StaticStringSlice(trimmedGroupHeaders),
		StaticStringSlice(trimmedExtraHeaderPrefixes),
	), nil
}

func NewDynamic(nameHeaders, groupHeaders, extraHeaderPrefixes StringSliceProvider) authenticator.Request {
	return &requestHeaderAuthRequestHandler{
		nameHeaders:         nameHeaders,
		groupHeaders:        groupHeaders,
		extraHeaderPrefixes: extraHeaderPrefixes,
	}
}

	testcases := map[string]struct {
		nameHeaders        []string
		groupHeaders       []string
		extraPrefixHeaders []string
		requestHeaders     http.Header
		finalHeaders       http.Header

		expectedUser user.Info
		expectedOk   bool
	}{
		"empty": {},
		"user no match": {
			nameHeaders: []string{"X-Remote-User"},
		},
		"user match": {
			nameHeaders:    []string{"X-Remote-User"},

	testcases := map[string]struct {
		nameHeaders        []string
		groupHeaders       []string
		extraPrefixHeaders []string
		requestHeaders     http.Header
		finalHeaders       http.Header
	}{
		"user match": {
			nameHeaders:    []string{"X-Remote-User"},
			requestHeaders: http.Header{"X-Remote-User": {"Bob"}},
		},
		"user first match": {
			nameHeaders: []string{
				"X-Remote-User",