From af8a53af32eebbb2dff9d7b670b8bf8a5ad4914d Mon Sep 17 00:00:00 2001
From: a631807682 <631807682@qq.com>
Date: Tue, 18 Oct 2022 08:35:48 +0800
Subject: [PATCH 1/3] test: invalid cache plan with prepare stmt

---
 tests/migrate_test.go | 37 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 36 insertions(+), 1 deletion(-)

diff --git a/tests/migrate_test.go b/tests/migrate_test.go
index b918b4b56..2b7292e9d 100644
--- a/tests/migrate_test.go
+++ b/tests/migrate_test.go
@@ -850,7 +850,7 @@ func findColumnType(dest interface{}, columnName string) (
 	return
 }
 
-func TestInvalidCachedPlan(t *testing.T) {
+func TestInvalidCachedPlanSimpleProtocol(t *testing.T) {
 	if DB.Dialector.Name() != "postgres" {
 		return
 	}
@@ -885,6 +885,41 @@ func TestInvalidCachedPlan(t *testing.T) {
 	}
 }
 
+func TestInvalidCachedPlanPrepareStmt(t *testing.T) {
+	if DB.Dialector.Name() != "postgres" {
+		return
+	}
+
+	db, err := gorm.Open(postgres.Open(postgresDSN), &gorm.Config{PrepareStmt: true})
+	if err != nil {
+		t.Errorf("Open err:%v", err)
+	}
+
+	type Object1 struct{}
+	type Object2 struct {
+		Field1 string
+	}
+	type Object3 struct {
+		Field2 string
+	}
+	db.Migrator().DropTable("objects")
+
+	err = db.Table("objects").AutoMigrate(&Object1{})
+	if err != nil {
+		t.Errorf("AutoMigrate err:%v", err)
+	}
+
+	err = db.Table("objects").AutoMigrate(&Object2{})
+	if err != nil {
+		t.Errorf("AutoMigrate err:%v", err)
+	}
+
+	err = db.Table("objects").AutoMigrate(&Object3{})
+	if err != nil {
+		t.Errorf("AutoMigrate err:%v", err)
+	}
+}
+
 func TestDifferentTypeWithoutDeclaredLength(t *testing.T) {
 	type DiffType struct {
 		ID   uint

From b9f50de6750cfa53375f569f0299678e0637d805 Mon Sep 17 00:00:00 2001
From: a631807682 <631807682@qq.com>
Date: Wed, 19 Oct 2022 20:23:58 +0800
Subject: [PATCH 2/3] test: more test cases

---
 tests/migrate_test.go | 48 ++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 45 insertions(+), 3 deletions(-)

diff --git a/tests/migrate_test.go b/tests/migrate_test.go
index fc0cfc01d..94667b139 100644
--- a/tests/migrate_test.go
+++ b/tests/migrate_test.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"math/rand"
+	"os"
 	"reflect"
 	"strings"
 	"testing"
@@ -12,6 +13,7 @@ import (
 	"gorm.io/driver/postgres"
 
 	"gorm.io/gorm"
+	"gorm.io/gorm/logger"
 	"gorm.io/gorm/schema"
 	. "gorm.io/gorm/utils/tests"
 )
@@ -934,13 +936,26 @@ func TestInvalidCachedPlanPrepareStmt(t *testing.T) {
 	if err != nil {
 		t.Errorf("Open err:%v", err)
 	}
+	if debug := os.Getenv("DEBUG"); debug == "true" {
+		db.Logger = db.Logger.LogMode(logger.Info)
+	} else if debug == "false" {
+		db.Logger = db.Logger.LogMode(logger.Silent)
+	}
 
-	type Object1 struct{}
+	type Object1 struct {
+		ID uint
+	}
 	type Object2 struct {
-		Field1 string
+		ID     uint
+		Field1 int `gorm:"type:int8"`
 	}
 	type Object3 struct {
-		Field2 string
+		ID     uint
+		Field1 int `gorm:"type:int4"`
+	}
+	type Object4 struct {
+		ID     uint
+		Field2 int
 	}
 	db.Migrator().DropTable("objects")
 
@@ -948,16 +963,43 @@ func TestInvalidCachedPlanPrepareStmt(t *testing.T) {
 	if err != nil {
 		t.Errorf("AutoMigrate err:%v", err)
 	}
+	err = db.Table("objects").Create(&Object1{}).Error
+	if err != nil {
+		t.Errorf("create err:%v", err)
+	}
 
+	// AddColumn
 	err = db.Table("objects").AutoMigrate(&Object2{})
 	if err != nil {
 		t.Errorf("AutoMigrate err:%v", err)
 	}
 
+	err = db.Table("objects").Take(&Object2{}).Error
+	if err != nil {
+		t.Errorf("take err:%v", err)
+	}
+
+	// AlterColumn
 	err = db.Table("objects").AutoMigrate(&Object3{})
 	if err != nil {
 		t.Errorf("AutoMigrate err:%v", err)
 	}
+
+	err = db.Table("objects").Take(&Object3{}).Error
+	if err != nil {
+		t.Errorf("take err:%v", err)
+	}
+
+	// AddColumn
+	err = db.Table("objects").AutoMigrate(&Object4{})
+	if err != nil {
+		t.Errorf("AutoMigrate err:%v", err)
+	}
+
+	err = db.Table("objects").Take(&Object4{}).Error
+	if err != nil {
+		t.Errorf("take err:%v", err)
+	}
 }
 
 func TestDifferentTypeWithoutDeclaredLength(t *testing.T) {

From ab216e89e91d08638770edc05c5a1906f76a8e12 Mon Sep 17 00:00:00 2001
From: a631807682 <631807682@qq.com>
Date: Thu, 20 Oct 2022 12:50:57 +0800
Subject: [PATCH 3/3] test: drop and rename column

---
 tests/migrate_test.go | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/tests/migrate_test.go b/tests/migrate_test.go
index 94667b139..96b1d0e4c 100644
--- a/tests/migrate_test.go
+++ b/tests/migrate_test.go
@@ -1000,6 +1000,26 @@ func TestInvalidCachedPlanPrepareStmt(t *testing.T) {
 	if err != nil {
 		t.Errorf("take err:%v", err)
 	}
+
+	db.Table("objects").Migrator().RenameColumn(&Object4{}, "field2", "field3")
+	if err != nil {
+		t.Errorf("RenameColumn err:%v", err)
+	}
+
+	err = db.Table("objects").Take(&Object4{}).Error
+	if err != nil {
+		t.Errorf("take err:%v", err)
+	}
+
+	db.Table("objects").Migrator().DropColumn(&Object4{}, "field3")
+	if err != nil {
+		t.Errorf("RenameColumn err:%v", err)
+	}
+
+	err = db.Table("objects").Take(&Object4{}).Error
+	if err != nil {
+		t.Errorf("take err:%v", err)
+	}
 }
 
 func TestDifferentTypeWithoutDeclaredLength(t *testing.T) {