diff --git a/.coverage b/.coverage
index c63ebc4625ea65bb7e2925481b98b8f4036efd59..79d0a9dc4438303df4354b7f7e0d25d4aa2e31ef 100644
Binary files a/.coverage and b/.coverage differ
diff --git a/src/test_dataset.py b/src/test_dataset.py
index 97cad41e669712c9f6cc96d1a0fda3e99b2b71fa..87d66df7520e34c29d51cdab50eecfe5d1580823 100644
--- a/src/test_dataset.py
+++ b/src/test_dataset.py
@@ -100,6 +100,8 @@ def test_catch_non_dataframe(the_dataset: Dataset, param):
         the_dataset.get_combined_anxiety_score(param)
     with pytest.raises(ValueError):
         the_dataset.get_is_narcissist_col(param)
+    with pytest.raises(ValueError):
+        the_dataset.treat_outliers(True, "GAD_T")
 
 
 @pytest.mark.parametrize(
@@ -138,6 +140,9 @@ def test_catch_colname_not_in_df(the_dataset: Dataset):
     with pytest.raises(KeyError):
         the_dataset.get_sorted_column("GAAAD_T")
 
+    with pytest.raises(KeyError):
+        the_dataset.treat_outliers(the_dataset.get_dataframe(), "GAAAD_T")
+
 
 def test_catch_colname_not_string(the_dataset: Dataset):
     """Tests that functions that take colname correctly
@@ -148,3 +153,5 @@ def test_catch_colname_not_string(the_dataset: Dataset):
         the_dataset.get_sorted_column(True)
     with pytest.raises(ValueError):
         the_dataset.get_unique_column_values(True)
+    with pytest.raises(ValueError):
+        the_dataset.treat_outliers(the_dataset.get_dataframe(), True)
diff --git a/src/test_plotter.py b/src/test_plotter.py
index 75441fca070aefd405cf817240b7ff8b9947b322..daf8bdc3051c391154c0286e0f39e41243c8832c 100644
--- a/src/test_plotter.py
+++ b/src/test_plotter.py
@@ -34,6 +34,18 @@ def test_catch_colname_not_in_df(the_plotter: Plotter):
     catch colnames not in dataset."""
     with pytest.raises(KeyError):
         the_plotter.distribution_plot("GAAAD_T")
+    with pytest.raises(KeyError):
+        the_plotter.plot_categorical_bar_chart("bad_col", "GAD_T")
+    with pytest.raises(KeyError):
+        the_plotter.plot_categorical_bar_chart("GAD_T", "bad_col")
+    with pytest.raises(KeyError):
+        the_plotter.plot_categorical_histplot("bad_col", "GAD_T")
+    with pytest.raises(KeyError):
+        the_plotter.plot_categorical_histplot("GAD_T", "bad_col")
+    with pytest.raises(KeyError):
+        the_plotter.plot_scatterplot("bad_col", "GAD_T")
+    with pytest.raises(KeyError):
+        the_plotter.plot_scatterplot("GAD_T", "bad_col")
 
 
 def test_catch_target_not_string(the_plotter: Plotter):
@@ -46,28 +58,16 @@ def test_catch_target_not_string(the_plotter: Plotter):
         the_plotter.plot_categorical_bar_chart(True, "GAD_T")
     with pytest.raises(ValueError):
         the_plotter.plot_categorical_bar_chart("GAD_T", True)
-    with pytest.raises(ValueError):
-        the_plotter.plot_categorical_bar_chart("GAD_TT", "GAD_T")
-    with pytest.raises(ValueError):
-        the_plotter.plot_categorical_bar_chart("GAD_T", "GAD_TT")
 
     with pytest.raises(ValueError):
         the_plotter.plot_categorical_histplot(True, "GAD_T")
     with pytest.raises(ValueError):
         the_plotter.plot_categorical_histplot("GAD_T", True)
-    with pytest.raises(ValueError):
-        the_plotter.plot_categorical_histplot("GAD_TT", "GAD_T")
-    with pytest.raises(ValueError):
-        the_plotter.plot_categorical_histplot("GAD_T", "GAD_TT")
 
     with pytest.raises(ValueError):
         the_plotter.plot_scatterplot(True, "GAD_T")
     with pytest.raises(ValueError):
         the_plotter.plot_scatterplot("GAD_T", True)
-    with pytest.raises(ValueError):
-        the_plotter.plot_scatterplot("GAD_TT", "GAD_T")
-    with pytest.raises(ValueError):
-        the_plotter.plot_scatterplot("GAD_T", "GAD_TT")
 
 
 @pytest.mark.parametrize(
@@ -105,7 +105,7 @@ def test_distribution_plot(the_plotter: Plotter):
 
 
 def test_plot_categorical_bar_chart(the_plotter: Plotter):
-    the_plotter.plot_categorical_bar_chart("GAD_T", "SWL_T")
+    the_plotter.plot_categorical_bar_chart("whyplay", "SWL_T")
     assert True