Add test for #6853

Author: joshmoore

fixture/meta/.zarray

@@ -0,0 +1,23 @@
+{
+    "chunks": [
+        2,
+        2
+    ],
+    "compressor": {
+        "blocksize": 0,
+        "clevel": 5,
+        "cname": "lz4",
+        "id": "blosc",
+        "shuffle": 1
+    },
+    "dimension_separator": ".",
+    "dtype": "<i8",
+    "fill_value": 0,
+    "filters": null,
+    "order": "C",
+    "shape": [
+        2,
+        2
+    ],
+    "zarr_format": 2
+}

fixture/meta/0.0

@@ -2559,3 +2559,9 @@ def test_normalize_store_arg(tmpdir):
         path = tempfile.mkdtemp()
         store = normalize_store_arg("file://" + path, zarr_version=2, mode='w')
         assert isinstance(store, FSStore)
+
+
+def test_meta_prefix_6853():
+
+    fixture = group(store=DirectoryStore('fixture'))
+    assert list(fixture.arrays())