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// Copyright (c) 2023-2026 Onur Cinar.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
// https://github.com/cinar/checker
package v2_test
import (
"testing"
v2 "github.com/cinar/checker/v2"
)
func TestDefaultStringZero(t *testing.T) {
result, err := v2.Default("guest")("")
if err != nil {
t.Fatal(err)
}
if result != "guest" {
t.Fatalf("actual %s expected %s", result, "guest")
}
}
func TestDefaultStringNonZero(t *testing.T) {
result, err := v2.Default("guest")("alice")
if err != nil {
t.Fatal(err)
}
if result != "alice" {
t.Fatalf("actual %s expected %s", result, "alice")
}
}
func TestDefaultIntZero(t *testing.T) {
result, err := v2.Default(3)(0)
if err != nil {
t.Fatal(err)
}
if result != 3 {
t.Fatalf("actual %d expected %d", result, 3)
}
}
func TestReflectDefaultStringZero(t *testing.T) {
type Person struct {
Role string `checkers:"default:guest"`
}
person := &Person{}
if _, ok := v2.CheckStruct(person); !ok {
t.Fatal("expected valid")
}
if person.Role != "guest" {
t.Fatalf("actual %s expected %s", person.Role, "guest")
}
}
func TestReflectDefaultStringNonZero(t *testing.T) {
type Person struct {
Role string `checkers:"default:guest"`
}
person := &Person{Role: "admin"}
if _, ok := v2.CheckStruct(person); !ok {
t.Fatal("expected valid")
}
if person.Role != "admin" {
t.Fatalf("actual %s expected %s", person.Role, "admin")
}
}
func TestReflectDefaultBool(t *testing.T) {
type Settings struct {
Enabled bool `checkers:"default:true"`
}
settings := &Settings{}
if _, ok := v2.CheckStruct(settings); !ok {
t.Fatal("expected valid")
}
if !settings.Enabled {
t.Fatal("expected Enabled to default to true")
}
}
func TestReflectDefaultInt(t *testing.T) {
type Order struct {
Retries int `checkers:"default:3"`
}
order := &Order{}
if _, ok := v2.CheckStruct(order); !ok {
t.Fatal("expected valid")
}
if order.Retries != 3 {
t.Fatalf("actual %d expected %d", order.Retries, 3)
}
}
func TestReflectDefaultUint(t *testing.T) {
type Order struct {
Retries uint `checkers:"default:3"`
}
order := &Order{}
if _, ok := v2.CheckStruct(order); !ok {
t.Fatal("expected valid")
}
if order.Retries != 3 {
t.Fatalf("actual %d expected %d", order.Retries, 3)
}
}
func TestReflectDefaultFloat(t *testing.T) {
type Order struct {
Price float64 `checkers:"default:9.99"`
}
order := &Order{}
if _, ok := v2.CheckStruct(order); !ok {
t.Fatal("expected valid")
}
if order.Price != 9.99 {
t.Fatalf("actual %f expected %f", order.Price, 9.99)
}
}
func TestReflectDefaultPointerNil(t *testing.T) {
type Order struct {
Timeout *int `checkers:"default:30"`
}
order := &Order{}
if _, ok := v2.CheckStruct(order); !ok {
t.Fatal("expected valid")
}
if order.Timeout == nil || *order.Timeout != 30 {
t.Fatalf("expected Timeout to default to 30, got %v", order.Timeout)
}
}
func TestReflectDefaultPointerNonNil(t *testing.T) {
type Order struct {
Timeout *int `checkers:"default:30"`
}
given := 5
order := &Order{Timeout: &given}
if _, ok := v2.CheckStruct(order); !ok {
t.Fatal("expected valid")
}
if order.Timeout != &given || *order.Timeout != 5 {
t.Fatalf("expected Timeout to stay 5, got %v", order.Timeout)
}
}
func TestReflectDefaultOrderingWithTrimAndRequired(t *testing.T) {
type Person struct {
Role string `checkers:"trim default:guest required"`
}
person := &Person{Role: " "}
errs, ok := v2.CheckStruct(person)
if !ok {
t.Fatalf("expected valid, got %v", errs)
}
if person.Role != "guest" {
t.Fatalf("actual %s expected %s", person.Role, "guest")
}
}
func TestReflectDefaultInvalidBool(t *testing.T) {
defer FailIfNoPanic(t, "expected panic")
type Settings struct {
Enabled bool `checkers:"default:abcd"`
}
v2.CheckStruct(&Settings{})
}
func TestReflectDefaultInvalidInt(t *testing.T) {
defer FailIfNoPanic(t, "expected panic")
type Order struct {
Retries int `checkers:"default:abcd"`
}
v2.CheckStruct(&Order{})
}
func TestReflectDefaultInvalidUint(t *testing.T) {
defer FailIfNoPanic(t, "expected panic")
type Order struct {
Retries uint `checkers:"default:abcd"`
}
v2.CheckStruct(&Order{})
}
func TestReflectDefaultInvalidFloat(t *testing.T) {
defer FailIfNoPanic(t, "expected panic")
type Order struct {
Price float64 `checkers:"default:abcd"`
}
v2.CheckStruct(&Order{})
}
func TestReflectDefaultUnsupportedKind(t *testing.T) {
defer FailIfNoPanic(t, "expected panic")
type Order struct {
Tags []string `checkers:"@default:abcd"`
}
v2.CheckStruct(&Order{})
}