Function TestNilPointerSlice2

tests/preload_suits_test.go:1350–1391

(t *testing.T)

}

func TestNilPointerSlice2(t *testing.T) {
	type (
		Level4 struct {
			ID uint
		}
		Level3 struct {
			ID       uint
			Level4ID sql.NullInt64 `sql:"index"`
			Level4   *Level4
		}
		Level2 struct {
			ID      uint
			Level3s []*Level3 `gorm:"many2many:level2_level3s"`
		}
		Level1 struct {
			ID       uint
			Level2ID sql.NullInt64 `sql:"index"`
			Level2   *Level2
		}
	)

	DB.Migrator().DropTable(&Level3{}, &Level2{}, &Level1{}, &Level4{})

	if err := DB.AutoMigrate(new(Level4), new(Level3), new(Level2), new(Level1)); err != nil {
		t.Error(err)
	}

	want := new(Level1)
	if err := DB.Save(want).Error; err != nil {
		t.Error(err)
	}

	got := new(Level1)
	err := DB.Preload("Level2.Level3s.Level4").Last(&got).Error
	if err != nil {
		t.Error(err)
	}

	if !reflect.DeepEqual(got, want) {
		t.Errorf("got %s; want %s", toJSONString(got), toJSONString(want))
	}
}

func TestPrefixedPreloadDuplication(t *testing.T) {
	type (