add argparse handling tests

freqtrade/tests/test_misc.py

@@ -1,7 +1,11 @@
 # pragma pylint: disable=missing-docstring
 import time
+from argparse import Namespace
+from unittest.mock import MagicMock
 
-from freqtrade.misc import throttle
+import pytest
+
+from freqtrade.misc import throttle, parse_args, start_backtesting
 
 
 def test_throttle():
@@ -18,3 +22,99 @@ def test_throttle():
 
     result = throttle(func, -1)
     assert result == 42
+
+
+def test_parse_args_defaults():
+    args = parse_args([])
+    assert args is not None
+    assert args.config == 'config.json'
+    assert args.dynamic_whitelist is False
+    assert args.loglevel == 20
+
+
+def test_parse_args_invalid():
+    with pytest.raises(SystemExit, match=r'2'):
+        parse_args(['-c'])
+
+
+def test_parse_args_config():
+    args = parse_args(['-c', '/dev/null'])
+    assert args is not None
+    assert args.config == '/dev/null'
+
+    args = parse_args(['--config', '/dev/null'])
+    assert args is not None
+    assert args.config == '/dev/null'
+
+
+def test_parse_args_verbose():
+    args = parse_args(['-v'])
+    assert args is not None
+    assert args.loglevel == 10
+
+
+def test_parse_args_dynamic_whitelist():
+    args = parse_args(['--dynamic-whitelist'])
+    assert args is not None
+    assert args.dynamic_whitelist is True
+
+
+def test_parse_args_backtesting(mocker):
+    backtesting_mock = mocker.patch('freqtrade.misc.start_backtesting', MagicMock())
+    args = parse_args(['backtesting'])
+    assert args is None
+    assert backtesting_mock.call_count == 1
+
+    call_args = backtesting_mock.call_args[0][0]
+    assert call_args.config == 'config.json'
+    assert call_args.live is False
+    assert call_args.loglevel == 20
+    assert call_args.subparser == 'backtesting'
+    assert call_args.func is not None
+    assert call_args.ticker_interval == 5
+
+
+def test_parse_args_backtesting_invalid():
+    with pytest.raises(SystemExit, match=r'2'):
+        parse_args(['--ticker-interval'])
+
+    with pytest.raises(SystemExit, match=r'2'):
+        parse_args(['--ticker-interval', 'abc'])
+
+
+def test_parse_args_backtesting_custom(mocker):
+    backtesting_mock = mocker.patch('freqtrade.misc.start_backtesting', MagicMock())
+    args = parse_args(['-c', 'test_conf.json', 'backtesting', '--live', '--ticker-interval', '1'])
+    assert args is None
+    assert backtesting_mock.call_count == 1
+
+    call_args = backtesting_mock.call_args[0][0]
+    assert call_args.config == 'test_conf.json'
+    assert call_args.live is True
+    assert call_args.loglevel == 20
+    assert call_args.subparser == 'backtesting'
+    assert call_args.func is not None
+    assert call_args.ticker_interval == 1
+
+
+def test_start_backtesting(mocker):
+    pytest_mock = mocker.patch('pytest.main', MagicMock())
+    env_mock = mocker.patch('os.environ', {})
+    args = Namespace(
+        config='config.json',
+        live=True,
+        loglevel=20,
+        ticker_interval=1,
+    )
+    start_backtesting(args)
+    assert env_mock == {
+        'BACKTEST': 'true',
+        'BACKTEST_LIVE': 'true',
+        'BACKTEST_CONFIG': 'config.json',
+        'BACKTEST_TICKER_INTERVAL': '1',
+    }
+    assert pytest_mock.call_count == 1
+
+    main_call_args = pytest_mock.call_args[0][0]
+    assert main_call_args[0] == '-s'
+    assert main_call_args[1].endswith('freqtrade/tests/test_backtesting.py')