take_front.hpp 2.7 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677
  1. // Copyright Louis Dionne 2013-2017
  2. // Distributed under the Boost Software License, Version 1.0.
  3. // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
  4. #ifndef BOOST_HANA_TEST_AUTO_TAKE_FRONT_HPP
  5. #define BOOST_HANA_TEST_AUTO_TAKE_FRONT_HPP
  6. #include <boost/hana/assert.hpp>
  7. #include <boost/hana/equal.hpp>
  8. #include <boost/hana/integral_constant.hpp>
  9. #include <boost/hana/take_front.hpp>
  10. #include "test_case.hpp"
  11. #include <laws/base.hpp>
  12. TestCase test_take{[]{
  13. namespace hana = boost::hana;
  14. using hana::test::ct_eq;
  15. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  16. hana::take_front(MAKE_TUPLE(), hana::size_c<0>),
  17. MAKE_TUPLE()
  18. ));
  19. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  20. hana::take_front(MAKE_TUPLE(), hana::size_c<1>),
  21. MAKE_TUPLE()
  22. ));
  23. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  24. hana::take_front(MAKE_TUPLE(), hana::size_c<2>),
  25. MAKE_TUPLE()
  26. ));
  27. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  28. hana::take_front(MAKE_TUPLE(ct_eq<0>{}), hana::size_c<0>),
  29. MAKE_TUPLE()
  30. ));
  31. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  32. hana::take_front(MAKE_TUPLE(ct_eq<0>{}), hana::size_c<1>),
  33. MAKE_TUPLE(ct_eq<0>{})
  34. ));
  35. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  36. hana::take_front(MAKE_TUPLE(ct_eq<0>{}), hana::size_c<2>),
  37. MAKE_TUPLE(ct_eq<0>{})
  38. ));
  39. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  40. hana::take_front(MAKE_TUPLE(ct_eq<0>{}), hana::size_c<3>),
  41. MAKE_TUPLE(ct_eq<0>{})
  42. ));
  43. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  44. hana::take_front(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}), hana::size_c<0>),
  45. MAKE_TUPLE()
  46. ));
  47. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  48. hana::take_front(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}), hana::size_c<1>),
  49. MAKE_TUPLE(ct_eq<0>{})
  50. ));
  51. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  52. hana::take_front(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}), hana::size_c<2>),
  53. MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{})
  54. ));
  55. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  56. hana::take_front(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}), hana::size_c<3>),
  57. MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{})
  58. ));
  59. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  60. hana::take_front(MAKE_TUPLE(
  61. ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{}, ct_eq<6>{},
  62. ct_eq<7>{}, ct_eq<8>{}, ct_eq<9>{}, ct_eq<10>{}, ct_eq<11>{}, ct_eq<12>{}, ct_eq<13>{}),
  63. hana::size_c<10>),
  64. MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{},
  65. ct_eq<5>{}, ct_eq<6>{}, ct_eq<7>{}, ct_eq<8>{}, ct_eq<9>{})
  66. ));
  67. }};
  68. #endif // !BOOST_HANA_TEST_AUTO_TAKE_FRONT_HPP