Move Backtesting to a class and add unit tests

freqtrade/tests/test_logger.py

@@ -26,11 +26,12 @@ def test_logger_object() -> None:
 
 def test_get_logger() -> None:
     """
-    Test logger.get_logger()
+    Test Logger.get_logger() and Logger._init_logger()
     :return: None
     """
-    logger = Logger(name='Foo', level=logging.WARNING)
+    logger = Logger(name='get_logger', level=logging.WARNING)
     get_logger = logger.get_logger()
+    assert logger.logger is get_logger
     assert get_logger is not None
     assert hasattr(get_logger, 'debug')
     assert hasattr(get_logger, 'info')
@@ -39,15 +40,57 @@ def test_get_logger() -> None:
     assert hasattr(get_logger, 'exception')
 
 
+def test_set_name() -> None:
+    """
+    Test Logger.set_name()
+    :return: None
+    """
+    logger = Logger(name='set_name')
+    assert logger.name == 'set_name'
+
+    logger.set_name('set_name_new')
+    assert logger.name == 'set_name_new'
+
+
+def test_set_level() -> None:
+    """
+    Test Logger.set_name()
+    :return: None
+    """
+    logger = Logger(name='Foo', level=logging.WARNING)
+    assert logger.level == logging.WARNING
+    assert logger.get_logger().level == logging.WARNING
+
+    logger.set_level(logging.INFO)
+    assert logger.level == logging.INFO
+    assert logger.get_logger().level == logging.INFO
+
+
 def test_sending_msg(caplog) -> None:
     """
     Test send a logging message
     :return: None
     """
-    logger = Logger(name='FooBar', level=logging.WARNING).get_logger()
+    logger = Logger(name='sending_msg', level=logging.WARNING).get_logger()
 
     logger.info('I am an INFO message')
-    assert('FooBar', logging.INFO, 'I am an INFO message') not in caplog.record_tuples
+    assert('sending_msg', logging.INFO, 'I am an INFO message') not in caplog.record_tuples
 
     logger.warning('I am an WARNING message')
-    assert ('FooBar', logging.WARNING, 'I am an WARNING message') in caplog.record_tuples
+    assert ('sending_msg', logging.WARNING, 'I am an WARNING message') in caplog.record_tuples
+
+
+def test_set_format(caplog) -> None:
+    """
+    Test Logger.set_format()
+    :return: None
+    """
+    log = Logger(name='set_format')
+    logger = log.get_logger()
+
+    logger.info('I am the first message')
+    assert ('set_format', logging.INFO, 'I am the first message') in caplog.record_tuples
+
+    log.set_format(log_format='%(message)s', propagate=True)
+    logger.info('I am the second message')
+    assert ('set_format', logging.INFO, 'I am the second message') in caplog.record_tuples