batch extract faces on single image special case

tests/test_extract_faces.py

@@ -207,6 +207,16 @@ def test_batch_extract_faces_with_nparray(detector_backend):
         )
 
 
+def test_batch_extract_faces_single_image():
+    img_path = "dataset/couple.jpg"
+    imgs_objs_batch = DeepFace.extract_faces(
+        img_path=[img_path],
+        align=True,
+    )
+    assert len(imgs_objs_batch) == 2
+    assert [isinstance(obj, dict) for obj in imgs_objs_batch]
+
+
 def test_backends_for_enforced_detection_with_non_facial_inputs():
     black_img = np.zeros([224, 224, 3])
     for detector in detectors: