(fix): try assertion error

Author: ilan-gold

tests/test_codecs/test_blosc.py

@@ -61,6 +61,8 @@ async def test_blosc_evolve(store: Store, dtype: str) -> None:
 async def test_typesize() -> None:
     a = np.arange(1000000)
     codecs = [zarr.codecs.BytesCodec(), zarr.codecs.BloscCodec()]
-    z3 = zarr.array(a, chunks=(10000), codecs=codecs)
-    v3_size = len(await z3.store.get("c/0", prototype=default_buffer_prototype()))
-    assert v3_size == (402 if Version(numcodecs.__version__) >= Version("0.16.0") else 10216)
+    z = zarr.array(a, chunks=(10000), codecs=codecs)
+    size = len(await z.store.get("c/0", prototype=default_buffer_prototype()))
+    assert size == (402 if Version(numcodecs.__version__) >= Version("0.16.0") else 10216), (
+        "blosc size mismatch, found {size}"
+    )