take_while.hpp 2.2 KB

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  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_WHILE_HPP
  5. #define BOOST_HANA_TEST_AUTO_TAKE_WHILE_HPP
  6. #include <boost/hana/assert.hpp>
  7. #include <boost/hana/equal.hpp>
  8. #include <boost/hana/not_equal.hpp>
  9. #include <boost/hana/take_while.hpp>
  10. #include "test_case.hpp"
  11. #include <laws/base.hpp>
  12. TestCase test_take_while{[]{
  13. namespace hana = boost::hana;
  14. using hana::test::ct_eq;
  15. auto z = ct_eq<999>{};
  16. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  17. hana::take_while(MAKE_TUPLE(), hana::not_equal.to(z)),
  18. MAKE_TUPLE()
  19. ));
  20. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  21. hana::take_while(MAKE_TUPLE(ct_eq<1>{}), hana::not_equal.to(z)),
  22. MAKE_TUPLE(ct_eq<1>{})
  23. ));
  24. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  25. hana::take_while(MAKE_TUPLE(z), hana::not_equal.to(z)),
  26. MAKE_TUPLE()
  27. ));
  28. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  29. hana::take_while(MAKE_TUPLE(ct_eq<1>{}, ct_eq<2>{}), hana::not_equal.to(z)),
  30. MAKE_TUPLE(ct_eq<1>{}, ct_eq<2>{})
  31. ));
  32. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  33. hana::take_while(MAKE_TUPLE(ct_eq<1>{}, z), hana::not_equal.to(z)),
  34. MAKE_TUPLE(ct_eq<1>{})
  35. ));
  36. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  37. hana::take_while(MAKE_TUPLE(z, ct_eq<2>{}), hana::not_equal.to(z)),
  38. MAKE_TUPLE()
  39. ));
  40. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  41. hana::take_while(MAKE_TUPLE(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}), hana::not_equal.to(z)),
  42. MAKE_TUPLE(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{})
  43. ));
  44. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  45. hana::take_while(MAKE_TUPLE(ct_eq<1>{}, ct_eq<2>{}, z), hana::not_equal.to(z)),
  46. MAKE_TUPLE(ct_eq<1>{}, ct_eq<2>{})
  47. ));
  48. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  49. hana::take_while(MAKE_TUPLE(ct_eq<1>{}, z, ct_eq<3>{}), hana::not_equal.to(z)),
  50. MAKE_TUPLE(ct_eq<1>{})
  51. ));
  52. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  53. hana::take_while(MAKE_TUPLE(z, ct_eq<2>{}, ct_eq<3>{}), hana::not_equal.to(z)),
  54. MAKE_TUPLE()
  55. ));
  56. }};
  57. #endif // !BOOST_HANA_TEST_AUTO_TAKE_WHILE_HPP