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Message-ID: <20240922201631.179925-2-gbittencourt@lkcamp.dev>
Date: Sun, 22 Sep 2024 17:16:30 -0300
From: Gabriela Bittencourt <gbittencourt@...amp.dev>
To: Gabriel Krisman Bertazi <krisman@...nel.org>,
linux-fsdevel@...r.kernel.org,
linux-kernel@...r.kernel.org,
~lkcamp/patches@...ts.sr.ht
Cc: porlando@...amp.dev,
dpereira@...amp.dev
Subject: [PATCH 1/2] unicode: kunit: refactor selftest to kunit tests
Instead of creating 'test' functions, use kunit functions to test
utf-8 support in unicode subsystem.
Co-developed-by: Pedro Orlando <porlando@...amp.dev>
Signed-off-by: Pedro Orlando <porlando@...amp.dev>
Co-developed-by: Danilo Pereira <dpereira@...amp.dev>
Signed-off-by: Danilo Pereira <dpereira@...amp.dev>
Signed-off-by: Gabriela Bittencourt <gbittencourt@...amp.dev>
---
fs/unicode/.kunitconfig | 3 +
fs/unicode/Kconfig | 5 +-
fs/unicode/Makefile | 2 +-
fs/unicode/utf8-selftest.c | 152 +++++++++++++++++--------------------
4 files changed, 76 insertions(+), 86 deletions(-)
create mode 100644 fs/unicode/.kunitconfig
diff --git a/fs/unicode/.kunitconfig b/fs/unicode/.kunitconfig
new file mode 100644
index 000000000000..62dd5c171f9c
--- /dev/null
+++ b/fs/unicode/.kunitconfig
@@ -0,0 +1,3 @@
+CONFIG_KUNIT=y
+CONFIG_UNICODE=y
+CONFIG_UNICODE_NORMALIZATION_KUNIT_TEST=y
diff --git a/fs/unicode/Kconfig b/fs/unicode/Kconfig
index da786a687fdc..4ad2c36550f1 100644
--- a/fs/unicode/Kconfig
+++ b/fs/unicode/Kconfig
@@ -10,6 +10,7 @@ config UNICODE
be a separate loadable module that gets requested only when a file
system actually use it.
-config UNICODE_NORMALIZATION_SELFTEST
+config UNICODE_NORMALIZATION_KUNIT_TEST
tristate "Test UTF-8 normalization support"
- depends on UNICODE
+ depends on UNICODE && KUNIT
+ default KUNIT_ALL_TESTS
diff --git a/fs/unicode/Makefile b/fs/unicode/Makefile
index e309afe2b2bb..37bbcbc628a1 100644
--- a/fs/unicode/Makefile
+++ b/fs/unicode/Makefile
@@ -4,7 +4,7 @@ ifneq ($(CONFIG_UNICODE),)
obj-y += unicode.o
endif
obj-$(CONFIG_UNICODE) += utf8data.o
-obj-$(CONFIG_UNICODE_NORMALIZATION_SELFTEST) += utf8-selftest.o
+obj-$(CONFIG_UNICODE_NORMALIZATION_KUNIT_TEST) += utf8-selftest.o
unicode-y := utf8-norm.o utf8-core.o
diff --git a/fs/unicode/utf8-selftest.c b/fs/unicode/utf8-selftest.c
index 600e15efe9ed..54ded8db6b1c 100644
--- a/fs/unicode/utf8-selftest.c
+++ b/fs/unicode/utf8-selftest.c
@@ -1,38 +1,18 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * Kernel module for testing utf-8 support.
+ * KUnit tests for utf-8 support
*
* Copyright 2017 Collabora Ltd.
*/
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/printk.h>
#include <linux/unicode.h>
-#include <linux/dcache.h>
+#include <kunit/test.h>
#include "utf8n.h"
-static unsigned int failed_tests;
-static unsigned int total_tests;
-
/* Tests will be based on this version. */
#define UTF8_LATEST UNICODE_AGE(12, 1, 0)
-#define _test(cond, func, line, fmt, ...) do { \
- total_tests++; \
- if (!cond) { \
- failed_tests++; \
- pr_err("test %s:%d Failed: %s%s", \
- func, line, #cond, (fmt?":":".")); \
- if (fmt) \
- pr_err(fmt, ##__VA_ARGS__); \
- } \
- } while (0)
-#define test_f(cond, fmt, ...) _test(cond, __func__, __LINE__, fmt, ##__VA_ARGS__)
-#define test(cond) _test(cond, __func__, __LINE__, "")
-
static const struct {
/* UTF-8 strings in this vector _must_ be NULL-terminated. */
unsigned char str[10];
@@ -158,22 +138,22 @@ static const struct {
}
};
-static ssize_t utf8len(const struct unicode_map *um, enum utf8_normalization n,
- const char *s)
+static ssize_t utf8len(const struct unicode_map *um, enum utf8_normalization n, const char *s)
{
return utf8nlen(um, n, s, (size_t)-1);
}
static int utf8cursor(struct utf8cursor *u8c, const struct unicode_map *um,
- enum utf8_normalization n, const char *s)
+ enum utf8_normalization n, const char *s)
{
return utf8ncursor(u8c, um, n, s, (unsigned int)-1);
}
-static void check_utf8_nfdi(struct unicode_map *um)
+static void check_utf8_nfdi(struct kunit *test)
{
int i;
struct utf8cursor u8c;
+ struct unicode_map *um = test->priv;
for (i = 0; i < ARRAY_SIZE(nfdi_test_data); i++) {
int len = strlen(nfdi_test_data[i].str);
@@ -181,28 +161,29 @@ static void check_utf8_nfdi(struct unicode_map *um)
int j = 0;
unsigned char c;
- test((utf8len(um, UTF8_NFDI, nfdi_test_data[i].str) == nlen));
- test((utf8nlen(um, UTF8_NFDI, nfdi_test_data[i].str, len) ==
- nlen));
+ KUNIT_EXPECT_EQ(test, utf8len(um, UTF8_NFDI, nfdi_test_data[i].str), nlen);
+ KUNIT_EXPECT_EQ(test, utf8nlen(um, UTF8_NFDI, nfdi_test_data[i].str, len),
+ nlen);
- if (utf8cursor(&u8c, um, UTF8_NFDI, nfdi_test_data[i].str) < 0)
- pr_err("can't create cursor\n");
+ KUNIT_EXPECT_GE_MSG(test, utf8cursor(&u8c, um, UTF8_NFDI, nfdi_test_data[i].str),
+ 0, "Can't create cursor\n");
while ((c = utf8byte(&u8c)) > 0) {
- test_f((c == nfdi_test_data[i].dec[j]),
- "Unexpected byte 0x%x should be 0x%x\n",
- c, nfdi_test_data[i].dec[j]);
+ KUNIT_EXPECT_EQ_MSG(test, c, nfdi_test_data[i].dec[j],
+ "Unexpected byte 0x%x should be 0x%x\n",
+ c, nfdi_test_data[i].dec[j]);
j++;
}
- test((j == nlen));
+ KUNIT_EXPECT_EQ(test, j, nlen);
}
}
-static void check_utf8_nfdicf(struct unicode_map *um)
+static void check_utf8_nfdicf(struct kunit *test)
{
int i;
struct utf8cursor u8c;
+ struct unicode_map *um = test->priv;
for (i = 0; i < ARRAY_SIZE(nfdicf_test_data); i++) {
int len = strlen(nfdicf_test_data[i].str);
@@ -210,29 +191,30 @@ static void check_utf8_nfdicf(struct unicode_map *um)
int j = 0;
unsigned char c;
- test((utf8len(um, UTF8_NFDICF, nfdicf_test_data[i].str) ==
- nlen));
- test((utf8nlen(um, UTF8_NFDICF, nfdicf_test_data[i].str, len) ==
- nlen));
+ KUNIT_EXPECT_EQ(test, utf8len(um, UTF8_NFDICF, nfdicf_test_data[i].str),
+ nlen);
+ KUNIT_EXPECT_EQ(test, utf8nlen(um, UTF8_NFDICF, nfdicf_test_data[i].str, len),
+ nlen);
- if (utf8cursor(&u8c, um, UTF8_NFDICF,
- nfdicf_test_data[i].str) < 0)
- pr_err("can't create cursor\n");
+ KUNIT_EXPECT_GE_MSG(test,
+ utf8cursor(&u8c, um, UTF8_NFDICF, nfdicf_test_data[i].str),
+ 0, "Can't create cursor\n");
while ((c = utf8byte(&u8c)) > 0) {
- test_f((c == nfdicf_test_data[i].ncf[j]),
- "Unexpected byte 0x%x should be 0x%x\n",
- c, nfdicf_test_data[i].ncf[j]);
+ KUNIT_EXPECT_EQ_MSG(test, c, nfdicf_test_data[i].ncf[j],
+ "Unexpected byte 0x%x should be 0x%x\n",
+ c, nfdicf_test_data[i].ncf[j]);
j++;
}
- test((j == nlen));
+ KUNIT_EXPECT_EQ(test, j, nlen);
}
}
-static void check_utf8_comparisons(struct unicode_map *table)
+static void check_utf8_comparisons(struct kunit *test)
{
int i;
+ struct unicode_map *um = test->priv;
for (i = 0; i < ARRAY_SIZE(nfdi_test_data); i++) {
const struct qstr s1 = {.name = nfdi_test_data[i].str,
@@ -240,8 +222,9 @@ static void check_utf8_comparisons(struct unicode_map *table)
const struct qstr s2 = {.name = nfdi_test_data[i].dec,
.len = sizeof(nfdi_test_data[i].dec)};
- test_f(!utf8_strncmp(table, &s1, &s2),
- "%s %s comparison mismatch\n", s1.name, s2.name);
+ // strncmp returns 0 when strings are equal
+ KUNIT_EXPECT_EQ_MSG(test, utf8_strncmp(um, &s1, &s2), 0,
+ "%s %s comparison mismatch\n", s1.name, s2.name);
}
for (i = 0; i < ARRAY_SIZE(nfdicf_test_data); i++) {
@@ -250,62 +233,65 @@ static void check_utf8_comparisons(struct unicode_map *table)
const struct qstr s2 = {.name = nfdicf_test_data[i].ncf,
.len = sizeof(nfdicf_test_data[i].ncf)};
- test_f(!utf8_strncasecmp(table, &s1, &s2),
- "%s %s comparison mismatch\n", s1.name, s2.name);
+ // strncasecmp returns 0 when strings are equal
+ KUNIT_EXPECT_EQ_MSG(test, utf8_strncasecmp(um, &s1, &s2), 0,
+ "%s %s comparison mismatch\n", s1.name, s2.name);
}
}
-static void check_supported_versions(struct unicode_map *um)
+static void check_supported_versions(struct kunit *test)
{
+ struct unicode_map *um = test->priv;
/* Unicode 7.0.0 should be supported. */
- test(utf8version_is_supported(um, UNICODE_AGE(7, 0, 0)));
+ KUNIT_EXPECT_TRUE(test, utf8version_is_supported(um, UNICODE_AGE(7, 0, 0)));
/* Unicode 9.0.0 should be supported. */
- test(utf8version_is_supported(um, UNICODE_AGE(9, 0, 0)));
+ KUNIT_EXPECT_TRUE(test, utf8version_is_supported(um, UNICODE_AGE(9, 0, 0)));
/* Unicode 1x.0.0 (the latest version) should be supported. */
- test(utf8version_is_supported(um, UTF8_LATEST));
+ KUNIT_EXPECT_TRUE(test, utf8version_is_supported(um, UTF8_LATEST));
/* Next versions don't exist. */
- test(!utf8version_is_supported(um, UNICODE_AGE(13, 0, 0)));
- test(!utf8version_is_supported(um, UNICODE_AGE(0, 0, 0)));
- test(!utf8version_is_supported(um, UNICODE_AGE(-1, -1, -1)));
+ KUNIT_EXPECT_FALSE(test, utf8version_is_supported(um, UNICODE_AGE(13, 0, 0)));
+ KUNIT_EXPECT_FALSE(test, utf8version_is_supported(um, UNICODE_AGE(0, 0, 0)));
+ KUNIT_EXPECT_FALSE(test, utf8version_is_supported(um, UNICODE_AGE(-1, -1, -1)));
}
-static int __init init_test_ucd(void)
+static struct kunit_case unicode_normalization_test_cases[] = {
+ KUNIT_CASE(check_supported_versions),
+ KUNIT_CASE(check_utf8_comparisons),
+ KUNIT_CASE(check_utf8_nfdicf),
+ KUNIT_CASE(check_utf8_nfdi),
+ {}
+};
+
+static int init_test_ucd(struct kunit *test)
{
- struct unicode_map *um;
+ struct unicode_map *um = utf8_load(UTF8_LATEST);
- failed_tests = 0;
- total_tests = 0;
+ test->priv = um;
- um = utf8_load(UTF8_LATEST);
- if (IS_ERR(um)) {
- pr_err("%s: Unable to load utf8 table.\n", __func__);
- return PTR_ERR(um);
- }
+ KUNIT_EXPECT_EQ_MSG(test, IS_ERR(um), 0,
+ "%s: Unable to load utf8 table.\n", __func__);
- check_supported_versions(um);
- check_utf8_nfdi(um);
- check_utf8_nfdicf(um);
- check_utf8_comparisons(um);
-
- if (!failed_tests)
- pr_info("All %u tests passed\n", total_tests);
- else
- pr_err("%u out of %u tests failed\n", failed_tests,
- total_tests);
- utf8_unload(um);
return 0;
}
-static void __exit exit_test_ucd(void)
+static void exit_test_ucd(struct kunit *test)
{
+ utf8_unload(test->priv);
}
-module_init(init_test_ucd);
-module_exit(exit_test_ucd);
+static struct kunit_suite unicode_normalization_test_suite = {
+ .name = "unicode_normalization",
+ .test_cases = unicode_normalization_test_cases,
+ .init = init_test_ucd,
+ .exit = exit_test_ucd,
+};
+
+kunit_test_suite(unicode_normalization_test_suite);
+
MODULE_AUTHOR("Gabriel Krisman Bertazi <krisman@...labora.co.uk>");
-MODULE_DESCRIPTION("Kernel module for testing utf-8 support");
+MODULE_DESCRIPTION("KUnit tests for utf-8 support");
MODULE_LICENSE("GPL");
--
2.46.1
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