Function TestMany2ManyAssociationForSlice

tests/associations_many2many_test.go:129–197

(t *testing.T)

}

func TestMany2ManyAssociationForSlice(t *testing.T) {
	users := []User{
		*GetUser("slice-many2many-1", Config{Languages: 2}),
		*GetUser("slice-many2many-2", Config{Languages: 0}),
		*GetUser("slice-many2many-3", Config{Languages: 4}),
	}

	DB.Create(&users)

	// Count
	AssertAssociationCount(t, users, "Languages", 6, "")

	// Find
	var languages []Language
	if DB.Model(&users).Association("Languages").Find(&languages); len(languages) != 6 {
		t.Errorf("languages count should be %v, but got %v", 6, len(languages))
	}

	// Append
	languages1 := []Language{
		{Code: "language-many2many-append-1", Name: "language-many2many-append-1"},
	}
	languages2 := []Language{}
	languages3 := []Language{
		{Code: "language-many2many-append-3-1", Name: "language-many2many-append-3-1"},
		{Code: "language-many2many-append-3-2", Name: "language-many2many-append-3-2"},
	}
	DB.Create(&languages1)
	DB.Create(&languages3)

	DB.Model(&users).Association("Languages").Append(&languages1, &languages2, &languages3)

	AssertAssociationCount(t, users, "Languages", 9, "After Append")

	languages2_1 := []*Language{
		{Code: "language-slice-replace-1-1", Name: "language-slice-replace-1-1"},
		{Code: "language-slice-replace-1-2", Name: "language-slice-replace-1-2"},
	}
	languages2_2 := []*Language{
		{Code: "language-slice-replace-2-1", Name: "language-slice-replace-2-1"},
		{Code: "language-slice-replace-2-2", Name: "language-slice-replace-2-2"},
	}
	languages2_3 := &Language{Code: "language-slice-replace-3", Name: "language-slice-replace-3"}
	DB.Create(&languages2_1)
	DB.Create(&languages2_2)
	DB.Create(&languages2_3)

	// Replace
	DB.Model(&users).Association("Languages").Replace(&languages2_1, &languages2_2, languages2_3)

	AssertAssociationCount(t, users, "Languages", 5, "After Replace")

	// Delete
	if err := DB.Model(&users).Association("Languages").Delete(&users[2].Languages); err != nil {
		t.Errorf("no error should happened when deleting language, but got %v", err)
	}

	AssertAssociationCount(t, users, "Languages", 4, "after delete")