Function TestMigrateAutoIncrement

tests/migrate_test.go:1023–1062

https://github.com/go-gorm/gorm/issues/4760

(t *testing.T)

// https://github.com/go-gorm/gorm/issues/4760
func TestMigrateAutoIncrement(t *testing.T) {
	type AutoIncrementStruct struct {
		ID     int64   `gorm:"primarykey;autoIncrement"`
		Field1 uint32  `gorm:"column:field1"`
		Field2 float32 `gorm:"column:field2"`
	}

	if err := DB.AutoMigrate(&AutoIncrementStruct{}); err != nil {
		t.Fatalf("AutoMigrate err: %v", err)
	}

	const ROWS = 10
	for idx := 0; idx < ROWS; idx++ {
		if err := DB.Create(&AutoIncrementStruct{}).Error; err != nil {
			t.Fatalf("create auto_increment_struct fail, err: %v", err)
		}
	}

	rows := make([]*AutoIncrementStruct, 0, ROWS)
	if err := DB.Order("id ASC").Find(&rows).Error; err != nil {
		t.Fatalf("find auto_increment_struct fail, err: %v", err)
	}

	ids := make([]int64, 0, len(rows))
	for _, row := range rows {
		ids = append(ids, row.ID)
	}
	lastID := ids[len(ids)-1]

	if err := DB.Where("id IN (?)", ids).Delete(&AutoIncrementStruct{}).Error; err != nil {
		t.Fatalf("delete auto_increment_struct fail, err: %v", err)
	}

	newRow := &AutoIncrementStruct{}
	if err := DB.Create(newRow).Error; err != nil {
		t.Fatalf("create auto_increment_struct fail, err: %v", err)
	}

	AssertEqual(t, newRow.ID, lastID+1)
}

// https://github.com/go-gorm/gorm/issues/5320
func TestPrimarykeyID(t *testing.T) {