Add fs-tests from Adrian Hunter

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: Josh Boyer <jwboyer@gmail.com>

1 files changed, 201 insertions, 0 deletions

diff --git a/tests/fs-tests/simple/test_2.c b/tests/fs-tests/simple/test_2.c
new file mode 100644
index 0000000..2094460
--- /dev/null
+++ b/tests/fs-tests/simple/test_2.c
@@ -0,0 +1,201 @@
+/*
+ * Copyright (C) 2007 Nokia Corporation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ * Author: Adrian Hunter
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "tests.h"
+
+void test_2(void)
+{
+	pid_t pid;
+	int create, full;
+	unsigned i, number_of_files;
+	unsigned growth;
+	unsigned size;
+	uint64_t big_file_size;
+	int fd;
+	off_t offset;
+	char dir_name[256];
+
+	/* Create a directory to test in */
+	pid = getpid();
+	tests_cat_pid(dir_name, "test_2_test_dir_", pid);
+	if (chdir(dir_name) == -1)
+		CHECK(mkdir(dir_name, 0777) != -1);
+	CHECK(chdir(dir_name) != -1);
+	/* Create up to 1000 files appending 400 bytes at a time to each file */
+	/* until the file system is full.*/
+	create = 1;
+	full = 0;
+	number_of_files = 1000;
+	while (!full) {
+		for (i = 0; i < number_of_files; ++i) {
+			growth = tests_append_to_fragment_file(i, 400, create);
+			if (!growth) {
+				full = 1;
+				if (create)
+					number_of_files = i;
+				break;
+			}
+		}
+		create = 0;
+	}
+	/* Check the files */
+	CHECK(tests_count_files_in_dir(".") == number_of_files);
+	for (i = 0; i < number_of_files; ++i)
+		tests_check_fragment_file(i);
+	/* Delete half of them */
+	for (i = 1; i < number_of_files; i += 2)
+		tests_delete_fragment_file(i);
+	/* Check them again */
+	CHECK(tests_count_files_in_dir(".") == (number_of_files + 1) / 2);
+	for (i = 0; i < number_of_files; i += 2)
+		tests_check_fragment_file(i);
+	CHECK(tests_count_files_in_dir(".") == (number_of_files + 1) / 2);
+	/* Create a big file that fills two thirds of the free space */
+	big_file_size = tests_get_big_file_size(2,3);
+	/* Check the big file */
+	tests_create_file("big_file", big_file_size);
+	CHECK(tests_count_files_in_dir(".") == 1 + (number_of_files + 1) / 2);
+	tests_check_filled_file("big_file");
+	/* Open the big file */
+	fd = open("big_file",O_RDWR | tests_maybe_sync_flag());
+	CHECK(fd != -1);
+	/* Delete the big file while it is still open */
+	tests_delete_file("big_file");
+	/* Check the big file again */
+	CHECK(tests_count_files_in_dir(".") == (number_of_files + 1) / 2);
+	tests_check_filled_file_fd(fd);
+
+	/* Write parts of the files and check them */
+
+	offset = 100; /* Offset to write at, in the small files */
+	size = 200; /* Number of bytes to write at the offset */
+
+	for (i = 0; i < number_of_files; i += 2)
+		tests_overwite_fragment_file(i, offset, size);
+	/* Rewrite the big file entirely */
+	tests_write_filled_file(fd, 0, big_file_size);
+	for (i = 0; i < number_of_files; i += 2)
+		tests_check_fragment_file(i);
+	tests_check_filled_file_fd(fd);
+
+	offset = 300; /* Offset to write at, in the small files */
+	size = 400; /* Number of bytes to write at the offset */
+
+	for (i = 0; i < number_of_files; i += 2)
+		tests_overwite_fragment_file(i, offset, size);
+	/* Rewrite the big file entirely */
+	tests_write_filled_file(fd, 0, big_file_size);
+	for (i = 0; i < number_of_files; i += 2)
+		tests_check_fragment_file(i);
+	tests_check_filled_file_fd(fd);
+
+	offset = 110; /* Offset to write at, in the small files */
+	size = 10; /* Number of bytes to write at the offset */
+
+	for (i = 0; i < number_of_files; i += 2)
+		tests_overwite_fragment_file(i, offset, size);
+	/* Rewrite the big file entirely */
+	tests_write_filled_file(fd, 0, big_file_size);
+	for (i = 0; i < number_of_files; i += 2)
+		tests_check_fragment_file(i);
+	tests_check_filled_file_fd(fd);
+
+	offset = 10; /* Offset to write at, in the small files */
+	size = 1000; /* Number of bytes to write at the offset */
+
+	for (i = 0; i < number_of_files; i += 2)
+		tests_overwite_fragment_file(i, offset, size);
+	/* Rewrite the big file entirely */
+	tests_write_filled_file(fd, 0, big_file_size);
+	for (i = 0; i < number_of_files; i += 2)
+		tests_check_fragment_file(i);
+	tests_check_filled_file_fd(fd);
+
+	offset = 0; /* Offset to write at, in the small files */
+	size = 100000; /* Number of bytes to write at the offset */
+
+	for (i = 0; i < number_of_files; i += 2)
+		tests_overwite_fragment_file(i, offset, size);
+	/* Rewrite the big file entirely */
+	tests_write_filled_file(fd, 0, big_file_size);
+	for (i = 0; i < number_of_files; i += 2)
+		tests_check_fragment_file(i);
+	tests_check_filled_file_fd(fd);
+
+	/* Close the big file*/
+	CHECK(close(fd) != -1);
+	/* Check the small files */
+	CHECK(tests_count_files_in_dir(".") == (number_of_files + 1) / 2);
+	for (i = 0; i < number_of_files; i += 2)
+		tests_check_fragment_file(i);
+	/* Delete the small files */
+	for (i = 0; i < number_of_files; i += 2)
+		tests_delete_fragment_file(i);
+	CHECK(tests_count_files_in_dir(".") == 0);
+	CHECK(chdir("..") != -1);
+	CHECK(rmdir(dir_name) != -1);
+}
+
+/* Title of this test */
+
+const char *test_2_get_title(void)
+{
+	return "Repeated write many small files and one big deleted file";
+}
+
+/* Description of this test */
+
+const char *test_2_get_description(void)
+{
+	return
+		"Create a directory named test_2_test_dir_pid, where " \
+		"pid is the process id.  Within that directory, " \
+		"create about 1000 files.  Append 400 bytes to each until " \
+		"the file system is full.  Then delete half of them.  Then " \
+		"create a big file that uses about 2/3 of the remaining free " \
+		"space.  Get a file descriptor for the big file, and delete " \
+		"the big file.  Then repeatedly write to the small files " \
+		"and the big file. " \
+		"Finally delete the big file and directory.";
+}
+
+int main(int argc, char *argv[])
+{
+	int run_test;
+
+	/* Handle common arguments */
+	run_test = tests_get_args(argc, argv, test_2_get_title(),
+			test_2_get_description(), "s");
+	if (!run_test)
+		return 1;
+	/* Change directory to the file system and check it is ok for testing */
+	tests_check_test_file_system();
+	/* Do the actual test */
+	test_2();
+	return 0;
+}