Fix issues with long testing times on Windows caused by log rotation from multiple threads

flow360/log.py

@@ -69,15 +69,16 @@ def __init__(
         self.level = _get_level_int(level)
         self.console = console
         self.backup_count = 10
-        self.max_bytes = 10000
+        self.max_bytes = 1000000
         self.fname = fname
         self.previous_logged_time = None
         self.previous_logged_version = None
+        self.is_rotating = True
 
     def handle(self, level, level_name, message, log_time=False):
         """Output log messages depending on log level"""
         try:
-            if self.fname is not None and self.should_roll_over(message):
+            if self.fname is not None and self.is_rotating and self.should_roll_over(message):
                 self.do_roll_over()
         except OSError as error:
             self.console.log(
@@ -289,7 +290,7 @@ def set_logging_file(
     filemode: str = "a",
     level: LogValue = DEFAULT_LEVEL,
     back_up_count: int = 10,
-    max_bytes: int = 10000,
+    max_bytes: int = 1000000,
 ) -> None:
     """Set a file to write log to, independently from the stdout and stderr
     output chosen using :meth:`set_logging_level`.
@@ -302,6 +303,10 @@ def set_logging_file(
     level : str
         One of ``{'DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'}``. This is set for the file
         independently of the console output level set by :meth:`set_logging_level`.
+    back_up_count : int
+        How many backup log files are preserved when rotating log files
+    max_bytes : int
+        Maximum log file size in bytes before a log rotation is performed
     """
     if filemode not in "wa":
         raise ValueError("filemode must be either 'w' or 'a'")

tests/conftest.py

@@ -0,0 +1,32 @@
+import os
+import tempfile
+
+import pytest
+
+from flow360.file_path import flow360_dir
+from flow360.log import log, set_logging_file
+
+"""
+Before running all tests redirect all test logging to a temporary log file, turn off log rotation 
+due to multi-threaded rotation being unsupported at this time
+"""
+
+
+def pytest_configure():
+    fo = tempfile.NamedTemporaryFile()
+    pytest.tmp_log_file = fo.name
+    pytest.log_test_file = os.path.join(flow360_dir, "logs", "flow360_log_test.log")
+    if os.path.exists(pytest.log_test_file):
+        os.remove(pytest.log_test_file)
+    set_logging_file(fo.name, level="DEBUG")
+
+
+@pytest.fixture
+def before_log_test():
+    set_logging_file(pytest.log_test_file, level="DEBUG")
+
+
+@pytest.fixture
+def after_log_test():
+    yield
+    set_logging_file(pytest.tmp_log_file, level="DEBUG")

tests/test_log.py

@@ -1,28 +1,33 @@
-import os
+import pytest
 
 from flow360.log import Logger, log, set_logging_level
 
 
+@pytest.mark.usefixtures("before_log_test", "after_log_test")
 def test_debug():
     log.debug("Debug log")
     log.debug("Debug log string %s, number %d", "arg", 1)
 
 
+@pytest.mark.usefixtures("before_log_test", "after_log_test")
 def test_info():
     log.info("Basic info")
     log.info("Basic info string %s, number %d", "arg", 1)
 
 
+@pytest.mark.usefixtures("before_log_test", "after_log_test")
 def test_warning():
     log.warning("Warning log")
     log.warning("Warning log string %s, number %d", "arg", 1)
 
 
+@pytest.mark.usefixtures("before_log_test", "after_log_test")
 def test_error():
     log.error("Error log")
     log.error("Error log string %s, number %d", "arg", 1)
 
 
+@pytest.mark.usefixtures("before_log_test", "after_log_test")
 def test_critical():
     log.critical("Critical log string %s, number %d", "arg", 1)