tests/subsys/fs/nffs_fs_api/src/test_corrupt_scratch.c

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

/*
 * SPDX-License-Identifier: Apache-2.0
 */

#include <stdint.h>
#include <nffs/nffs.h>
#include <fs.h>
#include "nffs_test_utils.h"
#include <ztest.h>
#include <ztest_assert.h>

void test_corrupt_scratch(void)
{
	int non_scratch_id;
	int scratch_id;
	int rc;

	static const struct nffs_area_desc area_descs_two[] = {
		{ 0x00020000, 128 * 1024 },
		{ 0x00040000, 128 * 1024 },
		{ 0, 0 },
	};
	nffs_current_area_descs = (struct nffs_area_desc *)area_descs_two;

	/*** Setup. */
	rc = nffs_format_full(area_descs_two);
	zassert_equal(rc, 0, "cannot format file");

	nffs_test_util_create_file("/myfile.txt", "contents", 8);

	/* Copy the current contents of the non-scratch area to the scratch area.
	 * This will make the scratch area look like it only partially
	 * participated in a garbage collection cycle.
	 */
	scratch_id = nffs_scratch_area_idx;
	non_scratch_id = scratch_id ^ 1;
	nffs_test_copy_area(area_descs_two + non_scratch_id,
					area_descs_two + nffs_scratch_area_idx);

	/* Add some more data to the non-scratch area. */
	rc = fs_mkdir("/mydir");
	zassert_equal(rc, 0, "cannot create directory");

	/*
	 * Ensure the file system is successfully detected and valid, despite
	 * corruption.
	 */

	rc = nffs_misc_reset();
	zassert_equal(rc, 0, "cannot reset nffs");

	rc = nffs_restore_full(area_descs_two);
	zassert_equal(rc, 0, "cannot detect nffs");

	zassert_equal(nffs_scratch_area_idx, scratch_id,
		      "scratch index not matching");

	struct nffs_test_file_desc *expected_system =
		(struct nffs_test_file_desc[]) { {
			.filename = "",
			.is_dir = 1,
			.children = (struct nffs_test_file_desc[]) { {
				.filename = "mydir",
				.is_dir = 1,
			}, {
				.filename = "myfile.txt",
				.contents = "contents",
				.contents_len = 8,
			}, {
				.filename = NULL,
			} },
		} };

	nffs_test_assert_system(expected_system, area_descs_two);
}