user.ManagerID = &manager2.ID
	CheckUser(t, user2, user)

	AssertAssociationCount(t, user2, "Company", 1, "AfterReplace")
	AssertAssociationCount(t, user2, "Manager", 1, "AfterReplace")

	// Delete
	if err := DB.Model(&user2).Association("Company").Delete(&Company{}); err != nil {
		t.Fatalf("Error happened when delete Company, got %v", err)
	}
	AssertAssociationCount(t, user2, "Company", 1, "after delete non-existing data")

	}

	user.Languages = []Language{language2}
	CheckUser(t, user2, user)

	AssertAssociationCount(t, user2, "Languages", 1, "AfterReplace")

	// Delete
	if err := DB.Model(&user2).Association("Languages").Delete(&Language{}); err != nil {
		t.Fatalf("Error happened when delete language, got %v", err)
	}
	AssertAssociationCount(t, user2, "Languages", 1, "after delete non-existing data")

	}

	user.Pets = []*Pet{&pet2}
	CheckUser(t, user2, user)

	AssertAssociationCount(t, user2, "Pets", 1, "AfterReplace")

	// Delete
	if err := DB.Model(&user2).Association("Pets").Delete(&Pet{}); err != nil {
		t.Fatalf("Error happened when delete pet, got %v", err)
	}
	AssertAssociationCount(t, user2, "Pets", 1, "after delete non-existing data")

	}

	user.Account = account2
	CheckUser(t, user2, user)

	AssertAssociationCount(t, user2, "Account", 1, "AfterReplace")

	// Delete
	if err := DB.Model(&user2).Association("Account").Delete(&Account{}); err != nil {
		t.Fatalf("Error happened when delete account, got %v", err)
	}
	AssertAssociationCount(t, user2, "Account", 1, "after delete non-existing data")

package tests_test

import (
	"testing"

	"gorm.io/gorm"
	"gorm.io/gorm/clause"
	"gorm.io/gorm/schema"
	. "gorm.io/gorm/utils/tests"
)

func AssertAssociationCount(t *testing.T, data interface{}, name string, result int64, reason string) {
	if count := DB.Model(data).Association(name).Count(); count != result {
		t.Fatalf("invalid %v count %v, expects: %v got %v", name, reason, result, count)
	}

	var newUser User