diff --git a/test/unit/data/datatypes/test_h5ad_metadata.py b/test/unit/data/datatypes/test_h5ad_metadata.py
index 4ffc4da51420..bfbfa5b31ec2 100644
--- a/test/unit/data/datatypes/test_h5ad_metadata.py
+++ b/test/unit/data/datatypes/test_h5ad_metadata.py
@@ -10,32 +10,35 @@
 
 
 def test_h5ad_sniff():
+    ann = Anndata()
     with get_input_files("anndata.h5ad") as input_files:
-        assert Anndata.sniff(input_files[0]) is True
+        assert ann.sniff(input_files[0]) is True
 
 
 def test_h5ad_set_meta():
+    ann = Anndata()
     with get_input_files("anndata.h5ad") as input_files:
         dataset = MockDataset(1)
         dataset.set_file_name(input_files[0])
 
-        Anndata.set_meta(dataset)
+        ann.set_meta(dataset)
 
         assert dataset.metadata.layers_count == "9"
         assert dataset.metadata.layers_names == "['X', 'layers', 'obs', 'obsm', 'obsp', 'uns', 'var', 'varm', 'varp']"
 
-        assert Anndata.set_meta._layercountsize(dataset) == "['X', 'layers', 'obs', 'obsm', 'obsp', 'uns', 'var', 'varm', 'varp'], 9, 0"
+        assert ann.set_meta._layercountsize(dataset) == "['X', 'layers', 'obs', 'obsm', 'obsp', 'uns', 'var', 'varm', 'varp'], 9, 0"
 
 
 
 def test_h5ad_set_peek():
+    ann = Anndata()
     with get_input_files("anndata.h5ad") as input_files:
         dataset = MockDataset(1)
         dataset.set_file_name(input_files[0])
-        assert Anndata.display_peek(dataset) == "Peek unavailable"
+        assert ann.display_peek(dataset) == "Peek unavailable"
 
-        Anndata.set_meta(dataset)
-        Anndata.set_peek(dataset)
+        ann.set_meta(dataset)
+        ann.set_peek(dataset)
 
         assert (
             dataset.peek
@@ -47,9 +50,7 @@ def test_h5ad_set_peek():
             [var]: 1 layer
                 index
             [obsm]: 0 layer
-
             [varm]: 0 layer
-
             [uns]: 0 layer
             """
         )