string_test.go

package goption

import (
	"testing"
)

type IsStringer struct{}

func (IsStringer) String() string {
	return "haha"
}
func (IsStringer) GoString() string {
	return `"haha"`
}

func TestStringer(t *testing.T) {
	if str := Some(IsStringer{}).String(); str != "haha" {
		t.Errorf("Failed wrapping stringer: %s", str)
	}

	if str := None[IsStringer]().String(); str != "null" {
		t.Errorf("Failed stringer for empty option: %s", str)
	}

	if str := Some(struct{}{}).String(); str != "{}" {
		t.Errorf("Failed wrapping struct{}: %s", str)
	}

	if str := None[struct{}]().String(); str != "null" {
		t.Errorf("Failed wrapping struct{}: %s", str)
	}
}

func TestGoStringer(t *testing.T) {
	if str := Some(IsStringer{}).GoString(); str != `"haha"` {
		t.Errorf("Failed wrapping go stringer: %s", str)
	}

	if str := None[IsStringer]().GoString(); str != "Option[goption.IsStringer]{ok: false}" {
		t.Errorf("Failed go stringer for empty option: %s", str)
	}

	if str := Some(struct{}{}).GoString(); str != "struct {}{}" {
		t.Errorf("Failed wrapping struct{}: %s", str)
	}

	if str := None[struct{}]().GoString(); str != "Option[struct {}]{ok: false}" {
		t.Errorf("Failed wrapping struct{}: %s", str)
	}
}