test: add test cases

ref: N25B-401

test/unit/logging/test_dated_file_handler.py

@@ -0,0 +1,45 @@
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+from control_backend.logging.dated_file_handler import DatedFileHandler
+
+
+@patch("control_backend.logging.dated_file_handler.DatedFileHandler._open")
+def test_reset(open_):
+    stream = MagicMock()
+    open_.return_value = stream
+
+    # A file should be opened when the logger is created
+    handler = DatedFileHandler(file_prefix="anything")
+    assert open_.call_count == 1
+
+    # Upon reset, the current file should be closed, and a new one should be opened
+    handler.do_rollover()
+    assert stream.close.call_count == 1
+    assert open_.call_count == 2
+
+
+@patch("control_backend.logging.dated_file_handler.Path")
+@patch("control_backend.logging.dated_file_handler.DatedFileHandler._open")
+def test_creates_dir(open_, Path_):
+    stream = MagicMock()
+    open_.return_value = stream
+
+    test_path = MagicMock()
+    test_path.parent.is_dir.return_value = False
+    Path_.return_value = test_path
+
+    DatedFileHandler(file_prefix="anything")
+
+    # The directory should've been created
+    test_path.parent.mkdir.assert_called_once()
+
+
+@patch("control_backend.logging.dated_file_handler.DatedFileHandler._open")
+def test_invalid_constructor(_):
+    with pytest.raises(ValueError):
+        DatedFileHandler(file_prefix=None)
+
+    with pytest.raises(ValueError):
+        DatedFileHandler(file_prefix="")

test/unit/logging/test_file_handler.py

@@ -1,18 +0,0 @@
-from unittest.mock import MagicMock, patch
-
-from control_backend.logging.dated_file_handler import DatedFileHandler
-
-
-@patch("control_backend.logging.file_handler.DatedFileHandler._open")
-def test_reset(open_):
-    stream = MagicMock()
-    open_.return_value = stream
-
-    # A file should be opened when the logger is created
-    handler = DatedFileHandler(prefix="anything")
-    assert open_.call_count == 1
-
-    # Upon reset, the current file should be closed, and a new one should be opened
-    handler.do_rollover()
-    assert stream.close.call_count == 1
-    assert open_.call_count == 2