ladybird/Tests/LibC/TestLibCInodeWatcher.cpp
sin-ack 60eb4adac2 Tests: Add InodeWatcher and FileWatcher tests
This patch adds some rudimentary tests for InodeWatcher.  It tests the
basic functionality, but maybe there are corner cases I haven't caught.
Additionally, this is our first LibCore test. :^)
2021-05-12 22:38:20 +02:00

171 lines
4.2 KiB
C++

/*
* Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/NumericLimits.h>
#include <Kernel/API/InodeWatcherEvent.h>
#include <Kernel/API/InodeWatcherFlags.h>
#include <LibTest/TestCase.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <utime.h>
u8 buffer[MAXIMUM_EVENT_SIZE];
InodeWatcherEvent* event = reinterpret_cast<InodeWatcherEvent*>(buffer);
static int read_event(int fd)
{
int rc = read(fd, &buffer, MAXIMUM_EVENT_SIZE);
return rc;
}
static String get_event_name()
{
if (event->name_length == 0)
return String();
return String { event->name, event->name_length - 1 };
}
TEST_CASE(inode_watcher_metadata_modified_event)
{
int fd = create_inode_watcher(0);
EXPECT_NE(fd, -1);
int test_fd = creat("/tmp/testfile", 0777);
EXPECT_NE(test_fd, -1);
int wd = inode_watcher_add_watch(fd, "/tmp/testfile", 13, static_cast<unsigned>(InodeWatcherEvent::Type::MetadataModified));
EXPECT_NE(wd, -1);
// "touch" the file
int rc = utime("/tmp/testfile", nullptr);
EXPECT_NE(rc, -1);
rc = read_event(fd);
EXPECT_EQ(event->watch_descriptor, wd);
EXPECT_EQ(event->type, InodeWatcherEvent::Type::MetadataModified);
close(fd);
close(test_fd);
unlink("/tmp/testfile");
}
TEST_CASE(inode_watcher_content_modified_event)
{
int fd = create_inode_watcher(0);
EXPECT_NE(fd, -1);
int test_fd = creat("/tmp/testfile", 0777);
EXPECT_NE(test_fd, -1);
int wd = inode_watcher_add_watch(fd, "/tmp/testfile", 13, static_cast<unsigned>(InodeWatcherEvent::Type::ContentModified));
EXPECT_NE(wd, -1);
int rc = write(test_fd, "test", 4);
EXPECT_NE(rc, -1);
rc = read_event(fd);
EXPECT_NE(rc, -1);
EXPECT_EQ(event->watch_descriptor, wd);
EXPECT_EQ(event->type, InodeWatcherEvent::Type::ContentModified);
close(fd);
close(test_fd);
unlink("/tmp/testfile");
}
TEST_CASE(inode_watcher_deleted_event)
{
int fd = create_inode_watcher(0);
EXPECT_NE(fd, -1);
int test_fd = creat("/tmp/testfile", 0777);
EXPECT_NE(test_fd, -1);
int wd = inode_watcher_add_watch(fd, "/tmp/testfile", 13, static_cast<unsigned>(InodeWatcherEvent::Type::Deleted));
EXPECT_NE(wd, -1);
int rc = unlink("/tmp/testfile");
EXPECT_NE(rc, -1);
rc = read_event(fd);
EXPECT_NE(rc, -1);
EXPECT_EQ(event->watch_descriptor, wd);
EXPECT_EQ(event->type, InodeWatcherEvent::Type::Deleted);
close(fd);
close(test_fd);
}
TEST_CASE(inode_watcher_child_events)
{
int fd = create_inode_watcher(0);
EXPECT_NE(fd, -1);
int wd = inode_watcher_add_watch(fd, "/tmp/", 5, static_cast<unsigned>(InodeWatcherEvent::Type::ChildCreated | InodeWatcherEvent::Type::ChildDeleted));
EXPECT_NE(fd, -1);
int rc = creat("/tmp/testfile", 0777);
EXPECT_NE(rc, -1);
rc = read_event(fd);
EXPECT_NE(rc, -1);
EXPECT_EQ(event->watch_descriptor, wd);
EXPECT_EQ(event->type, InodeWatcherEvent::Type::ChildCreated);
VERIFY(event->name_length > 0);
EXPECT_EQ(get_event_name(), "testfile");
rc = unlink("/tmp/testfile");
EXPECT_NE(rc, -1);
rc = read_event(fd);
EXPECT_NE(rc, -1);
EXPECT_EQ(event->watch_descriptor, wd);
EXPECT_EQ(event->type, InodeWatcherEvent::Type::ChildDeleted);
VERIFY(event->name_length > 0);
EXPECT_EQ(get_event_name(), "testfile");
close(fd);
}
TEST_CASE(inode_watcher_closes_children_on_close)
{
int fd = create_inode_watcher(0);
EXPECT_NE(fd, -1);
int test_fd = creat("/tmp/testfile", 0777);
EXPECT_NE(test_fd, -1);
int wd = inode_watcher_add_watch(fd, "/tmp/testfile", 13, static_cast<unsigned>(InodeWatcherEvent::Type::MetadataModified));
EXPECT_NE(wd, -1);
int rc = utime("/tmp/testfile", nullptr);
EXPECT_NE(rc, -1);
close(fd);
rc = read_event(fd);
EXPECT_EQ(rc, -1);
EXPECT_EQ(errno, EBADF);
close(test_fd);
unlink("/tmp/testfile");
}
TEST_CASE(inode_watcher_nonblock)
{
int fd = create_inode_watcher(static_cast<unsigned>(InodeWatcherFlags::Nonblock));
EXPECT_NE(fd, -1);
int rc = read_event(fd);
EXPECT_EQ(rc, -1);
EXPECT_EQ(errno, EAGAIN);
close(fd);
}