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Telegram/ThirdParty/range-v3/test/view/move.cpp

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+// Range v3 library
+//
+//  Copyright Eric Niebler 2014-present
+//
+//  Use, modification and distribution is 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)
+//
+// Project home: https://github.com/ericniebler/range-v3
+
+#include <cstring>
+#include <string>
+#include <vector>
+#include <range/v3/core.hpp>
+#include <range/v3/view/move.hpp>
+#include <range/v3/algorithm/copy.hpp>
+#include <range/v3/iterator/operations.hpp>
+#include <range/v3/utility/copy.hpp>
+#include "../simple_test.hpp"
+#include "../test_utils.hpp"
+
+int main()
+{
+    using namespace ranges;
+    static const char * const data[] = {"'allo", "'allo", "???"};
+    std::vector<MoveOnlyString> vs(begin(data), end(data));
+    auto x = vs | views::move;
+
+    {
+        CPP_assert(common_range<decltype(x)>);
+        CPP_assert(sized_range<decltype(x)>);
+        CPP_assert(view_<decltype(x)>);
+        CPP_assert(common_range<decltype(x)>);
+        CPP_assert(sized_range<decltype(x)>);
+        CPP_assert(random_access_iterator<decltype(x.begin())>);
+        using I = decltype(x.begin());
+        CPP_assert(same_as<iterator_tag_of<I>, std::random_access_iterator_tag>);
+        CPP_assert(same_as<
+            typename std::iterator_traits<I>::iterator_category,
+            std::random_access_iterator_tag>);
+
+        CHECK(bool(*x.begin() == "'allo"));
+    }
+
+    {
+        std::vector<MoveOnlyString> vs2(x.begin(), x.end());
+        static_assert(std::is_same<MoveOnlyString&&, decltype(*x.begin())>::value, "");
+        ::check_equal(vs2, {"'allo", "'allo", "???"});
+        ::check_equal(vs, {"", "", ""});
+    }
+
+    {
+        MoveOnlyString rgs[] = {"can", "you", "hear", "me", "now?"};
+        auto rng = debug_input_view<MoveOnlyString>{rgs} | views::move;
+        MoveOnlyString target[sizeof(rgs) / sizeof(rgs[0])];
+        copy(rng, target);
+        ::check_equal(rgs, {"", "", "", "", ""});
+        ::check_equal(target, {"can", "you", "hear", "me", "now?"});
+    }
+
+    return test_result();
+}