Merge r3368:

Add a test of the random director that uses actual randomness.

This will be skipped on platforms where srandom(1) does not result
in the same deterministic sequence of random numbers as on FreeBSD
and Linux.



git-svn-id: http://www.varnish-cache.org/svn/branches/2.0@3535 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishtest/tests/v00022.vtc

+# $Id$
+
+test "Deeper test of random director"
+
+random
+
+server s1 {
+	rxreq
+	txresp -body "1"
+} -start
+server s2 -listen 127.0.0.1:9180 {
+	rxreq
+	txresp -body "22"
+	rxreq
+	txresp -body "22"
+	rxreq
+	txresp -body "22"
+} -start
+server s3 -listen 127.0.0.1:9181 {
+	rxreq
+	txresp -body "333"
+} -start
+server s4 -listen 127.0.0.1:9182 {
+	rxreq
+	txresp -body "4444"
+	rxreq
+	txresp -body "4444"
+	rxreq
+	txresp -body "4444"
+	rxreq
+	txresp -body "4444"
+	rxreq
+	txresp -body "4444"
+} -start
+
+varnish v1 -vcl+backend {
+	director foo random {
+		{ .backend = s1; .weight = 1; }
+		{ .backend = s2; .weight = 1; }
+		{ .backend = s3; .weight = 1; }
+		{ .backend = s4; .weight = 1; }
+	}
+
+	sub vcl_recv {
+		set req.backend = foo;
+		pass;
+	}
+} -start
+
+# NB: Do not change the number 1
+# NB: Only srandom(1) is standardized as deterministic.
+
+varnish v1 -cliok "debug.srandom 1"
+
+client c1 {
+	txreq 
+	rxresp
+	expect resp.bodylen == 4
+	txreq 
+	rxresp
+	expect resp.bodylen == 2
+	txreq 
+	rxresp
+	expect resp.bodylen == 4
+	txreq 
+	rxresp
+	expect resp.bodylen == 4
+	txreq 
+	rxresp
+	expect resp.bodylen == 4
+	txreq 
+	rxresp
+	expect resp.bodylen == 1
+	txreq 
+	rxresp
+	expect resp.bodylen == 2
+	txreq 
+	rxresp
+	expect resp.bodylen == 4
+	txreq 
+	rxresp
+	expect resp.bodylen == 2
+	txreq 
+	rxresp
+	expect resp.bodylen == 3
+} -run