test: update tests for new --version handling

Author: xmatthias

tests/test_arguments.py

@@ -82,8 +82,8 @@ def test_common_scripts_options() -> None:
 
 
 def test_parse_args_version() -> None:
-    with pytest.raises(SystemExit, match=r"0"):
-        Arguments(["--version"]).get_parsed_arg()
+    args = Arguments(["--version"]).get_parsed_arg()
+    assert args["version_main"] is True
 
 
 def test_parse_args_invalid() -> None:

tests/test_main.py

@@ -1,5 +1,6 @@
 # pragma pylint: disable=missing-docstring
 
+import re
 from copy import deepcopy
 from pathlib import Path
 from unittest.mock import MagicMock, PropertyMock
@@ -26,6 +27,14 @@ def test_parse_args_None(caplog) -> None:
     assert log_has_re(r"Usage of Freqtrade requires a subcommand.*", caplog)
 
 
+def test_parse_args_version(capsys) -> None:
+    with pytest.raises(SystemExit):
+        main(["-V"])
+    captured = capsys.readouterr()
+    assert re.search(r"CCXT Version:\s.*", captured.out, re.MULTILINE)
+    assert re.search(r"Freqtrade Version:\s+freqtrade\s.*", captured.out, re.MULTILINE)
+
+
 def test_parse_args_backtesting(mocker) -> None:
     """
     Test that main() can start backtesting and also ensure we can pass some specific arguments