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// SPDX-License-Identifier: GPL-2.0
/*
* KUnit tests for HFS string operations
*
* Copyright (C) 2025 Viacheslav Dubeyko <slava@dubeyko.com>
*/
#include <kunit/test.h>
#include <linux/dcache.h>
#include "hfs_fs.h"
/* Test hfs_strcmp function */
static void hfs_strcmp_test(struct kunit *test)
{
/* Test equal strings */
KUNIT_EXPECT_EQ(test, 0, hfs_strcmp("hello", 5, "hello", 5));
KUNIT_EXPECT_EQ(test, 0, hfs_strcmp("test", 4, "test", 4));
KUNIT_EXPECT_EQ(test, 0, hfs_strcmp("", 0, "", 0));
/* Test unequal strings */
KUNIT_EXPECT_NE(test, 0, hfs_strcmp("hello", 5, "world", 5));
KUNIT_EXPECT_NE(test, 0, hfs_strcmp("test", 4, "testing", 7));
/* Test different lengths */
KUNIT_EXPECT_LT(test, hfs_strcmp("test", 4, "testing", 7), 0);
KUNIT_EXPECT_GT(test, hfs_strcmp("testing", 7, "test", 4), 0);
/* Test case insensitive comparison (HFS should handle case) */
KUNIT_EXPECT_EQ(test, 0, hfs_strcmp("Test", 4, "TEST", 4));
KUNIT_EXPECT_EQ(test, 0, hfs_strcmp("hello", 5, "HELLO", 5));
/* Test with special characters */
KUNIT_EXPECT_EQ(test, 0, hfs_strcmp("file.txt", 8, "file.txt", 8));
KUNIT_EXPECT_NE(test, 0, hfs_strcmp("file.txt", 8, "file.dat", 8));
/* Test boundary cases */
KUNIT_EXPECT_EQ(test, 0, hfs_strcmp("a", 1, "a", 1));
KUNIT_EXPECT_NE(test, 0, hfs_strcmp("a", 1, "b", 1));
}
/* Test hfs_hash_dentry function */
static void hfs_hash_dentry_test(struct kunit *test)
{
struct qstr test_name1, test_name2, test_name3;
struct dentry dentry = {};
char name1[] = "testfile";
char name2[] = "TestFile";
char name3[] = "different";
/* Initialize test strings */
test_name1.name = name1;
test_name1.len = strlen(name1);
test_name1.hash = 0;
test_name2.name = name2;
test_name2.len = strlen(name2);
test_name2.hash = 0;
test_name3.name = name3;
test_name3.len = strlen(name3);
test_name3.hash = 0;
/* Test hashing */
KUNIT_EXPECT_EQ(test, 0, hfs_hash_dentry(&dentry, &test_name1));
KUNIT_EXPECT_EQ(test, 0, hfs_hash_dentry(&dentry, &test_name2));
KUNIT_EXPECT_EQ(test, 0, hfs_hash_dentry(&dentry, &test_name3));
/* Case insensitive names should hash the same */
KUNIT_EXPECT_EQ(test, test_name1.hash, test_name2.hash);
/* Different names should have different hashes */
KUNIT_EXPECT_NE(test, test_name1.hash, test_name3.hash);
}
/* Test hfs_compare_dentry function */
static void hfs_compare_dentry_test(struct kunit *test)
{
struct qstr test_name;
struct dentry dentry = {};
char name[] = "TestFile";
test_name.name = name;
test_name.len = strlen(name);
/* Test exact match */
KUNIT_EXPECT_EQ(test, 0, hfs_compare_dentry(&dentry, 8,
"TestFile", &test_name));
/* Test case insensitive match */
KUNIT_EXPECT_EQ(test, 0, hfs_compare_dentry(&dentry, 8,
"testfile", &test_name));
KUNIT_EXPECT_EQ(test, 0, hfs_compare_dentry(&dentry, 8,
"TESTFILE", &test_name));
/* Test different names */
KUNIT_EXPECT_EQ(test, 1, hfs_compare_dentry(&dentry, 8,
"DiffFile", &test_name));
/* Test different lengths */
KUNIT_EXPECT_EQ(test, 1, hfs_compare_dentry(&dentry, 7,
"TestFil", &test_name));
KUNIT_EXPECT_EQ(test, 1, hfs_compare_dentry(&dentry, 9,
"TestFiles", &test_name));
/* Test empty string */
test_name.name = "";
test_name.len = 0;
KUNIT_EXPECT_EQ(test, 0, hfs_compare_dentry(&dentry, 0, "", &test_name));
/* Test HFS_NAMELEN boundary */
test_name.name = "This_is_a_very_long_filename_that_exceeds_normal_limits";
test_name.len = strlen(test_name.name);
KUNIT_EXPECT_EQ(test, 0, hfs_compare_dentry(&dentry, HFS_NAMELEN,
"This_is_a_very_long_filename_th", &test_name));
}
static struct kunit_case hfs_string_test_cases[] = {
KUNIT_CASE(hfs_strcmp_test),
KUNIT_CASE(hfs_hash_dentry_test),
KUNIT_CASE(hfs_compare_dentry_test),
{}
};
static struct kunit_suite hfs_string_test_suite = {
.name = "hfs_string",
.test_cases = hfs_string_test_cases,
};
kunit_test_suite(hfs_string_test_suite);
MODULE_DESCRIPTION("KUnit tests for HFS string operations");
MODULE_LICENSE("GPL");
MODULE_IMPORT_NS("EXPORTED_FOR_KUNIT_TESTING");
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