init

Telegram/ThirdParty/range-v3/test/algorithm/for_each.cpp

@@ -0,0 +1,63 @@
+// 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 <vector>
+#include <range/v3/core.hpp>
+#include <range/v3/algorithm/for_each.hpp>
+
+#include "../array.hpp"
+#include "../simple_test.hpp"
+#include "../test_iterators.hpp"
+
+struct S
+{
+    void p() const { *p_ += i_; }
+    int *p_;
+    int i_;
+};
+
+constexpr int void_f(int const &)
+{
+    return 3;
+}
+
+int main()
+{
+    int sum = 0;
+    auto fun = [&](int i){sum += i; };
+    std::vector<int> v1 { 0, 2, 4, 6 };
+    CHECK(ranges::for_each(v1.begin(), v1.end(), fun).in == v1.end());
+    CHECK(ranges::for_each(v1, fun).in == v1.end());
+    CHECK(sum == 24);
+
+    sum = 0;
+    auto rfun = [&](int & i){sum += i; };
+    CHECK(ranges::for_each(v1.begin(), v1.end(), rfun).in == v1.end());
+    CHECK(ranges::for_each(v1, rfun).in == v1.end());
+    CHECK(sum == 24);
+
+    sum = 0;
+    std::vector<S> v2{{&sum, 0}, {&sum, 2}, {&sum, 4}, {&sum, 6}};
+    CHECK(ranges::for_each(v2.begin(), v2.end(), &S::p).in == v2.end());
+    CHECK(ranges::for_each(v2, &S::p).in == v2.end());
+    CHECK(sum == 24);
+
+    sum = 0;
+    CHECK(::is_dangling(ranges::for_each(::MakeTestRange(v1.begin(), v1.end()), fun).in));
+    CHECK(sum == 12);
+
+    {
+        constexpr auto rng = test::array<int, 4>{{0, 2, 4, 6}};
+        STATIC_CHECK(ranges::for_each(rng, void_f).in == ranges::end(rng));
+    }
+
+    return ::test_result();
+}