✅ Add test to reset logger filters. (#827)

- Logger filters need to be reset at the start of run. This is required if a failed test with logs is run in another pytest.
- This PR fixes [failed tests](https://github.com/TissueImageAnalytics/tiatoolbox/actions/runs/9414105193/job/25932262521) in #783.

Author: shaneahmed

tests/test_annotation_stores.py

@@ -27,6 +27,7 @@
     Polygon,
 )
 
+from tiatoolbox import logger
 from tiatoolbox.annotation import (
     Annotation,
     AnnotationStore,
@@ -52,6 +53,14 @@
 FILLED_LEN = 2 * (GRID_SIZE[0] * GRID_SIZE[1])
 RNG = np.random.default_rng(0)  # Numpy Random Generator
 
+# ----------------------------------------------------------------------
+# Resets
+# ----------------------------------------------------------------------
+
+# Reset filters in logger.
+for filter_ in logger.filters:
+    logger.removeFilter(filter_)
+
 # ----------------------------------------------------------------------
 # Helper Functions
 # ----------------------------------------------------------------------

tests/test_init.py

@@ -109,6 +109,14 @@ def test_logger_output() -> None:
 
 def test_duplicate_filter(caplog: pytest.LogCaptureFixture) -> None:
     """Test DuplicateFilter for warnings."""
+    # Test logger reset after applying duplicate filter.
+    duplicate_filter = DuplicateFilter()
+    logger.addFilter(duplicate_filter)
+
+    # Reset filters in logger.
+    for filter_ in logger.filters:
+        logger.removeFilter(filter_)
+
     for _ in range(2):
         logger.warning("Test duplicate filter warnings.")
     assert "Test duplicate filter warnings." in caplog.text