diff --git a/test/testaddch.c b/test/testaddch.c
new file mode 100644
index 0000000..c1651c6
--- /dev/null
+++ b/test/testaddch.c
@@ -0,0 +1,88 @@
+/****************************************************************************
+ * Copyright (c) 1998-2002,2006 Free Software Foundation, Inc.              *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+/*
+ * This is an example written by Alexander V. Lukyanov <lav@yars.free.net>,
+ * to demonstrate an inconsistency between ncurses and SVr4 curses.
+ *
+ * $Id: testaddch.c,v 1.6 2006/04/01 19:08:03 tom Exp $
+ */
+#include <test.priv.h>
+
+static void
+attr_addstr(const char *s, chtype a)
+{
+    while (*s)
+	addch(((unsigned char) (*s++)) | a);
+}
+
+int
+main(
+	int argc GCC_UNUSED,
+	char *argv[]GCC_UNUSED)
+{
+    unsigned i;
+    chtype back, set, attr;
+
+    setlocale(LC_ALL, "");
+
+    initscr();
+    start_color();
+    init_pair(1, COLOR_WHITE, COLOR_BLUE);
+    init_pair(2, COLOR_WHITE, COLOR_RED);
+    init_pair(3, COLOR_BLACK, COLOR_MAGENTA);
+    init_pair(4, COLOR_BLACK, COLOR_GREEN);
+    init_pair(5, COLOR_BLACK, COLOR_CYAN);
+    init_pair(6, COLOR_BLACK, COLOR_YELLOW);
+    init_pair(7, COLOR_BLACK, COLOR_WHITE);
+
+    for (i = 0; i < 8; i++) {
+	back = (i & 1) ? A_BOLD | 'B' : ' ';
+	set = (i & 2) ? A_REVERSE : 0;
+	attr = (i & 4) ? COLOR_PAIR(4) : 0;
+
+	bkgdset(back);
+	attrset(set);
+
+	attr_addstr("Test string with spaces ->   <-\n", attr);
+    }
+    addch('\n');
+    for (i = 0; i < 8; i++) {
+	back = (i & 1) ? A_BOLD | 'B' | COLOR_PAIR(1) : ' ';
+	set = (i & 2) ? A_REVERSE | COLOR_PAIR(2) : 0;
+	attr = (i & 4) ? COLOR_PAIR(4) : 0;
+
+	bkgdset(back);
+	attrset(set);
+
+	attr_addstr("Test string with spaces ->   <-\n", attr);
+    }
+
+    getch();
+    endwin();
+    ExitProgram(EXIT_SUCCESS);
+}