--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/extract/src/misc-test.c	Mon Sep 15 11:44:09 2025 +0200
@@ -0,0 +1,146 @@
+#include "memento.h"
+#include "xml.h"
+
+#include <errno.h>
+#include <stdio.h>
+
+
+static int s_num_fails = 0;
+
+static void s_check(
+		int         values_equal,
+		const char *text,
+		int         ret,
+		const char *value_s,
+		int         errno_,
+		const char *value_expected_s,
+		int         errno_expected
+		)
+{
+	int ok;
+
+	if (errno_expected)
+		ok = (ret == -1 && errno_ == errno_expected);
+	else
+		ok = (ret == 0 && values_equal);
+
+	if (ok)
+		printf("    ok:  ");
+	else
+		printf("    fail:");
+	printf(" text=%16s", text);
+	if (errno_expected)
+		printf(" errno_expected=%6i", errno_expected);
+	else
+		printf(" value_expected=%6s", value_expected_s);
+	printf(". result: ret=%2i value=%6s errno=%3i", ret, value_s, errno_);
+	printf(".\n");
+	if (!ok)
+		s_num_fails += 1;
+}
+
+static void s_check_e( int e, const char* text)
+{
+	if (e)
+	{
+		s_num_fails += 1;
+		printf( "Error: e=%i: %s\n", e, text);
+	}
+}
+
+static void s_check_int(const char* text, int value_expected, int expected_errno)
+{
+	int     value;
+	int     ret = extract_xml_str_to_int(text, &value);
+	char    value_s[32];
+	char    value_expected_s[32];
+	snprintf(value_s, sizeof(value_s), "%i", value);
+	snprintf(value_expected_s, sizeof(value_expected_s), "%i", value_expected);
+	s_check(value == value_expected, text, ret, value_s, errno, value_expected_s, expected_errno);
+}
+
+static void s_check_uint(const char* text, unsigned expected_value, int expected_errno)
+{
+	unsigned    value;
+	int         ret = extract_xml_str_to_uint(text, &value);
+	char        value_s[32];
+	char        value_expected_s[32];
+	snprintf(value_s, sizeof(value_s), "%u", value);
+	snprintf(value_expected_s, sizeof(value_expected_s), "%u", value);
+	s_check(value == expected_value, text, ret, value_s, errno, value_expected_s, expected_errno);
+}
+
+static void s_check_xml_parse()
+{
+	int e;
+	extract_buffer_t* buffer;
+	extract_xml_tag_t tag;
+	unsigned i;
+	const char* texts[] = {
+			"<foo a=1>text</foo>",
+			"< >",
+			"<foo bar=>",
+			"< bar=>",
+			"< =>",
+			};
+
+	extract_xml_tag_init( &tag);
+
+	for (i=0; i<sizeof(texts) / sizeof(texts[0]); ++i)
+	{
+		const char* text = texts[i];
+		printf("testing extract_xml_pparse_*(): %s\n", text);
+		e = extract_buffer_open_simple(
+				NULL /*alloc*/,
+				text,
+				strlen(text),
+				NULL /*handle*/,
+				NULL /*fn_close*/,
+				&buffer
+				);
+		s_check_e( e, "extract_buffer_open_simple()");
+		e = extract_xml_pparse_init( NULL /*alloc*/, buffer, NULL /*first_line*/);
+		s_check_e( e, "extract_xml_pparse_init()");
+
+		e = extract_xml_pparse_next( buffer, &tag);
+		s_check_e( e, "extract_xml_pparse_next()");
+		s_check_e( tag.name ? 0 : 1, "tag.name is not null");
+
+		{
+			int j;
+			for (j=0; j<tag.attributes_num; ++j)
+			{
+				s_check_e( tag.attributes[j].name ? 0 : 1, "attribute is non-null");
+				s_check_e( tag.attributes[j].value ? 0 : 1, "attribute is non-null");
+			}
+		}
+	}
+}
+
+int main(void)
+{
+	printf("testing extract_xml_str_to_int():\n");
+	s_check_int("2", 2, 0);
+	s_check_int("-20", -20, 0);
+	s_check_int("-20b", 0, EINVAL);
+	s_check_int("123456789123", 0, ERANGE);
+
+	printf("testing extract_xml_str_to_uint():\n");
+	s_check_uint("2", 2, 0);
+	s_check_uint("-20", 0, ERANGE);
+	s_check_uint("-20b", 0, EINVAL);
+	s_check_uint("123456789123", 0, ERANGE);
+
+	s_check_xml_parse();
+
+	printf("s_num_fails=%i\n", s_num_fails);
+
+	if (s_num_fails) {
+		printf("Failed\n");
+		return 1;
+	}
+	else {
+		printf("Succeeded\n");
+		return 0;
+	}
+}