Fix tests

Author: wouterpeere

CHANGELOG.md

@@ -4,7 +4,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [0.0.1] - 2025-07-18
 
-## Added
+### Added
 
 - First release of `pyTRT` with ILS method.
 

test/test_load_data.py

@@ -15,8 +15,11 @@ def test_value_errors_trt():
         TRTData(FOLDER.parent.joinpath("examples/data/Linz.csv"), 't [s]', 'Tf [degC]', decimal=',', )
     with pytest.raises(ValueError):
         TRTData(FOLDER.parent.joinpath("examples/data/Linz.csv"), 't [s]', decimal=',')
-        with pytest.raises(ValueError):
-            TRTData(FOLDER.parent.joinpath("examples/data/Linz.csv"), 't [s]', col_temp_in='Tf [degC]', decimal=',')
+    with pytest.raises(ValueError):
+        TRTData(FOLDER.parent.joinpath("examples/data/Linz.csv"), 't [s]', col_temp_in='Tf [degC]', decimal=',')
+    with pytest.raises(ValueError):
+        TRTData(FOLDER.parent.joinpath("examples/data/Linz.csv"), 't [s]', 'Tf [degC]', 'Tf [degC]', 'Tf [degC]',
+                decimal=',')
 
 
 def test_p_average():