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//===- ErrnoTest.cpp - Error handling unit tests --------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/Errno.h"
#include "gtest/gtest.h"
using namespace llvm::sys;
TEST(ErrnoTest, RetryAfterSignal) {
EXPECT_EQ(1, RetryAfterSignal(-1, [] { return 1; }));
EXPECT_EQ(-1, RetryAfterSignal(-1, [] {
errno = EAGAIN;
return -1;
}));
EXPECT_EQ(EAGAIN, errno);
unsigned calls = 0;
EXPECT_EQ(1, RetryAfterSignal(-1, [&calls] {
errno = EINTR;
++calls;
return calls == 1 ? -1 : 1;
}));
EXPECT_EQ(2u, calls);
EXPECT_EQ(1, RetryAfterSignal(-1, [](int x) { return x; }, 1));
std::unique_ptr<int> P(RetryAfterSignal(nullptr, [] { return new int(47); }));
EXPECT_EQ(47, *P);
errno = EINTR;
EXPECT_EQ(-1, RetryAfterSignal(-1, [] { return -1; }));
}
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