Empty table actually returns record batch of length one but there are no columns

Author: timsaucer

python/tests/test_context.py

@@ -691,7 +691,11 @@ def test_read_empty(ctx):
     result = df.collect()
     assert len(result) == 1
     assert result[0].num_columns == 0
-    assert result[0].num_rows == 0
+
+    df = ctx.empty_table()
+    result = df.collect()
+    assert len(result) == 1
+    assert result[0].num_columns == 0
 
 
 def test_register_arrow(ctx, tmp_path):