added some simple tests

tangostationcontrol/tangostationcontrol/beam/test_delays.py

 from delays import *
+import pprint
 
 if __name__ == '__main__':
     # # create a frame tied to the reference position
@@ -19,5 +20,47 @@ if __name__ == '__main__':
     delays = d.convert(direction, antenna_itrf)
 
     # print the delays
-    import pprint
-    pprint.pprint(delays)
+    # pprint.pprint(delays)
+
+
+    #test changing the time
+
+    print(f"Changing timestamp test\nBase parametres: Direction: {direction}, position: {antenna_itrf}")
+    for i in range(10):
+        # # set the timestamp to solve for
+        timestamp = datetime.datetime(2021,1,1,0,i,5)
+        d.set_measure_time(timestamp)
+
+        delays = d.convert(direction, antenna_itrf)
+
+        # print the delays
+        print(f"Timestamp: {timestamp}:   {delays}")
+
+
+    # reset time
+    timestamp = datetime.datetime(2021, 1, 1, 0, 0, 5)
+    d.set_measure_time(timestamp)
+
+
+    #test changing the antenna position
+    print(f"Changing Antenna position test.\nBase parametres: Time: {timestamp} Direction: {direction}")
+    for i in range(10):
+        antenna_itrf = [[3826577.066 + i, 461022.948, 5064892.786]]  # CS002LBA, in ITRF2005 epoch 2012.5
+
+        delays = d.convert(direction, antenna_itrf)
+
+        # print the delays
+        print(f"Antenna position: {antenna_itrf}:   {delays}")
+
+    # test changing the direction
+
+    antenna_itrf = [[3826923.546, 460915.441, 5064643.489]]  # CS001LBA, in ITRF2005 epoch 2012.5
+    print(f"Changing direction test.\nBase parametres: Time: {timestamp} , position: {antenna_itrf}")
+
+    for i in range(10):
+        direction = "J2000", f"{i}deg", "0deg"
+
+        delays = d.convert(direction, antenna_itrf)
+
+        # print the delays
+        print(f"Direction: {direction}:  {delays}")