Fix the tests

Author: Fokko

python/pyarrow/table.pxi

@@ -5048,6 +5048,7 @@ def concat_tables(tables, MemoryPool memory_pool=None, str promote_options="none
         For memory allocations, if required, otherwise use default pool.
     promote_options : str, default none
         Accepts strings "none", "default" and "permissive".
+    **kwargs: dict
 
     Examples
     --------
@@ -5091,7 +5092,7 @@ def concat_tables(tables, MemoryPool memory_pool=None, str promote_options="none
     elif promote_options in {"default", "none"}:
         options.field_merge_options = CField.CMergeOptions.Defaults()
     else:
-        raise ValueError(f"Invalid mode: {promote_options}")
+        raise ValueError(f"Invalid promote options: {promote_options}")
 
     with nogil:
         options.unify_schemas = promote_options != "none"

python/pyarrow/tests/test_table.py

@@ -1334,14 +1334,16 @@ def test_concat_tables_permissive():
     t1 = pa.Table.from_arrays([list(range(10))], names=('a',))
     t2 = pa.Table.from_arrays([list(('a', 'b', 'c'))], names=('a',))
 
-    with pytest.raises(pa.ArrowInvalid, match="Schema at index 1 was different:"):
+    with pytest.raises(
+            pa.ArrowTypeError,
+            match="Unable to merge: Field a has incompatible types: int64 vs string"):
         _ = pa.concat_tables([t1, t2], promote_options="permissive")
 
 
 def test_concat_tables_invalid_option():
     t = pa.Table.from_arrays([list(range(10))], names=('a',))
 
-    with pytest.raises(ValueError, match="Invalid merge option: invalid"):
+    with pytest.raises(ValueError, match="Invalid promote options: invalid"):
         pa.concat_tables([t, t], promote_options="invalid")