test: Add setproctitle() unit test

test/.gitignore

@@ -2,3 +2,4 @@ endian
 fgetln
 headers
 overlay
+proctitle

test/Makefile.am

@@ -12,8 +12,10 @@ check_PROGRAMS = \
 	overlay \
 	endian \
 	fgetln \
+	proctitle \
 	$(nil)
 
 fgetln_LDFLAGS = $(top_builddir)/src/libbsd.la
+proctitle_LDFLAGS = $(top_builddir)/src/libbsd.la
 
 TESTS = $(check_PROGRAMS)

test/proctitle.c

@@ -0,0 +1,48 @@
+/*
+ * Copyright © 2012 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 <sys/types.h>
+#include <assert.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+int
+main(int argc, char **argv)
+{
+	const char newtitle_base[] = "test arg1 arg2";
+	char *newtitle_full;
+
+	setproctitle("-test %s arg2", "arg1");
+	assert(strcmp(argv[0], newtitle_base) == 0);
+
+	asprintf(&newtitle_full, "%s: %s", getprogname(), newtitle_base);
+	setproctitle("test %s arg2", "arg1");
+	assert(strcmp(argv[0], newtitle_full) == 0);
+	free(newtitle_full);
+
+	return 0;
+}