implement bot reconfiguration and expose it to telegram

freqtrade/tests/test_main.py

@@ -3,12 +3,16 @@ Unit test file for main.py
 """
 
 import logging
+from copy import deepcopy
 from unittest.mock import MagicMock
 
 import pytest
 
 from freqtrade import OperationalException
-from freqtrade.main import main, set_loggers
+from freqtrade.arguments import Arguments
+from freqtrade.freqtradebot import FreqtradeBot
+from freqtrade.main import main, set_loggers, reconfigure
+from freqtrade.state import State
 from freqtrade.tests.conftest import log_has
 
 
@@ -140,3 +144,69 @@ def test_main_operational_exception(mocker, default_conf, caplog) -> None:
         main(args)
     assert log_has('Using config: config.json.example ...', caplog.record_tuples)
     assert log_has('Oh snap!', caplog.record_tuples)
+
+
+def test_main_reload_conf(mocker, default_conf, caplog) -> None:
+    """
+    Test main() function
+    In this test we are skipping the while True loop by throwing an exception.
+    """
+    mocker.patch.multiple(
+        'freqtrade.freqtradebot.FreqtradeBot',
+        _init_modules=MagicMock(),
+        worker=MagicMock(return_value=State.RELOAD_CONF),
+        cleanup=MagicMock(),
+    )
+    mocker.patch(
+        'freqtrade.configuration.Configuration._load_config_file',
+        lambda *args, **kwargs: default_conf
+    )
+    mocker.patch('freqtrade.freqtradebot.CryptoToFiatConverter', MagicMock())
+    mocker.patch('freqtrade.freqtradebot.RPCManager', MagicMock())
+
+    # Raise exception as side effect to avoid endless loop
+    reconfigure_mock = mocker.patch(
+        'freqtrade.main.reconfigure', MagicMock(side_effect=Exception)
+    )
+
+    with pytest.raises(SystemExit):
+        main(['-c', 'config.json.example'])
+
+    assert reconfigure_mock.call_count == 1
+    assert log_has('Using config: config.json.example ...', caplog.record_tuples)
+
+
+def test_reconfigure(mocker, default_conf) -> None:
+    """ Test recreate() function """
+    mocker.patch.multiple(
+        'freqtrade.freqtradebot.FreqtradeBot',
+        _init_modules=MagicMock(),
+        worker=MagicMock(side_effect=OperationalException('Oh snap!')),
+        cleanup=MagicMock(),
+    )
+    mocker.patch(
+        'freqtrade.configuration.Configuration._load_config_file',
+        lambda *args, **kwargs: default_conf
+    )
+    mocker.patch('freqtrade.freqtradebot.CryptoToFiatConverter', MagicMock())
+    mocker.patch('freqtrade.freqtradebot.RPCManager', MagicMock())
+
+    freqtrade = FreqtradeBot(default_conf)
+
+    # Renew mock to return modified data
+    conf = deepcopy(default_conf)
+    conf['stake_amount'] += 1
+    mocker.patch(
+        'freqtrade.configuration.Configuration._load_config_file',
+        lambda *args, **kwargs: conf
+    )
+
+    # reconfigure should return a new instance
+    freqtrade2 = reconfigure(
+        freqtrade,
+        Arguments(['-c', 'config.json.example'], '').get_parsed_arg()
+    )
+
+    # Verify we have a new instance with the new config
+    assert freqtrade is not freqtrade2
+    assert freqtrade.config['stake_amount'] + 1 == freqtrade2.config['stake_amount']