package fa

import (
	"errors"
	"testing"
)

func TestSystemMessageError_IsErrSystemMessage(t *testing.T) {
	err := &SystemMessageError{Title: "Something", Body: "broke"}
	if !errors.Is(err, ErrSystemMessage) {
		t.Fatalf("errors.Is(SystemMessageError, ErrSystemMessage) = false; want true")
	}
}

func TestHTTPError_Format(t *testing.T) {
	e := &HTTPError{StatusCode: 503, URL: "https://example/"}
	if got := e.Error(); got != "fa: http 503 for https://example/" {
		t.Fatalf("HTTPError.Error() = %q", got)
	}
}

func TestSentinelsAreDistinct(t *testing.T) {
	sentinels := []error{
		ErrNotFound, ErrUnauthorized, ErrCloudflareChallenge,
		ErrRateLimited, ErrSystemMessage, ErrParse,
	}
	for i, a := range sentinels {
		for j, b := range sentinels {
			if i != j && errors.Is(a, b) {
				t.Errorf("sentinel %v wrongly matches %v", a, b)
			}
		}
	}
}