- Add tests for log.py

- Modify log levels to be lower case

src/log.py

@@ -11,16 +11,16 @@ def __init__(self, log_level_str: str):
         self.logger = self.initialize_logging()
 
     def get_log_level(self, log_level: str) -> int:
-        log_level = log_level.upper()
-
-        if log_level == "DEBUG":
+        if log_level == "debug":
             log_level = logging.DEBUG
-        elif log_level == "INFO":
+        elif log_level == "info":
             log_level = logging.INFO
-        elif log_level == "WARNING":
+        elif log_level == "warn":
             log_level = logging.WARNING
-        else:
+        elif log_level == 'error':
             log_level = logging.ERROR
+        else:
+            raise ValueError("Invalid logger level specified: {}".format(log_level))
 
         return log_level
 

src/tests/test_log.py

@@ -0,0 +1,32 @@
+"""
+Tests for the Logging class.
+"""
+import pytest
+
+# Astro modules
+from src.log import Logger
+
+
+class TestLogging:
+    @pytest.mark.parametrize('level', ['debug', 'info', 'warn', 'error', 'asdf'])
+    def test_get_log_level(self, level):
+        valid_levels = ['debug', 'info', 'warn', 'error']
+
+        if level in valid_levels:
+            logger = Logger(level)
+            log_level = logger.get_log_level(level)
+
+            if level == 'debug':
+                assert log_level == 10
+            elif level == 'info':
+                assert log_level == 20
+            elif level == 'warn':
+                assert log_level == 30
+            elif level == 'error':
+                assert log_level == 40
+
+        else:  # should assert error if invalid log level specified
+            with pytest.raises(ValueError) as exception:
+                logger = Logger(level)  # this will call get_log_level()
+
+            assert str(exception.value) == "Invalid logger level specified: {}".format(level)