Function TestMany2ManyAssociation

tests/associations_many2many_test.go:13–98

(t *testing.T)

)

func TestMany2ManyAssociation(t *testing.T) {
	user := *GetUser("many2many", Config{Languages: 2})

	if err := DB.Create(&user).Error; err != nil {
		t.Fatalf("errors happened when create: %v", err)
	}

	CheckUser(t, user, user)

	// Find
	var user2 User
	DB.Find(&user2, "id = ?", user.ID)
	DB.Model(&user2).Association("Languages").Find(&user2.Languages)

	CheckUser(t, user2, user)

	// Count
	AssertAssociationCount(t, user, "Languages", 2, "")

	// Append
	language := Language{Code: "language-many2many-append", Name: "language-many2many-append"}
	DB.Create(&language)

	if err := DB.Model(&user2).Association("Languages").Append(&language); err != nil {
		t.Fatalf("Error happened when append account, got %v", err)
	}

	user.Languages = append(user.Languages, language)
	CheckUser(t, user2, user)

	AssertAssociationCount(t, user, "Languages", 3, "AfterAppend")

	languages := []Language{
		{Code: "language-many2many-append-1-1", Name: "language-many2many-append-1-1"},
		{Code: "language-many2many-append-2-1", Name: "language-many2many-append-2-1"},
	}
	DB.Create(&languages)

	if err := DB.Model(&user2).Association("Languages").Append(&languages); err != nil {
		t.Fatalf("Error happened when append language, got %v", err)
	}

	user.Languages = append(user.Languages, languages...)

	CheckUser(t, user2, user)

	AssertAssociationCount(t, user, "Languages", 5, "AfterAppendSlice")

	// Replace
	language2 := Language{Code: "language-many2many-replace", Name: "language-many2many-replace"}
	DB.Create(&language2)

	if err := DB.Model(&user2).Association("Languages").Replace(&language2); err != nil {
		t.Fatalf("Error happened when append language, got %v", err)
	}

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