From: Stephan Bosch <stephan.bosch@open-xchange.com>
Date: Fri, 25 Jul 2025 01:31:44 +0000 (+0200)
Subject: lib-test: Add test_assert_memcmp*()
X-Git-Tag: 2.4.2~630
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4677492d038f5187363790b5a93bd5fccc989a98;p=thirdparty%2Fdovecot%2Fcore.git

lib-test: Add test_assert_memcmp*()
---

diff --git a/src/lib-test/test-common.c b/src/lib-test/test-common.c
index 2a29eb02de..e556bf0ad2 100644
--- a/src/lib-test/test-common.c
+++ b/src/lib-test/test-common.c
@@ -84,6 +84,39 @@ void test_assert_failed_strcmp_idx(const char *code, const char *file, unsigned
 #endif
 }
 
+static void print_memcmp_data(const void *_data, size_t len)
+{
+	const unsigned char *data = _data;
+	size_t i;
+
+	for (i = 0; i < len; i++) {
+		if (data[i] >= 0x20 && data[i] < 0x7f)
+			printf("%c", data[i]);
+		else
+			printf("\\x%02X", data[i]);
+	}
+}
+
+void test_assert_failed_memcmp_idx(const char *code, const char *file, unsigned int line,
+				   const void *src, const void *dst, size_t len, long long i)
+{
+	printf("%s:%u: Assert", file, line);
+	if (i == LLONG_MIN)
+		printf(" failed: %s\n", code);
+	else
+		printf("(#%lld) failed: %s\n", i, code);
+	printf("        \"");
+	print_memcmp_data(src, len);
+	printf("\" != \"");
+	print_memcmp_data(dst, len);
+	printf("\" (len == %zu)", len);
+	fflush(stdout);
+	test_success = FALSE;
+#ifdef STATIC_CHECKER
+	i_unreached();
+#endif
+}
+
 void test_assert_failed_cmp_intmax_idx(const char *code, const char *file,
 				       unsigned int line,
 				       intmax_t src, intmax_t dst,
diff --git a/src/lib-test/test-common.h b/src/lib-test/test-common.h
index 5e3e5e43fa..2f06d67b13 100644
--- a/src/lib-test/test-common.h
+++ b/src/lib-test/test-common.h
@@ -40,7 +40,14 @@ void test_begin(const char *name);
 		test_assert_strcmp_idx(s1, s2, LLONG_MIN); \
 	} STMT_END
 
-/* Same as test_assert_strcmp expect that it takes an additional i as input.
+/* Additional parameters are m1 (source) and m2 (destination) memory and len
+ * in memcmp().
+ */
+#define test_assert_memcmp(m1, m2, len) STMT_START { \
+		test_assert_memcmp_idx(m1, m2, len, LLONG_MIN); \
+	} STMT_END
+
+/* Same as test_assert_strcmp except that it takes an additional i as input.
  * When i is greater than or equals 0 it is used to identify the barrage of
  * tests failed like in test_assert_idx.
 */
@@ -52,6 +59,19 @@ void test_begin(const char *name);
 						      __FILE__, __LINE__, _temp_s1, _temp_s2, i); \
 	} STMT_END
 
+/* Same as test_assert_memcmp except that it takes an additional i as input.
+ * When i is greater than or equals 0 it is used to identify the barrage of
+ * tests failed like in test_assert_idx.
+*/
+#define test_assert_memcmp_idx(_m1, _m2, _len, i) STMT_START { \
+		const void *_temp_m1 = (_m1); \
+		const void *_temp_m2 = (_m2); \
+		const size_t _temp_len = (_len); \
+		if ((memcmp(_temp_m1,_temp_m2, _temp_len) != 0)) \
+			test_assert_failed_memcmp_idx("memcmp(" #_m1 ","  #_m2 ","  #_len ")", \
+						      __FILE__, __LINE__, _temp_m1, _temp_m2, _temp_len, i); \
+	} STMT_END
+
 #define test_assert_cmp_bool(_bool_value1, _op, _value2) \
 	test_assert_cmp((unsigned int) _bool_value1, _op, (unsigned int _bool_value2))
 
@@ -92,6 +112,9 @@ void test_assert_failed_idx(const char *code, const char *file, unsigned int lin
 void test_assert_failed_strcmp_idx(const char *code, const char *file, unsigned int line,
 				   const char *src, const char *dst, long long i)
 	ATTR_STATIC_CHECKER_NORETURN;
+void test_assert_failed_memcmp_idx(const char *code, const char *file, unsigned int line,
+				   const void *src, const void *dst, size_t len, long long i)
+	ATTR_STATIC_CHECKER_NORETURN;
 void test_assert_failed_cmp_intmax_idx(const char *code, const char *file,
 				       unsigned int line,
 				       intmax_t src, intmax_t dst,