tests: add logging and logging once tests

tests/test_logger.py

@@ -0,0 +1,35 @@
+import logging
+
+import pytest
+
+from ecologits.log import logger
+
+
+@pytest.mark.parametrize("logging_func", [
+    logger.debug,
+    logger.info,
+    logger.warning,
+    logger.error,
+    logger.critical
+])
+def test_logging(caplog, logging_func):
+    with caplog.at_level(logging.DEBUG, logger="ecologits"):
+        logging_func("test")
+        assert "test" in caplog.text
+
+
+@pytest.mark.parametrize("logging_func", [
+    logger.debug_once,
+    logger.info_once,
+    logger.warning_once,
+    logger.error_once,
+    logger.critical_once
+])
+def test_logging_once(caplog, logging_func):
+    with caplog.at_level(logging.DEBUG, logger="ecologits"):
+        logging_func(f"test({logging_func.__name__})")
+        logging_func(f"test({logging_func.__name__})")  # This shouldn't be logged
+        logging_func(f"test2({logging_func.__name__})")
+        assert len(caplog.records) == 2
+        assert "test" in caplog.text
+        assert "test2" in caplog.text