // Mixed (2) |
| BOOST_CHECK_EQUAL ( 5.f, ba::clamp ( 5.f, -10, 10 )); |
| BOOST_CHECK_EQUAL ( -10.f, ba::clamp ( -10.f, -10, 10 )); |
| BOOST_CHECK_EQUAL ( -10.f, ba::clamp ( -15.f, -10, 10 )); |
| BOOST_CHECK_EQUAL ( 10.f, ba::clamp ( 10.f, -10, 10 )); |
| BOOST_CHECK_EQUAL ( 10.f, ba::clamp ( 15.f, -10, 10 )); |
| } |
| |
| void test_custom() |
| { |
| |
| // Inside the range, equal to the endpoints, and outside the endpoints. |
| BOOST_CHECK_EQUAL ( custom( 3), ba::clamp ( custom( 3), custom(1), custom(10))); |
| BOOST_CHECK_EQUAL ( custom( 1), ba::clamp ( custom( 1), custom(1), custom(10))); |
| BOOST_CHECK_EQUAL ( custom( 1), ba::clamp ( custom( 0), custom(1), custom(10))); |
| BOOST_CHECK_EQUAL ( custom(10), ba::clamp ( custom(10), custom(1), custom(10))); |
| BOOST_CHECK_EQUAL ( custom(10), ba::clamp ( custom(11), custom(1), custom(10))); |
| |
| BOOST_CHECK_EQUAL ( custom( 3), ba::clamp ( custom( 3), custom(1), custom(10), customLess )); |
| BOOST_CHECK_EQUAL ( custom( 1), ba::clamp ( custom( 1), custom(1), custom(10), customLess )); |
| BOOST_CHECK_EQUAL ( custom( 1), ba::clamp ( custom( 0), custom(1), custom(10), customLess )); |
| BOOST_CHECK_EQUAL ( custom(10), ba::clamp ( custom(10), custom(1), custom(10), customLess )); |
| BOOST_CHECK_EQUAL ( custom(10), ba::clamp ( custom(11), custom(1), custom(10), customLess )); |
| |
| // Fail!! |
| // BOOST_CHECK_EQUAL ( custom(1), ba::clamp ( custom(11), custom(1), custom(10))); |
| } |
| |
| #define elementsof(v) (sizeof (v) / sizeof (v[0])) |
| #define a_begin(v) (&v[0]) |
| #define a_end(v) (v + elementsof (v)) |
| #define a_range(v) v |
| #define b_e(v) a_begin(v),a_end(v) |
| |
| void test_int_range () |
| { |
| int inputs [] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 99, 999, -1, -3, -99, 234234 }; |
| int outputs [] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 10, -1, -1, -1, 10 }; |
| std::vector<int> results; |
| std::vector<int> in_v; |
| |
| std::copy ( a_begin(inputs), a_end(inputs), std::back_inserter ( in_v )); |
| |
| ba::clamp_range ( a_begin(inputs), a_end(inputs), std::back_inserter ( results ), -1, 10 ); |
| BOOST_CHECK ( std::equal ( results.begin(), results.end (), outputs )); |
| results.clear (); |
| ba::clamp_range ( in_v.begin (), in_v.end (), std::back_inserter ( results ), -1, 10 ); |
| BOOST_CHECK ( std::equal ( results.begin(), results.end (), outputs )); |
| results.clear (); |
| |
| ba::clamp_range ( a_begin(inputs), a_end(inputs), std::back_inserter ( results ), 10, -1, intGreater ); |
| BOOST_CHECK ( std::equal ( results.begin(), results.end (), outputs )); |
| results.clear (); |
| ba::clamp_range ( in_v.begin (), in_v.end (), std::back_inserter ( results ), 10, -1, intGreater ); |
| BOOST_CHECK ( std::equal ( results.begin(), results.end (), outputs )); |
| results.clear (); |
| |
| ba::clamp_range ( a_range(inputs), std::back_inserter ( results ), -1, 10 ); |
| BOOST_CHECK ( std::equal ( results.begin(), results.end (), outputs )); |
| results.clear (); |
| ba::clamp_range ( in_v, std::back_inserter ( results ), -1, 10 ); |
| BOOST_CHECK ( std::equal ( results.begin(), results.end (), outputs )); |
| results.clear (); |
| |
| ba::clamp_range ( a_range(inputs), std::back_inserter ( results ), 10, -1, intGreater ); |
| BOOST_CHECK ( std::equal ( results.begin(), results.end (), outputs )); |
| results.clear (); |
| ba::clamp_range ( in_v, std::back_inserter ( results ), 10, -1, intGreater ); |
| BOOST_CHECK ( std::equal ( results.begin(), results.end (), outputs )); |
| results.clear (); |
| |
| int junk[elementsof(inputs)]; |
| ba::clamp_range ( inputs, junk, 10, -1, intGreater ); |
| BOOST_CHECK ( std::equal ( b_e(junk), outputs )); |
| } |
| |
| BOOST_AUTO_TEST_CASE( test_main ) |
| { |
| test_ints (); |
| test_floats (); |
| test_custom (); |
| |
| test_int_range (); |
| // test_float_range (); |
| // test_custom_range (); |
| } |