libc/test/src/wchar/swprintf_test.cpp

//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
///
/// \file
/// Unittests for swprintf.
///
//===----------------------------------------------------------------------===//

#include "hdr/errno_macros.h"
#include "hdr/types/size_t.h"
#include "hdr/types/wchar_t.h"
#include "src/wchar/swprintf.h"
#include "test/UnitTest/ErrnoCheckingTest.h"
#include "test/UnitTest/Test.h"

using LlvmLibcSwprintfTest = LIBC_NAMESPACE::testing::ErrnoCheckingTest;

TEST_F(LlvmLibcSwprintfTest, StubReturnsMinusOne) {
  wchar_t buf[10];
  int result = LIBC_NAMESPACE::swprintf(buf, 10, L"test");
  ASSERT_EQ(result, -1);
  ASSERT_ERRNO_EQ(ENOSYS);
}