test inv response for a mb scan request

app/tests/test_solarman.py

@@ -709,6 +709,19 @@ def msg_modbus_rsp():  # 0x1510
     msg += b'\x15'
     return msg
 
+@pytest.fixture
+def msg_modbus_rsp_mb_4():  # 0x1510, MODBUS Type:4
+    msg  = b'\xa5\x3b\x00\x10\x15\x03\x03' +get_sn()  +b'\x02\x01'
+    msg += total()  
+    msg += hb()
+    msg += b'\x0a\xe2\xfa\x33\x01\x04\x28\x40\x10\x08\xd8'
+    msg += b'\x00\x00\x13\x87\x00\x31\x00\x68\x02\x58\x00\x00\x01\x53\x00\x02'
+    msg += b'\x00\x00\x01\x52\x00\x02\x00\x00\x01\x53\x00\x03\x00\x00\x00\x04'
+    msg += b'\x00\x01\x00\x00\x9e\xa4'
+    msg += correct_checksum(msg)
+    msg += b'\x15'
+    return msg
+
 @pytest.fixture
 def msg_modbus_interim_rsp():  # 0x0510
     msg  = b'\xa5\x3b\x00\x10\x15\x03\x03' +get_sn()  +b'\x02\x01'
@@ -2241,6 +2254,61 @@ async def test_modbus_scaning(config_tsun_scan, heartbeat_ind_msg, heartbeat_rsp
     assert next(m.mb_timer.exp_count) == 3
     m.close()
 
+@pytest.mark.asyncio
+async def test_modbus_scaning_inv_rsp(config_tsun_scan, heartbeat_ind_msg, heartbeat_rsp_msg, msg_modbus_rsp_mb_4):
+    _ = config_tsun_scan
+    assert asyncio.get_running_loop()
+
+    m = MemoryStream(heartbeat_ind_msg, (0x15,0x56,0))
+    m.append_msg(msg_modbus_rsp_mb_4)
+    assert m.mb_scan == False
+    assert asyncio.get_running_loop() == m.mb_timer.loop
+    m.db.stat['proxy']['Unknown_Ctrl'] = 0
+    assert m.mb_timer.tim == None
+    m.read()         # read complete msg, and dispatch msg
+    assert m.mb_scan == True
+    assert m.mb_start_reg == 0xff80
+    assert m.mb_step == 0x40
+    assert m.mb_bytes == 0x14
+    assert asyncio.get_running_loop() == m.mb_timer.loop
+ 
+    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
+    assert m.msg_count == 1
+    assert m.snr == 2070233889
+    assert m.control == 0x4710
+     
+    assert m.msg_recvd[0]['control']==0x4710
+    assert m.msg_recvd[0]['seq']=='84:11'
+    assert m.msg_recvd[0]['data_len']==0x1
+
+    assert m.ifc.tx_fifo.get()==heartbeat_rsp_msg
+    assert m.ifc.fwd_fifo.get()==heartbeat_ind_msg
+    assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
+
+    m.ifc.tx_clear() # clear send buffer for next test
+    assert isclose(m.mb_timeout, 0.5)
+    assert next(m.mb_timer.exp_count) == 0
+    
+    await asyncio.sleep(0.5)
+    assert m.sent_pdu==b'\xa5\x17\x00\x10E\x12\x84!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00' \
+                       b'\x00\x00\x00\x00\x00\x00\x01\x03\xff\xc0\x00\x14\x75\xed\x33\x15'
+    assert m.ifc.tx_fifo.get()==b''
+
+    m.read()         # read complete msg, and dispatch msg
+    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
+    assert m.msg_count == 2
+    assert m.msg_recvd[1]['control']==0x1510
+    assert m.msg_recvd[1]['seq']=='03:03'
+    assert m.msg_recvd[1]['data_len']==0x3b
+    assert m.mb.last_addr == 1
+    assert m.mb.last_fcode == 3   
+    assert m.mb.last_reg == 0xffc0   # mb_start_reg + mb_step
+    assert m.mb.last_len == 20
+    assert m.mb.err == 3
+
+    assert next(m.mb_timer.exp_count) == 2
+    m.close()
+
 @pytest.mark.asyncio
 async def test_start_client_mode(my_loop, config_tsun_inv1, str_test_ip):
     _ = config_tsun_inv1