// 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");