Add support for more tests

- Implement middlebox tests & summary generator
- Implement IM tests (summary generator missing)

nettests/im/facebook_messenger.go

@@ -0,0 +1,36 @@
+package im
+
+import (
+	"github.com/measurement-kit/go-measurement-kit"
+	"github.com/openobservatory/gooni/nettests"
+)
+
+// FacebookMessenger test implementation
+type FacebookMessenger struct {
+}
+
+// Run starts the test
+func (h FacebookMessenger) Run(ctl *nettests.Controller) error {
+	mknt := mk.NewNettest("FacebookMessenger")
+	ctl.Init(mknt)
+	return mknt.Run()
+}
+
+// FacebookMessengerSummary for the test
+type FacebookMessengerSummary struct {
+	DNSBlocking bool
+	TCPBlocking bool
+}
+
+// Summary generates a summary for a test run
+func (h FacebookMessenger) Summary(tk map[string]interface{}) interface{} {
+	return FacebookMessengerSummary{
+		DNSBlocking: tk["facebook_dns_blocking"].(bool),
+		TCPBlocking: tk["facebook_tcp_blocking"].(bool),
+	}
+}
+
+// LogSummary writes the summary to the standard output
+func (h FacebookMessenger) LogSummary(s string) error {
+	return nil
+}