86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
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/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <gtest/gtest.h>
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#include <errno.h>
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#include <limits.h>
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#include <unistd.h>
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TEST(getcwd, auto_full) {
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// If we let the library do all the work, everything's fine.
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errno = 0;
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char* cwd = getcwd(NULL, 0);
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ASSERT_TRUE(cwd != NULL);
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ASSERT_EQ(errno, 0);
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ASSERT_GE(strlen(cwd), 1U);
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free(cwd);
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}
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TEST(getcwd, auto_reasonable) {
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// If we ask the library to allocate a reasonable buffer, everything's fine.
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errno = 0;
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char* cwd = getcwd(NULL, PATH_MAX);
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ASSERT_TRUE(cwd != NULL);
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ASSERT_EQ(errno, 0);
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ASSERT_GE(strlen(cwd), 1U);
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free(cwd);
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}
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TEST(getcwd, auto_too_small) {
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// If we ask the library to allocate a too-small buffer, ERANGE.
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errno = 0;
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char* cwd = getcwd(NULL, 1);
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ASSERT_TRUE(cwd == NULL);
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ASSERT_EQ(errno, ERANGE);
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}
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TEST(getcwd, auto_too_large) {
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// If we ask the library to allocate an unreasonably large buffer, ERANGE.
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errno = 0;
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char* cwd = getcwd(NULL, static_cast<size_t>(-1));
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ASSERT_TRUE(cwd == NULL);
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ASSERT_EQ(errno, ENOMEM);
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}
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TEST(getcwd, manual_too_small) {
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// If we allocate a too-small buffer, ERANGE.
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char tiny_buf[1];
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errno = 0;
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char* cwd = getcwd(tiny_buf, sizeof(tiny_buf));
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ASSERT_TRUE(cwd == NULL);
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ASSERT_EQ(errno, ERANGE);
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}
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TEST(getcwd, manual_zero) {
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// If we allocate a zero-length buffer, EINVAL.
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char tiny_buf[1];
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errno = 0;
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char* cwd = getcwd(tiny_buf, 0);
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ASSERT_TRUE(cwd == NULL);
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ASSERT_EQ(errno, EINVAL);
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}
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TEST(getcwd, manual_path_max) {
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char* buf = new char[PATH_MAX];
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errno = 0;
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char* cwd = getcwd(buf, PATH_MAX);
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ASSERT_TRUE(cwd == buf);
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ASSERT_EQ(errno, 0);
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ASSERT_GE(strlen(cwd), 1U);
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delete[] cwd;
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}
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