Initial commit

module/jni/libcxx/test/std/containers/sequences/array/at.pass.cpp

@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// reference at (size_type); // constexpr in C++17
+
+#include <array>
+#include <cassert>
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+#include <stdexcept>
+#endif
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX17 bool tests()
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        C c = {1, 2, 3.5};
+        typename C::reference r1 = c.at(0);
+        assert(r1 == 1);
+        r1 = 5.5;
+        assert(c[0] == 5.5);
+
+        typename C::reference r2 = c.at(2);
+        assert(r2 == 3.5);
+        r2 = 7.5;
+        assert(c[2] == 7.5);
+    }
+    return true;
+}
+
+void test_exceptions()
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::array<int, 4> array = {1, 2, 3, 4};
+
+        try {
+            TEST_IGNORE_NODISCARD array.at(4);
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+
+        try {
+            TEST_IGNORE_NODISCARD array.at(5);
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+
+        try {
+            TEST_IGNORE_NODISCARD array.at(6);
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+
+        try {
+            using size_type = decltype(array)::size_type;
+            TEST_IGNORE_NODISCARD array.at(static_cast<size_type>(-1));
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+    }
+
+    {
+        std::array<int, 0> array = {};
+
+        try {
+            TEST_IGNORE_NODISCARD array.at(0);
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+    }
+#endif
+}
+
+int main(int, char**)
+{
+    tests();
+    test_exceptions();
+
+#if TEST_STD_VER >= 17
+    static_assert(tests(), "");
+#endif
+    return 0;
+}