Add test for no model case

Author: acampove

tests/stats/test_stats_utilities.py

@@ -253,6 +253,20 @@ def test_save_fit_param():
         plt_cfg={'nbins' : 50, 'stacked' : True},
         fit_dir=f'{Data.fit_dir}/save_fit/parametric')
 #----------------------------------
+def test_save_fit_nomodel():
+    '''
+    Tests saving fit without model 
+    '''
+    pdf = _get_pdf(kind='simple')
+    dat = pdf.create_sampler(n=1000)
+
+    sut.save_fit(
+        data   =dat,
+        model  =None,
+        res    =None,
+        plt_cfg={'nbins' : 50, 'stacked' : True},
+        fit_dir=f'{Data.fit_dir}/save_fit/parametric')
+#----------------------------------
 def test_save_fit_nonparam():
     '''
     Tests saving fit without parameters