Initial commit

module/jni/libcxx/test/std/strings/basic.string/string.capacity/reserve.pass.cpp

@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// void reserve(); // Deprecated in C++20.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+void
+test(typename S::size_type min_cap, typename S::size_type erased_index)
+{
+    S s(min_cap, 'a');
+    s.erase(erased_index);
+    assert(s.size() == erased_index);
+    assert(s.capacity() >= min_cap); // Check that we really have at least this capacity.
+
+    typename S::size_type old_cap = s.capacity();
+    S s0 = s;
+    s.reserve();
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == s0);
+    assert(s.capacity() <= old_cap);
+    assert(s.capacity() >= s.size());
+}
+
+bool test() {
+    {
+    typedef std::string S;
+    {
+    test<S>(0, 0);
+    test<S>(10, 5);
+    test<S>(100, 50);
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    {
+    test<S>(0, 0);
+    test<S>(10, 5);
+    test<S>(100, 50);
+    }
+    }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+
+  return 0;
+}