Add outgoing audio packet interval option

client_notification_test.go

@@ -70,6 +70,22 @@ func TestNotificationExpansionIsSinglePassAndNotifyDoesNotBlock(t *testing.T) {
 	}
 }
 
+func TestAudioIntervalDuration(t *testing.T) {
+	for _, milliseconds := range []int{10, 20, 40, 60} {
+		got, err := audioIntervalDuration(milliseconds)
+		if err != nil {
+			t.Errorf("audioIntervalDuration(%d): %v", milliseconds, err)
+			continue
+		}
+		if got != time.Duration(milliseconds)*time.Millisecond {
+			t.Errorf("audioIntervalDuration(%d) = %v", milliseconds, got)
+		}
+	}
+	if _, err := audioIntervalDuration(30); err == nil {
+		t.Fatal("audioIntervalDuration accepted unsupported duration")
+	}
+}
+
 func TestServerAddressDefaultsPortWithoutBreakingIPv6(t *testing.T) {
 	for input, want := range map[string]string{
 		"server":          "server:64738",