QNT: Add odd-size image test

src/CMakeLists.txt

@@ -193,9 +193,10 @@ else()  # non-emscripten, non-android
     src_tests.c
     gameresource_test.c
     hankaku_test.c
+    qnt_test.c
     )
   target_compile_options(src_tests PRIVATE -Wno-pointer-sign -Wall)
-  target_link_libraries(src_tests PRIVATE src_lib)
+  target_link_libraries(src_tests PRIVATE src_lib sdl2)
   add_test(NAME src_tests COMMAND src_tests)
-  configure_file(testdata/test.gr ${CMAKE_CURRENT_BINARY_DIR}/testdata/test.gr COPYONLY)
+  file(COPY testdata DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
 endif()

src/qnt_test.c

@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2026 <KichikuouChrome@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "cg.h"
+#include "qnt.h"
+#include "unittest.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+static void odd_size_test(void) {
+	FILE *fp = fopen("testdata/odd-size.qnt", "rb");
+	ASSERT_TRUE(fp);
+
+	fseek(fp, 0, SEEK_END);
+	long size = ftell(fp);
+	rewind(fp);
+	uint8_t *data = malloc(size);
+	ASSERT_EQUAL(fread(data, 1, size, fp), size);
+	fclose(fp);
+
+	cgdata *cg = qnt_extract(data);
+	ASSERT_EQUAL(cg->width, 3);
+	ASSERT_EQUAL(cg->height, 3);
+	ASSERT_TRUE(cg->alpha);
+
+	const uint8_t expected[] = {
+		0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, 0x80, 0x90,
+		0xa0, 0xb0, 0xc0, 0xd0, 0xe0, 0xf0, 0x11, 0x22, 0x33,
+		0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc,
+	};
+	ASSERT_TRUE(!memcmp(cg->pic, expected, sizeof(expected)));
+
+	const uint8_t expected_alpha[] = {
+		0xff, 0x80, 0x40,
+		0xff, 0x20, 0xc0,
+		0x7f, 0xfe, 0x10,
+	};
+	ASSERT_TRUE(!memcmp(cg->alpha, expected_alpha, sizeof(expected_alpha)));
+
+	free(cg->pic);
+	free(cg->alpha);
+	free(cg);
+	free(data);
+}
+
+void qnt_test(void) {
+	odd_size_test();
+}

src/src_tests.c

@@ -22,6 +22,7 @@
 
 void gameresource_test(void);
 void hankaku_test(void);
+void qnt_test(void);
 
 void sys_error(char *format, ...) {
 	va_list args;
@@ -31,8 +32,16 @@ void sys_error(char *format, ...) {
 	exit(1);
 }
 
+void sys_message(int level, char *format, ...) {
+	va_list args;
+	va_start(args, format);
+	vfprintf(stderr, format, args);
+	va_end(args);
+}
+
 int main() {
 	gameresource_test();
 	hankaku_test();
+	qnt_test();
 	return 0;
 }