add test description

tests/catalog/test_sql.py

@@ -1500,8 +1500,9 @@ def test_table_exists(catalog: SqlCatalog, table_schema_simple: Schema, table_id
     ],
 )
 @pytest.mark.parametrize("format_version", [1, 2])
-def test_merge_manifests_file_integrity(catalog: SqlCatalog, arrow_table_with_null: pa.Table, format_version: int) -> None:
-    # temporary test for proof of correctness
+def test_merge_manifests_local_file_system(catalog: SqlCatalog, arrow_table_with_null: pa.Table, format_version: int) -> None:
+    # To catch manifest file name collision bug during merge:
+    # https://github.com/apache/iceberg-python/pull/363#discussion_r1660691918
     catalog.create_namespace_if_not_exists("default")
     try:
         catalog.drop_table("default.test_merge_manifest")
@@ -1510,7 +1511,11 @@ def test_merge_manifests_file_integrity(catalog: SqlCatalog, arrow_table_with_nu
     tbl = catalog.create_table(
         "default.test_merge_manifest",
         arrow_table_with_null.schema,
-        properties={"commit.manifest.min-count-to-merge": "1", "format-version": format_version},
+        properties={
+            "commit.manifest-merge.enabled": "true",
+            "commit.manifest.min-count-to-merge": "2",
+            "format-version": format_version,
+        },
     )
 
     for _ in range(5):