Add tests and fix import issues for WSJT-X/JS8Call

Co-authored-by: SpudGunMan <12676665+SpudGunMan@users.noreply.github.com>

modules/radio.py

@@ -267,6 +267,10 @@ async def voxMonitor():
 # Based on WSJT-X UDP protocol specification
 # Reference: https://github.com/ckuhtz/ham/blob/main/mcast/recv_decode.py
 
+import socket
+import struct
+import json
+
 wsjtx_enabled = False
 js8call_enabled = False
 wsjtx_udp_port = 2237
@@ -289,8 +293,6 @@ try:
     js8call_enabled = js8call_detection_enabled
     
     if wsjtx_enabled:
-        import socket
-        import struct
         # Parse UDP address
         if ':' in wsjtx_udp_server_address:
             wsjtx_udp_address, port_str = wsjtx_udp_server_address.split(':')
@@ -298,8 +300,6 @@ try:
         watched_callsigns.extend(wsjtx_watched_callsigns.split(',') if wsjtx_watched_callsigns else [])
         
     if js8call_enabled:
-        import socket
-        import json
         # Parse TCP address for JS8Call
         if ':' in js8call_server_address:
             js8call_tcp_address, port_str = js8call_server_address.split(':')

modules/test_bot.py

@@ -421,6 +421,29 @@ class TestBot(unittest.TestCase):
             flood_report = get_flood_openmeteo(lat, lon)
             self.assertIsInstance(flood_report, str)
 
+    def test_check_callsign_match(self):
+        # Test the callsign filtering function for WSJT-X/JS8Call
+        from radio import check_callsign_match
+        
+        # Test with empty filter (should match all)
+        self.assertTrue(check_callsign_match("CQ K7MHI CN87", []))
+        
+        # Test exact match
+        self.assertTrue(check_callsign_match("CQ K7MHI CN87", ["K7MHI"]))
+        
+        # Test case insensitive match
+        self.assertTrue(check_callsign_match("CQ k7mhi CN87", ["K7MHI"]))
+        self.assertTrue(check_callsign_match("CQ K7MHI CN87", ["k7mhi"]))
+        
+        # Test no match
+        self.assertFalse(check_callsign_match("CQ W1AW FN31", ["K7MHI"]))
+        
+        # Test multiple callsigns
+        self.assertTrue(check_callsign_match("CQ W1AW FN31", ["K7MHI", "W1AW"]))
+        self.assertTrue(check_callsign_match("K7MHI DE W1AW", ["K7MHI", "W1AW"]))
+        
+        print("Callsign filtering tests passed")
+