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Tests/Kernel: Add a very simple test for posix_fallocate()

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This commit is contained in:
Andreas Kling 2022-11-27 20:14:25 +01:00
parent 4277e2d58f
commit e2771db50d
2 changed files with 75 additions and 0 deletions
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1
Tests/Kernel/CMakeLists.txt
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@ -40,6 +40,7 @@ set(LIBTEST_BASED_SOURCES
TestEmptySharedInodeVMObject.cpp
TestInvalidUIDSet.cpp
TestSharedInodeVMObject.cpp
TestPosixFallocate.cpp
TestPrivateInodeVMObject.cpp
TestKernelAlarm.cpp
TestKernelFilePermissions.cpp

74
Tests/Kernel/TestPosixFallocate.cpp Normal file
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@ -0,0 +1,74 @@
/*
* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCore/System.h>
#include <LibTest/TestCase.h>
TEST_CASE(posix_fallocate_basics)
{
char pattern[] = "/tmp/posix_fallocate.XXXXXX";
auto fd = MUST(Core::System::mkstemp(pattern));
VERIFY(fd >= 0);
{
// Valid use, grows file to new size.
auto result = Core::System::posix_fallocate(fd, 0, 1024);
EXPECT_EQ(result.is_error(), false);
auto stat = MUST(Core::System::fstat(fd));
EXPECT_EQ(stat.st_size, 1024);
}
{
// Invalid fd (-1)
auto result = Core::System::posix_fallocate(-1, 0, 1024);
EXPECT_EQ(result.is_error(), true);
EXPECT_EQ(result.error().code(), EBADF);
}
{
// Invalid length (-1)
auto result = Core::System::posix_fallocate(fd, 0, -1);
EXPECT_EQ(result.is_error(), true);
EXPECT_EQ(result.error().code(), EINVAL);
}
{
// Invalid length (0)
auto result = Core::System::posix_fallocate(fd, 0, 0);
EXPECT_EQ(result.is_error(), true);
EXPECT_EQ(result.error().code(), EINVAL);
}
{
// Invalid offset (-1)
auto result = Core::System::posix_fallocate(fd, -1, 1024);
EXPECT_EQ(result.is_error(), true);
EXPECT_EQ(result.error().code(), EINVAL);
}
MUST(Core::System::close(fd));
}
TEST_CASE(posix_fallocate_on_device_file)
{
auto fd = MUST(Core::System::open("/dev/zero"sv, O_RDWR));
VERIFY(fd >= 0);
auto result = Core::System::posix_fallocate(fd, 0, 100);
EXPECT_EQ(result.is_error(), true);
EXPECT_EQ(result.error().code(), ENODEV);
MUST(Core::System::close(fd));
}
TEST_CASE(posix_fallocate_on_pipe)
{
auto pipefds = MUST(Core::System::pipe2(0));
auto result = Core::System::posix_fallocate(pipefds[1], 0, 100);
EXPECT_EQ(result.is_error(), true);
EXPECT_EQ(result.error().code(), ESPIPE);
MUST(Core::System::close(pipefds[0]));
MUST(Core::System::close(pipefds[1]));
}