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+// Copyright Louis Dionne 2013-2017
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+
+#include <boost/hana/adjust_if.hpp>
+#include <boost/hana/ap.hpp>
+#include <boost/hana/assert.hpp>
+#include <boost/hana/chain.hpp>
+#include <boost/hana/equal.hpp>
+#include <boost/hana/fill.hpp>
+#include <boost/hana/functional/always.hpp>
+#include <boost/hana/functional/compose.hpp>
+#include <boost/hana/lift.hpp>
+#include <boost/hana/replace_if.hpp>
+#include <boost/hana/tap.hpp>
+#include <boost/hana/then.hpp>
+#include <boost/hana/transform.hpp>
+#include <boost/hana/tuple.hpp>
+
+#include <laws/applicative.hpp>
+#include <laws/base.hpp>
+#include <laws/functor.hpp>
+#include <laws/monad.hpp>
+#include <support/cnumeric.hpp>
+#include <support/identity.hpp>
+namespace hana = boost::hana;
+using hana::test::ct_eq;
+
+
+int main() {
+ hana::test::_injection<0> f{};
+
+ // Functor
+ {
+ auto functor = ::identity;
+ // adjust_if
+ {
+ BOOST_HANA_CONSTANT_CHECK(hana::equal(
+ hana::adjust_if(functor(ct_eq<0>{}), hana::always(cnumeric<bool, true>), f),
+ functor(f(ct_eq<0>{}))
+ ));
+
+ BOOST_HANA_CONSTANT_CHECK(hana::equal(
+ hana::adjust_if(functor(ct_eq<0>{}), hana::always(cnumeric<bool, false>), f),
+ functor(ct_eq<0>{})
+ ));
+ }
+
+ // fill
+ {
+ BOOST_HANA_CONSTANT_CHECK(hana::equal(
+ hana::fill(functor(ct_eq<0>{}), ct_eq<1>{}),
+ functor(ct_eq<1>{})
+ ));
+ }
+
+ // transform
+ {
+ BOOST_HANA_CONSTANT_CHECK(hana::equal(
+ hana::transform(functor(ct_eq<0>{}), f),
+ functor(f(ct_eq<0>{}))
+ ));
+ }
+
+ // replace_if
+ {
+ BOOST_HANA_CONSTANT_CHECK(hana::equal(
+ hana::replace_if(functor(ct_eq<0>{}), hana::always(cnumeric<bool, true>), ct_eq<1>{}),
+ functor(ct_eq<1>{})
+ ));
+
+ BOOST_HANA_CONSTANT_CHECK(hana::equal(
+ hana::replace_if(functor(ct_eq<0>{}), hana::always(cnumeric<bool, false>), ct_eq<1>{}),
+ functor(ct_eq<0>{})
+ ));
+ }
+ }
+
+ // Applicative
+ {
+ auto a = ::identity;
+ using A = ::Identity;
+
+ // ap
+ {
+ BOOST_HANA_CONSTANT_CHECK(hana::equal(
+ hana::ap(a(f), a(ct_eq<0>{})),
+ a(f(ct_eq<0>{}))
+ ));
+
+ BOOST_HANA_CONSTANT_CHECK(hana::equal(
+ hana::ap(a(f), a(ct_eq<0>{}), a(ct_eq<1>{})),
+ a(f(ct_eq<0>{}, ct_eq<1>{}))
+ ));
+
+ BOOST_HANA_CONSTANT_CHECK(hana::equal(
+ hana::ap(a(f), a(ct_eq<0>{}), a(ct_eq<1>{}), a(ct_eq<2>{})),
+ a(f(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}))
+ ));
+
+ BOOST_HANA_CONSTANT_CHECK(hana::equal(
+ hana::ap(a(f), a(ct_eq<0>{}), a(ct_eq<1>{}), a(ct_eq<2>{}), a(ct_eq<3>{})),
+ a(f(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}))
+ ));
+ }
+
+ // lift
+ {
+ BOOST_HANA_CONSTANT_CHECK(hana::equal(
+ hana::lift<A>(ct_eq<0>{}),
+ a(ct_eq<0>{})
+ ));
+ }
+ }
+
+ // Monad
+ {
+ auto monad = ::identity;
+ using M = ::Identity;
+ auto f = hana::compose(monad, hana::test::_injection<0>{});
+
+ // chain
+ {
+ BOOST_HANA_CONSTANT_CHECK(hana::equal(
+ hana::chain(monad(ct_eq<1>{}), f),
+ f(ct_eq<1>{})
+ ));
+ }
+
+ // tap
+ {
+ bool executed = false;
+ auto exec = [&](auto) { executed = true; };
+ BOOST_HANA_CONSTANT_CHECK(hana::equal(
+ hana::chain(monad(ct_eq<0>{}), hana::tap<M>(exec)),
+ monad(ct_eq<0>{})
+ ));
+ BOOST_HANA_RUNTIME_CHECK(executed);
+ }
+
+ // then
+ {
+ struct invalid { };
+ BOOST_HANA_CONSTANT_CHECK(hana::equal(
+ hana::then(monad(invalid{}), monad(ct_eq<0>{})),
+ monad(ct_eq<0>{})
+ ));
+ }
+ }
+}