test case for alter perf

py/correctness/test.sh

@@ -2,4 +2,4 @@
 
 # source env/bin/activate
 # python -m pytest tests -s -k test_cl_merging
-python3 -m pytest tests -s 
+python3 -m pytest tests -s -k test_commit_alter_perf

py/correctness/tests/test_commit_alter_perf.py

@@ -0,0 +1,32 @@
+from crsql_correctness import connect, close, min_db_v
+from pprint import pprint
+import pytest
+import time
+
+def test_commit_alter_perf():
+  c = connect(":memory:")
+  c.execute("CREATE TABLE issue (id INTEGER PRIMARY KEY NOT NULL, title TEXT, owner TEXT, status INTEGER, priority INTEGER)")
+  c.execute("SELECT crsql_as_crr('issue')")
+  c.commit()
+
+  start_time = time.time()
+  for i in range(10_000):
+    c.execute("INSERT INTO issue (title, owner, status, priority) VALUES ('title', 'owner', 1, 1)")
+  c.commit()
+  end_time = time.time()
+  print(f"insert time: {end_time - start_time}")
+
+  start_time = time.time()
+  c.execute("SELECT crsql_begin_alter('issue')")
+  c.execute("SELECT crsql_commit_alter('issue')")
+  end_time = time.time()
+  print(f"no alter alter time: {end_time - start_time}")
+
+  start_time = time.time()
+  c.execute("SELECT crsql_begin_alter('issue')")
+  c.execute("ALTER TABLE issue ADD COLUMN description TEXT")
+  c.execute("SELECT crsql_commit_alter('issue')")
+  end_time = time.time()
+  print(f"alter add col time: {end_time - start_time}")
+
+  None