remove test_fit_empty, probably shouldn't be one interface behaviour …

…in this instance.

src/python/gudhi/representations/vector_methods.py

@@ -821,7 +821,7 @@ def fit(self, X, y=None, sample_weight=None):
         filtered_weights_concat = weights_concat[~np.isinf(measures_concat).any(axis=1)] if len(measures_concat) else weights_concat
         n_points = len(filtered_measures_concat)
         if not n_points:
-            raise Exception("Cannot fit Atol on empty target.")
+            raise Exception("Cannot fit Atol on measure with infinite components only.")
 
         if n_points < n_clusters:
             # If not enough points to fit (including 0), we will arbitrarily put centers as [-np.inf]^measure_dim at the end.

src/python/test/test_representations_interface.py

@@ -46,13 +46,6 @@ def test_fit():
         clone(vectorizer).fit(X=[diag1[0], diag2[0]])
 
 
-def test_fit_empty():
-    print(f" > Testing `fit_empty`.")
-    for name, vectorizer in vectorizers.items():
-        print(f" >> Testing {name}")
-        clone(vectorizer).fit(X=[diag3[0], diag3[0]])
-
-
 def test_transform():
     print(f" > Testing `transform`.")
     for name, vectorizer in vectorizers.items():