1*df324bbaSzoecarver //===----------------------------------------------------------------------===//
2*df324bbaSzoecarver //
3*df324bbaSzoecarver // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4*df324bbaSzoecarver // See https://llvm.org/LICENSE.txt for license information.
5*df324bbaSzoecarver // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6*df324bbaSzoecarver //
7*df324bbaSzoecarver //===----------------------------------------------------------------------===//
8*df324bbaSzoecarver 
9*df324bbaSzoecarver // UNSUPPORTED: c++03, c++11, c++14, c++17
10*df324bbaSzoecarver // UNSUPPORTED: libcpp-no-concepts
11*df324bbaSzoecarver // UNSUPPORTED: libcpp-has-no-incomplete-ranges
12*df324bbaSzoecarver 
13*df324bbaSzoecarver // General tests for join_view. This file does not test anything specifically.
14*df324bbaSzoecarver 
15*df324bbaSzoecarver #include <algorithm>
16*df324bbaSzoecarver #include <cassert>
17*df324bbaSzoecarver #include <ranges>
18*df324bbaSzoecarver #include <string>
19*df324bbaSzoecarver #include <vector>
20*df324bbaSzoecarver 
21*df324bbaSzoecarver #include "test_macros.h"
22*df324bbaSzoecarver #include "types.h"
23*df324bbaSzoecarver 
24*df324bbaSzoecarver 
25*df324bbaSzoecarver template<class R, class I>
26*df324bbaSzoecarver bool isEqual(R &r, I i) {
27*df324bbaSzoecarver   for (auto e : r)
28*df324bbaSzoecarver     if (e != *i++)
29*df324bbaSzoecarver       return false;
30*df324bbaSzoecarver   return true;
31*df324bbaSzoecarver }
32*df324bbaSzoecarver 
33*df324bbaSzoecarver int main(int, char**) {
34*df324bbaSzoecarver   {
35*df324bbaSzoecarver     int buffer[4][4] = {{1111, 2222, 3333, 4444}, {555, 666, 777, 888}, {99, 1010, 1111, 1212}, {13, 14, 15, 16}};
36*df324bbaSzoecarver     int *flattened = reinterpret_cast<int*>(buffer);
37*df324bbaSzoecarver 
38*df324bbaSzoecarver     ChildView children[4] = {ChildView(buffer[0]), ChildView(buffer[1]), ChildView(buffer[2]), ChildView(buffer[3])};
39*df324bbaSzoecarver     auto jv = std::ranges::join_view(ParentView(children));
40*df324bbaSzoecarver     assert(isEqual(jv, flattened));
41*df324bbaSzoecarver   }
42*df324bbaSzoecarver 
43*df324bbaSzoecarver   {
44*df324bbaSzoecarver     std::vector<std::string> vec = {"Hello", ",", " ", "World", "!"};
45*df324bbaSzoecarver     std::string check = "Hello, World!";
46*df324bbaSzoecarver     std::ranges::join_view jv(vec);
47*df324bbaSzoecarver     assert(isEqual(jv, check.begin()));
48*df324bbaSzoecarver   }
49*df324bbaSzoecarver 
50*df324bbaSzoecarver   return 0;
51*df324bbaSzoecarver }
52