unistd_test.cpp revision 11952073af22568bba0b661f7a9d4402c443a888
1/* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <gtest/gtest.h> 18#include "TemporaryFile.h" 19 20#include <stdint.h> 21#include <unistd.h> 22 23TEST(unistd, sysconf_SC_MONOTONIC_CLOCK) { 24 ASSERT_GT(sysconf(_SC_MONOTONIC_CLOCK), 0); 25} 26 27TEST(unistd, sbrk) { 28 void* initial_break = sbrk(0); 29 30 void* new_break = reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(initial_break) + 2000); 31 ASSERT_EQ(0, brk(new_break)); 32 33 void* final_break = sbrk(0); 34 ASSERT_EQ(final_break, new_break); 35} 36 37TEST(unistd, truncate) { 38 TemporaryFile tf; 39 ASSERT_EQ(0, close(tf.fd)); 40 ASSERT_EQ(0, truncate(tf.filename, 123)); 41 42 struct stat sb; 43 ASSERT_EQ(0, stat(tf.filename, &sb)); 44 ASSERT_EQ(123, sb.st_size); 45} 46 47TEST(unistd, truncate64) { 48 TemporaryFile tf; 49 ASSERT_EQ(0, close(tf.fd)); 50 ASSERT_EQ(0, truncate64(tf.filename, 123)); 51 52 struct stat sb; 53 ASSERT_EQ(0, stat(tf.filename, &sb)); 54 ASSERT_EQ(123, sb.st_size); 55} 56 57TEST(unistd, ftruncate) { 58 TemporaryFile tf; 59 ASSERT_EQ(0, ftruncate(tf.fd, 123)); 60 ASSERT_EQ(0, close(tf.fd)); 61 62 struct stat sb; 63 ASSERT_EQ(0, stat(tf.filename, &sb)); 64 ASSERT_EQ(123, sb.st_size); 65} 66 67TEST(unistd, ftruncate64) { 68 TemporaryFile tf; 69 ASSERT_EQ(0, ftruncate64(tf.fd, 123)); 70 ASSERT_EQ(0, close(tf.fd)); 71 72 struct stat sb; 73 ASSERT_EQ(0, stat(tf.filename, &sb)); 74 ASSERT_EQ(123, sb.st_size); 75} 76 77static bool gPauseTestFlag = false; 78static void PauseTestSignalHandler(int) { 79 gPauseTestFlag = true; 80} 81 82TEST(unistd, pause) { 83 signal(SIGALRM, PauseTestSignalHandler); 84 alarm(1); 85 ASSERT_FALSE(gPauseTestFlag); 86 ASSERT_EQ(-1, pause()); 87 ASSERT_TRUE(gPauseTestFlag); 88} 89