Add comment in fixed unit test. Add retry limit.

tests/benchmarks/scenarios/test_task_aware.py

@@ -16,7 +16,8 @@ class TestsTaskAware(unittest.TestCase):
     def test_taskaware(self):
         """Common use case: add tas labels to class-incremental benchmark."""
         n_classes, n_samples_per_class, n_features = 10, 3, 7
-        while True:
+
+        for _ in range(10000):
             dataset = make_classification(
                 n_samples=n_classes * n_samples_per_class,
                 n_classes=n_classes,
@@ -25,6 +26,9 @@ def test_taskaware(self):
                 n_redundant=0,
             )
 
+            # The following check is required to ensure that at least 2 exemplars
+            # per class are generated. Otherwise, the train_test_split function will
+            # fail.
             _, unique_count = np.unique(dataset[1], return_counts=True)
             if np.min(unique_count) > 1:
                 break