All (non etcd) tests are now local (#105)

We don't need to network to do tests, we up enough local servers
to we don't need to forward to,s say 8.8.8.8

test/proxy_test.go

@@ -0,0 +1,59 @@
+package test
+
+import (
+	"io/ioutil"
+	"log"
+	"os"
+	"testing"
+
+	"github.com/miekg/coredns/middleware"
+	"github.com/miekg/coredns/middleware/proxy"
+	"github.com/miekg/coredns/middleware/test"
+
+	"github.com/miekg/dns"
+)
+
+const exampleOrg = `; example.org test file
+example.org.		IN	SOA	sns.dns.icann.org. noc.dns.icann.org. 2015082541 7200 3600 1209600 3600
+example.org.		IN	NS	b.iana-servers.net.
+example.org.		IN	NS	a.iana-servers.net.
+example.org.		IN	A	127.0.0.1
+`
+
+func TestLookupProxy(t *testing.T) {
+	name, rm, err := test.Zone(t, ".", exampleOrg)
+	if err != nil {
+		t.Fatalf("failed to created zone: %s", err)
+	}
+	defer rm()
+
+	corefile := `example.org:0 {
+	file ` + name + `
+}
+`
+	ex, _, udp, err := Server(t, corefile)
+	if err != nil {
+		t.Fatalf("Could get server: %s", err)
+	}
+	defer ex.Stop()
+
+	log.SetOutput(ioutil.Discard)
+	defer log.SetOutput(os.Stderr)
+
+	p := proxy.New([]string{udp})
+	state := middleware.State{W: &test.ResponseWriter{}, Req: new(dns.Msg)}
+	resp, err := p.Lookup(state, "example.org.", dns.TypeA)
+	if err != nil {
+		t.Error("Expected to receive reply, but didn't")
+	}
+	// expect answer section with A record in it
+	if len(resp.Answer) == 0 {
+		t.Error("Expected to at least one RR in the answer section, got none")
+	}
+	if resp.Answer[0].Header().Rrtype != dns.TypeA {
+		t.Error("Expected RR to A, got: %d", resp.Answer[0].Header().Rrtype)
+	}
+	if resp.Answer[0].(*dns.A).A.String() != "127.0.0.1" {
+		t.Error("Expected 127.0.0.1, got: %d", resp.Answer[0].(*dns.A).A.String())
+	}
+}