From 84ec6d2c747843c114ee11e6b5b04cfa3cfbb69c Mon Sep 17 00:00:00 2001
From: Kyle Altendorf <sda@fstab.net>
Date: Sat, 21 Sep 2019 16:12:31 -0400
Subject: [PATCH] Separate test function and main()

This allows for inclusion of the test function/file in a program with an
existing main().  This is an isolated piece of #19.
---
 makefile   | 2 +-
 test.c     | 2 +-
 testmain.c | 5 +++++
 3 files changed, 7 insertions(+), 2 deletions(-)
 create mode 100644 testmain.c

diff --git a/makefile b/makefile
index eebe3e9..c18cc85 100644
--- a/makefile
+++ b/makefile
@@ -1,6 +1,6 @@
 CC=gcc
 CFLAGS=-Wall --std=c99 
-SRC=siphash.c halfsiphash.c test.c
+SRC=siphash.c halfsiphash.c test.c testmain.c
 BIN=test debug vectors
 
 ifneq ($(cROUNDS),)
diff --git a/test.c b/test.c
index b6547a5..8120562 100644
--- a/test.c
+++ b/test.c
@@ -43,7 +43,7 @@ const char *labels[4] = {
 
 size_t lengths[4] = {8, 16, 4, 8};
 
-int main() {
+int siphash_test() {
     uint8_t in[64], out[16], k[16];
     int i;
 #ifndef GETVECTORS
diff --git a/testmain.c b/testmain.c
new file mode 100644
index 0000000..bb9e024
--- /dev/null
+++ b/testmain.c
@@ -0,0 +1,5 @@
+int siphash_test();
+
+int main(void) {
+    return siphash_test();
+}