func TestAppend(t *testing.T) {
err := errors.Appends(ErrFoo, "inner string")
if err.Error() != "Fooey. inner string" {
t.Error("String error for ReverseWraps")
return
}
err = errors.Appendf(ErrFoo, "%s", Strger)
if err.Error() != "Fooey. stringer out" {
t.Error("String error for ReverseWrapf")
return
}
}
// The default header checker will only proceed if it's 200 OK and an HTML Content-Type
func defaultCheckHeader(crawler *Crawler, url string, status int, header http.Header) error {
if status != 200 {
return errors.Appends(ErrBadHttpCode, "Received "+strconv.Itoa(status)+" "+http.StatusText(status))
}
contentType := header.Get("Content-Type")
if contentType == "" {
return errors.Appends(ErrBadContentType, "Content-Type header missing")
}
mediaType, _, err := mime.ParseMediaType(contentType)
if err != nil {
return errors.Appends(ErrBadContentType, "Malformated Content-Type header")
}
if mediaType == "text/html" || mediaType == "application/xhtml+xml" {
return nil
} else {
return errors.Appends(ErrBadContentType, mediaType+" is not supported")
}
}