package fserr

import (
	"fmt"
	"testing"
)

func TestNew(t *testing.T) {
	expected := "test"
	err := New(expected)
	if err.Error() != expected {
		t.Errorf("expected %s but not", expected)
	}
	if fmt.Sprintf("%s", err) != expected {
		t.Errorf("expected %s but not", expected)
	}
	if fmt.Sprintf("%v", err) != expected {
		t.Errorf("expected %s but not", expected)
	}
	if fmt.Sprintf("%q", err) != `"test"` {
		t.Errorf("expected %s but not", expected)
	}
}

func TestWrap(t *testing.T) {
	expected := "wrap: test"
	err := Wrap(New("test"), "wrap")
	if err.Error() != expected {
		t.Errorf("expected %s but not", expected)
	}
	if fmt.Sprintf("%s", err) != expected {
		t.Errorf("expected %s but not", expected)
	}
	if fmt.Sprintf("%v", err) != expected {
		t.Errorf("expected %s but not", expected)
	}
	if fmt.Sprintf("%q", err) != `"wrap: test"` {
		t.Errorf("expected %s but not", expected)
	}
}

func TestCause(t *testing.T) {
	origin := New("origin")
	err := Wrap(origin, "wrap")
	err = UmWrap(err)
	if err != origin {
		t.Errorf("expected %s but not", "origin")
	}
}