add a Dash Test.

nettests/performance/dash.go

@@ -0,0 +1,41 @@
+package performance
+
+import (
+	"github.com/measurement-kit/go-measurement-kit"
+	"github.com/openobservatory/gooni/nettests"
+)
+
+// Dash test implementation
+type Dash struct {
+}
+
+// Run starts the test
+func (d Dash) Run(ctl *nettests.Controller) error {
+	dash := mk.Nettest{Name: "Dash"}
+	ctl.Init(&dash)
+	return dash.Run()
+}
+
+// DashSummary for the test
+// TODO: process 'receiver_data' to provide an array of performance for a chart.
+type DashSummary struct {
+	Latency float32
+	Bitrate int64
+	Delay   float32
+}
+
+// Summary generates a summary for a test run
+func (d Dash) Summary(tk map[string]interface{}) interface{} {
+	simple := tk["simple"].(map[string]interface{})
+
+	return DashSummary{
+		Latency: simple["connect_latency"].(float32),
+		Bitrate: simple["median_bitrate"].(int64),
+		Delay:   simple["min_playout_delay"].(float32),
+	}
+}
+
+// LogSummary writes the summary to the standard output
+func (d Dash) LogSummary(s string) error {
+	return nil
+}