testing a broadcast receiver in an activity

Can anyone help me how to test a broadcast receiver in my activity? is there a way to push intents to a activity from a test class?

BroadcastReceiver usbReceiver = new BroadcastReceiver() {
        public void onReceive(Context context, Intent intent) {
            if (intent.getExtras().getBoolean("connected")) {
                Toast.makeText(getApplicationContext(), R.string.usb_connected_status, Toast.LENGTH_LONG).show();

            }
            else {
            Toast.makeText(getApplicationContext(), R.string.usb_disconnected_status, Toast.LENGTH_LONG).show();
            }
        }
    };