diff --git a/test/.gitignore b/test/.gitignore
index 0ba3620..42f6fec 100644
--- a/test/.gitignore
+++ b/test/.gitignore
@@ -14,5 +14,6 @@ nlist
 overlay
 proctitle-init
 proctitle
+setmode
 strl
 strmode
diff --git a/test/Makefile.am b/test/Makefile.am
index 4399121..983cefb 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -42,6 +42,7 @@ check_PROGRAMS = \
 	md5 \
 	nlist \
 	proctitle-init \
+	setmode \
 	strl \
 	strmode \
 	$(nil)
diff --git a/test/setmode.c b/test/setmode.c
new file mode 100644
index 0000000..c6fbcba
--- /dev/null
+++ b/test/setmode.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright © 2017 Guillem Jover <guillem@hadrons.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <assert.h>
+#include <unistd.h>
+
+int
+main(int argc, char **argv)
+{
+	umask(0);
+
+	assert(getmode(setmode("0"), 0) == 0);
+
+	assert(getmode(setmode("7777"), 0) == 07777);
+	assert(getmode(setmode("1555"), 0) == 01555);
+
+	assert(getmode(setmode("ugo=rwx"), 0) == 0777);
+
+	/* FIXME: Complete unit tests. */
+
+	return 0;
+}