18 #include <ranges>
48 struct ConstNotRange : std::ranges::view_base {
61     std::ranges::join_view jv(outer);  in test()
62     assert(jv.end() == std::ranges::next(jv.begin(), 16));  in test()
63     assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 16));  in test()
67     static_assert(std::ranges::common_range<decltype(jv)>);  in test()
68     static_assert(std::ranges::common_range<const decltype(jv)>);  in test()
76     std::ranges::join_view jv(outer);  in test()
77     assert(jv.end() == std::ranges::next(jv.begin(), 12));  in test()
78     assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 12));  in test()
82     static_assert(!std::ranges::common_range<decltype(jv)>);  in test()
83     static_assert(!std::ranges::common_range<const decltype(jv)>);  in test()
91     std::ranges::join_view jv(outer);  in test()
92     assert(jv.end() == std::ranges::next(jv.begin(), 12));  in test()
93     assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 12));  in test()
97     static_assert(!std::ranges::common_range<decltype(jv)>);  in test()
98     static_assert(!std::ranges::common_range<const decltype(jv)>);  in test()
106     std::ranges::join_view jv(outer);  in test()
107     assert(jv.end() == std::ranges::next(jv.begin(), 8));  in test()
110     static_assert(!std::ranges::common_range<decltype(jv)>);  in test()
111     static_assert(!std::ranges::common_range<const decltype(jv)>);  in test()
119     std::ranges::join_view jv(outer);  in test()
120     assert(jv.end() == std::ranges::next(jv.begin(), 16));  in test()
121     assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 16));  in test()
125     static_assert(!std::ranges::common_range<decltype(jv)>);  in test()
126     static_assert(!std::ranges::common_range<const decltype(jv)>);  in test()
134     std::ranges::join_view jv(outer);  in test()
135     assert(jv.end() == std::ranges::next(jv.begin(), 16));  in test()
138     static_assert(!std::ranges::common_range<decltype(jv)>);  in test()
139     static_assert(!std::ranges::common_range<const decltype(jv)>);  in test()
147     std::ranges::join_view jv(outer);  in test()
148     assert(jv.end() == std::ranges::next(jv.begin(), 4));  in test()
149     assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 4));  in test()
153     static_assert(std::ranges::common_range<decltype(jv)>);  in test()
154     static_assert(std::ranges::common_range<const decltype(jv)>);  in test()
162     std::ranges::join_view jv(outer);  in test()
163     assert(jv.end() == std::ranges::next(jv.begin(), 12));  in test()
164     assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 12));  in test()
168     static_assert(!std::ranges::common_range<decltype(jv)>);  in test()
169     static_assert(!std::ranges::common_range<const decltype(jv)>);  in test()
177     std::ranges::join_view jv(outer);  in test()
178     assert(jv.end() == std::ranges::next(jv.begin(), 12));  in test()
179     assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 12));  in test()
183     static_assert(!std::ranges::common_range<decltype(jv)>);  in test()
184     static_assert(!std::ranges::common_range<const decltype(jv)>);  in test()
192     std::ranges::join_view jv(outer);  in test()
193     assert(jv.end() == std::ranges::next(jv.begin(), 8));  in test()
196     static_assert(!std::ranges::common_range<decltype(jv)>);  in test()
197     static_assert(!std::ranges::common_range<const decltype(jv)>);  in test()
205     std::ranges::join_view jv(outer);  in test()
206     assert(jv.end() == std::ranges::next(jv.begin(), 16));  in test()
207     assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 16));  in test()
211     static_assert(!std::ranges::common_range<decltype(jv)>);  in test()
212     static_assert(!std::ranges::common_range<const decltype(jv)>);  in test()
220     std::ranges::join_view jv(outer);  in test()
221     assert(jv.end() == std::ranges::next(jv.begin(), 16));  in test()
224     static_assert(!std::ranges::common_range<decltype(jv)>);  in test()
225     static_assert(!std::ranges::common_range<const decltype(jv)>);  in test()
229     std::ranges::join_view jv(ConstNotRange{});  in test()
236     auto jv = std::ranges::join_view(ParentView(children));  in test()
237     assert(jv.end() == std::ranges::next(jv.begin(), 5));  in test()
243     std::ranges::join_view jv(ParentView(children, 0));  in test()
250     std::ranges::join_view jv(ParentView(children, 1));  in test()
251     assert(jv.end() == std::ranges::next(jv.begin(), 4));  in test()
257     std::ranges::join_view jv(ParentView(children, 1));  in test()
258     assert(jv.end() == std::ranges::next(jv.begin()));  in test()
264     std::ranges::join_view jv(ParentView(children, 1));  in test()
271     auto jv = std::ranges::join_view(ParentView(children));  in test()
278     auto jv = std::ranges::join_view(ParentView(children));  in test()
279     assert(jv.end() == std::ranges::next(jv.begin(), 4));  in test()
285     auto jv = std::ranges::join_view(ParentView(children));  in test()
286     assert(jv.end() == std::ranges::next(jv.begin(), 12));  in test()
291     std::ranges::join_view<ConstNonJoinableRange> jv;  in test()