Test file derived from #4

test.pl

@@ -0,0 +1,20 @@
+#!/usr/bin/perl
+
+# Borrowed from https://github.com/WiringPi/WiringPi-Perl/issues/4 - thank you ;)
+
+use wiringpi;
+use constant {
+    OUTPUT=>1,
+    INPUT=>0,
+    HIGH=>1,
+    LOW=>0
+};
+
+if( wiringpi::wiringPiSetup()==-1 ){
+    die 1;
+}
+
+wiringpi::pinMode(8,INPUT);
+
+print("Reading pin BCM 2 (SDA) which has a hardware pull-up\n");
+print("result should be 1: ".wiringpi::digitalRead(8)."\n");