**Spoiler alert**: the tutorial - user guide includes:

* Declaration of **parameters** from other different places as: **headers**, **cookies**, **form fields** and **files**.
* How to set **validation constraints** as `maximum_length` or `regex`.

    with pytest.raises(FastAPIError) as e:

        @app.get("/")
        def read_root() -> Union[Response, None]:
            return Response(content="Foo")  # pragma: no cover

    assert "valid Pydantic field type" in e.value.args[0]
    assert "parameter response_model=None" in e.value.args[0]


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text

	}

	if createdByRel, ok := userSchema.Relationships.Relations["CreatedBy"]; ok {
		if createdByRel.FieldSchema != userSchema {
			t.Fatalf("expects same field schema, but got new %p, old %p", createdByRel.FieldSchema, userSchema)
		}
	} else {
		t.Fatalf("expects created by relations, but not found")
	}
}

func TestEmbeddedHas(t *testing.T) {
	type Toy struct {

labels.q=Abfrage
labels.roles=Rollen
labels.suggestSearchLog=Suchprotokoll vorschlagen
labels.suggestWord=Wort vorschlagen
labels.targetLabel=Label
labels.term=Begriff
labels.fields=Felder
labels.ex_q=Erweiterte Abfrage
labels.oldPassword=Aktuelles Passwort
labels.newPassword=Neues Passwort
labels.confirmNewPassword=Neues Passwort (bestätigen)

labels.menu_system=System

labels.q=Zapytanie
labels.roles=Role
labels.suggestSearchLog=Dziennik wyszukiwania sugestii
labels.suggestWord=Sugerowane słowo
labels.targetLabel=Etykieta
labels.term=Termin wyszukiwania
labels.fields=Pola
labels.ex_q=Rozszerzone zapytanie
labels.oldPassword=Bieżące hasło
labels.newPassword=Nowe hasło
labels.confirmNewPassword=Potwierdź nowe hasło

labels.menu_system=System
labels.menu_wizard=Kreator

labels.purgeSuggestSearchLogDay=Eski öneri bilgilerini sil
labels.q=Sorgu
labels.roles=Roller
labels.suggestSearchLog=Öneri Arama Günlüğü
labels.suggestWord=Öneri Kelime
labels.targetLabel=Etiket
labels.term=Terim
labels.fields=Alanlar
labels.ex_q=Genişletilmiş Sorgu
labels.oldPassword=Mevcut Şifre
labels.newPassword=Yeni Şifre
labels.confirmNewPassword=Yeni Şifre (Onayla)

labels.menu_system=Sistem
labels.menu_wizard=Sihirbaz

import com.google.common.testing.NullPointerTester;
import com.google.common.testing.SerializableTester;
import java.io.IOException;
import java.io.StringReader;
import java.lang.reflect.Field;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.EnumMap;
import java.util.Enumeration;
import java.util.HashMap;

        "protocols doesn't contain http/1.1: $protocolList"
      }
      require(null !in protocolList as List<Protocol?>) { "protocols must not contain null" }
      field = protocolList
    }

  public val started: Boolean
    get() = socketAddress_ != null

  /**
   * Returns a URL for connecting to this server.
   *
   * @param path the request path, such as "/".

labels.q=Consulta
labels.roles=Roles
labels.suggestSearchLog=Registro de búsqueda para sugerencias
labels.suggestWord=Palabra sugerida
labels.targetLabel=Etiqueta
labels.term=Término de búsqueda
labels.fields=Campos
labels.ex_q=Consulta extendida
labels.oldPassword=Contraseña actual
labels.newPassword=Nueva contraseña
labels.confirmNewPassword=Confirmar nueva contraseña
labels.menu_system=Sistema

labels.purgeSuggestSearchLogDay=पुरानी सुझाव जानकारी हटाएं
labels.q=क्वेरी
labels.roles=भूमिकाएं
labels.suggestSearchLog=सुझाव खोज लॉग
labels.suggestWord=सुझाव शब्द
labels.targetLabel=लेबल
labels.term=शब्द
labels.fields=फ़ील्ड
labels.ex_q=विस्तारित क्वेरी
labels.oldPassword=वर्तमान पासवर्ड
labels.newPassword=नया पासवर्ड
labels.confirmNewPassword=नया पासवर्ड (पुष्टि)

labels.menu_system=सिस्टम
labels.menu_wizard=विज़ार्ड