From 774e82d5627af9e116b56f5c0fb1ead74220860d Mon Sep 17 00:00:00 2001
From: Simon Willison <swillison@gmail.com>
Date: Sun, 26 Jul 2020 09:28:20 -0700
Subject: [PATCH] tests

---
 sqlite_utils/db.py            |  1 -
 tests/test_transform_table.py | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 32 insertions(+), 1 deletion(-)
 create mode 100644 tests/test_transform_table.py

diff --git a/sqlite_utils/db.py b/sqlite_utils/db.py
index 84bacac..9819555 100644
--- a/sqlite_utils/db.py
+++ b/sqlite_utils/db.py
@@ -362,7 +362,6 @@ class Database:
         """.format(
             table=name, columns_sql=columns_sql, extra_pk=extra_pk
         )
-        self.execute(sql)
         return sql
 
     def create_table(
diff --git a/tests/test_transform_table.py b/tests/test_transform_table.py
new file mode 100644
index 0000000..6eee33a
--- /dev/null
+++ b/tests/test_transform_table.py
@@ -0,0 +1,32 @@
+import pytest
+
+
+@pytest.mark.parametrize(
+    "params,expected_sql",
+    [
+        (
+            {},
+            [
+                "CREATE TABLE [dogs_new_suffix] (\n   [id] INTEGER,\n   [name] TEXT,\n   [age] TEXT\n);\n        ",
+                "INSERT INTO [dogs_new_suffix] ([age], [id], [name]) SELECT [age], [id], [name] FROM [dogs]",
+                "DROP TABLE [dogs]",
+                "ALTER TABLE [dogs_new_suffix] RENAME TO [dogs]",
+            ],
+        ),
+        (
+            {"rename": {"age": "dog_age"}},
+            [
+                "CREATE TABLE [dogs_new_suffix] (\n   [id] INTEGER,\n   [name] TEXT,\n   [dog_age] TEXT\n);\n        ",
+                "INSERT INTO [dogs_new_suffix] ([id], [dog_age], [name]) SELECT [id], [dog_age], [name] FROM [dogs]",
+                "DROP TABLE [dogs]",
+                "ALTER TABLE [dogs_new_suffix] RENAME TO [dogs]",
+            ],
+        ),
+    ],
+)
+def test_transform_table_sql(fresh_db, params, expected_sql):
+    dogs = fresh_db["dogs"]
+    dogs.insert({"id": 1, "name": "Cleo", "age": "5"}, pk="id")
+    params["tmp_suffix"] = "suffix"
+    sql = dogs.transform_table_sql(**params)
+    assert sql == expected_sql