diff --git a/tangostationcontrol/tangostationcontrol/test/devices/test_recv_device.py b/tangostationcontrol/tangostationcontrol/test/devices/test_recv_device.py
index f918f5e6552538a6cb02da60a18c62ac779272a5..db7cf6b76f77e2984f78699c4e280897807b89cb 100644
--- a/tangostationcontrol/tangostationcontrol/test/devices/test_recv_device.py
+++ b/tangostationcontrol/tangostationcontrol/test/devices/test_recv_device.py
@@ -8,11 +8,12 @@
 # See LICENSE.txt for more info.
 
 from tango.test_context import DeviceTestContext
-from tango import DeviceProxy
+from tango import DeviceProxy, DevState
 
 from tangostationcontrol.devices import recv, lofar_device
 
 import mock
+import numpy
 
 from tangostationcontrol.test import base
 
@@ -34,8 +35,10 @@ class TestRecvDevice(base.TestCase):
     def init_device(self, proxy:DeviceProxy):
         proxy.off()
         proxy.initialise()
+        self.assertEqual(DevState.STANDBY, proxy.state())
         proxy.set_defaults()
         proxy.on()
+        self.assertEqual(DevState.ON, proxy.state())
 
     def test_get_hbat_bf_delay_step_delays(self):
         """Verify can read delay step attribute and length matches without err"""
@@ -60,3 +63,11 @@ class TestRecvDevice(base.TestCase):
         with DeviceTestContext(recv.RECV, properties=self.recv_properties, process=True) as proxy:
             self.init_device(proxy)
             self.assertEqual(3072, len(proxy.get_hbat_signal_input_delays()))     # 96x32=3072
+    
+    def test_calculate_HBAT_bf_delays(self):
+        """Verify HBAT beamforming calculations are correctly executed"""
+        with DeviceTestContext(recv.RECV, properties=self.recv_properties, process=True) as proxy:
+            self.init_device(proxy)
+            delays = numpy.random.rand(96,16).flatten()
+            HBAT_bf_delays = proxy.calculate_HBAT_bf_delays(delays)
+            self.assertEqual(3072, len(HBAT_bf_delays))                             # 96x32=3072