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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <gtest/gtest.h>
#include <errno.h>
#include <string.h>
TEST(string, strerror) {
// Valid.
ASSERT_STREQ("Success", strerror(0));
ASSERT_STREQ("Operation not permitted", strerror(1));
// Invalid.
ASSERT_STREQ("Unknown error 4294967295", strerror(-1));
ASSERT_STREQ("Unknown error 1234", strerror(1234));
}
#if __BIONIC__ // glibc's strerror isn't thread safe, only its strsignal.
static void* ConcurrentStrErrorFn(void*) {
bool equal = (strcmp("Unknown error 2002", strerror(2002)) == 0);
return reinterpret_cast<void*>(equal);
}
TEST(string, strerror_concurrent) {
const char* strerror1001 = strerror(1001);
ASSERT_STREQ("Unknown error 1001", strerror1001);
pthread_t t;
ASSERT_EQ(0, pthread_create(&t, NULL, ConcurrentStrErrorFn, NULL));
void* result;
ASSERT_EQ(0, pthread_join(t, &result));
ASSERT_TRUE(static_cast<bool>(result));
ASSERT_STREQ("Unknown error 1001", strerror1001);
}
#endif
#if __BIONIC__ // glibc's strerror_r doesn't even have the same signature as the POSIX one.
TEST(string, strerror_r) {
char buf[256];
// Valid.
ASSERT_EQ(0, strerror_r(0, buf, sizeof(buf)));
ASSERT_STREQ("Success", buf);
ASSERT_EQ(0, strerror_r(1, buf, sizeof(buf)));
ASSERT_STREQ("Operation not permitted", buf);
// Invalid.
ASSERT_EQ(0, strerror_r(-1, buf, sizeof(buf)));
ASSERT_STREQ("Unknown error 4294967295", buf);
ASSERT_EQ(0, strerror_r(1234, buf, sizeof(buf)));
ASSERT_STREQ("Unknown error 1234", buf);
// Buffer too small.
ASSERT_EQ(-1, strerror_r(0, buf, 2));
ASSERT_EQ(ERANGE, errno);
}
#endif
TEST(string, strsignal) {
// A regular signal.
ASSERT_STREQ("Hangup", strsignal(1));
// A real-time signal.
#ifdef __GLIBC__ // glibc reserves real-time signals for internal use, and doesn't count those.
ASSERT_STREQ("Real-time signal 14", strsignal(48));
#else
ASSERT_STREQ("Real-time signal 16", strsignal(48));
#endif
// Errors.
ASSERT_STREQ("Unknown signal -1", strsignal(-1)); // Too small.
ASSERT_STREQ("Unknown signal 0", strsignal(0)); // Still too small.
ASSERT_STREQ("Unknown signal 1234", strsignal(1234)); // Too large.
}
static void* ConcurrentStrSignalFn(void*) {
bool equal = (strcmp("Unknown signal 2002", strsignal(2002)) == 0);
return reinterpret_cast<void*>(equal);
}
TEST(string, strsignal_concurrent) {
const char* strsignal1001 = strsignal(1001);
ASSERT_STREQ("Unknown signal 1001", strsignal1001);
pthread_t t;
ASSERT_EQ(0, pthread_create(&t, NULL, ConcurrentStrSignalFn, NULL));
void* result;
ASSERT_EQ(0, pthread_join(t, &result));
ASSERT_TRUE(static_cast<bool>(result));
ASSERT_STREQ("Unknown signal 1001", strsignal1001);
}
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