/// tip | Tipp

Wenn Sie in Ihren Tests neben dem Senden von <abbr title="Request – Anfrage: Daten, die der Client zum Server sendet">Requests</abbr> an Ihre FastAPI-Anwendung auch `async`-Funktionen aufrufen möchten (z. B. asynchrone Datenbankfunktionen), werfen Sie einen Blick auf die [Async-Tests](../advanced/async-tests.md){.internal-link target=_blank} im Handbuch für fortgeschrittene Benutzer.

///

## Tests separieren { #separating-tests }

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;

@DisplayName("SmbSession Interface Contract Tests")
class SmbSessionTest {

    @Nested
    @DisplayName("AutoCloseable Contract Tests")
    class AutoCloseableContractTest {

        @Test
        @DisplayName("Should implement AutoCloseable interface")
        void shouldImplementAutoCloseable() {

// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
@IgnoreJRERequirement // We opt into library desugaring for our tests.
public class ListReplaceAllTester<E> extends AbstractListTester<E> {
  @ListFeature.Require(SUPPORTS_SET)
  public void testReplaceAll() {
    getList().replaceAll(e -> samples.e3());

import static org.junit.jupiter.api.Assertions.assertTrue;

import org.junit.jupiter.api.Test;
import org.mockito.Mockito;

/**
 * Tests for {@link SmbFilenameFilter}. Since the interface only defines
 * a single method, the tests simply ensure that the lambda expression
 * correctly implements the method and that any exception is propagated.
 */
class SmbFilenameFilterTest {

    @Test

            "analyzer": "sorani_analyzer"
          }
        }
      },
      {
        "lang_cs": {
          "match": "*_cs",
          "mapping": {
            "type": "text",
            "analyzer": "czech_analyzer"
          }
        }
      },
      {
        "lang_da": {
          "match": "*_da",
          "mapping": {
            "type": "text",
            "analyzer": "danish_analyzer"

    response = client.get("/", headers={"Authorization": "Bearer token"})
    assert response.status_code == 200, response.text
    assert response.json() == {"message": "Hello, World!"}


def test_get_root_no_token():
    response = client.get("/")
    assert response.status_code == 401, response.text
    assert response.json() == {"detail": "Not authenticated"}


def test_openapi_schema():

    assert response.status_code == 200, response.text
    assert response.json() == {"username": "Bearer footokenbar"}


def test_security_oauth2_password_other_header():
    response = client.get("/users/me", headers={"Authorization": "Other footokenbar"})
    assert response.status_code == 200, response.text
    assert response.json() == {"username": "Other footokenbar"}

		}
		numSplits++
		return 1, data[0:1], nil
	}
	// Read the data.
	const text = "abcdefghijklmnopqrstuvwxyz"
	buf := strings.NewReader(text)
	s := NewScanner(&slowReader{1, buf})
	s.Split(errorSplit)
	var i int
	for i = 0; s.Scan(); i++ {
		if len(s.Bytes()) != 1 || text[i] != s.Bytes()[0] {
			t.Errorf("#%d: expected %q got %q", i, text[i], s.Bytes()[0])
		}
	}
	// Check correct termination location and error.

    return {"item": item}


client = TestClient(app)


def test_put_correct_body():
    response = client.post("/items/", json=[{"name": "Foo", "age": 5}])
    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "item": [
                {
                    "name": "Foo",
                    "age": "5",
                }
            ]
        }
    )

    assert response.json() == ["foo", "bar", "baz"]


def test_stream_simple():
    response = client.get("/stream-simple")
    assert response.text == "xyz"


def test_stream_session():
    response = client.get("/stream-session")
    assert response.text == "foobarbaz"


def test_broken_session_data():
    with pytest.raises(ValueError, match="Session closed"):
        client.get("/broken-session-data")