39 lines · cpp
1//===- ErrnoTest.cpp - Error handling unit tests --------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "llvm/Support/Errno.h"10#include "gtest/gtest.h"11 12using namespace llvm::sys;13 14TEST(ErrnoTest, RetryAfterSignal) {15 EXPECT_EQ(1, RetryAfterSignal(-1, [] { return 1; }));16 17 EXPECT_EQ(-1, RetryAfterSignal(-1, [] {18 errno = EAGAIN;19 return -1;20 }));21 EXPECT_EQ(EAGAIN, errno);22 23 unsigned calls = 0;24 EXPECT_EQ(1, RetryAfterSignal(-1, [&calls] {25 errno = EINTR;26 ++calls;27 return calls == 1 ? -1 : 1;28 }));29 EXPECT_EQ(2u, calls);30 31 EXPECT_EQ(1, RetryAfterSignal(-1, [](int x) { return x; }, 1));32 33 std::unique_ptr<int> P(RetryAfterSignal(nullptr, [] { return new int(47); }));34 EXPECT_EQ(47, *P);35 36 errno = EINTR;37 EXPECT_EQ(-1, RetryAfterSignal(-1, [] { return -1; }));38}39