1 //===- ErrnoTest.cpp - Error handling unit tests --------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "llvm/Support/Errno.h" 11 #include "gtest/gtest.h" 12 13 using namespace llvm::sys; 14 15 TEST(ErrnoTest, RetryAfterSignal) { 16 EXPECT_EQ(1, RetryAfterSignal(-1, [] { return 1; })); 17 18 EXPECT_EQ(-1, RetryAfterSignal(-1, [] { 19 errno = EAGAIN; 20 return -1; 21 })); 22 EXPECT_EQ(EAGAIN, errno); 23 24 unsigned calls = 0; 25 EXPECT_EQ(1, RetryAfterSignal(-1, [&calls] { 26 errno = EINTR; 27 ++calls; 28 return calls == 1 ? -1 : 1; 29 })); 30 EXPECT_EQ(2u, calls); 31 32 EXPECT_EQ(1, RetryAfterSignal(-1, [](int x) { return x; }, 1)); 33 34 std::unique_ptr<int> P(RetryAfterSignal(nullptr, [] { return new int(47); })); 35 EXPECT_EQ(47, *P); 36 } 37