t.Errorf("expected: success-vol to be created")
	}

	// removing the path and simulating disk failure
	os.RemoveAll(path)
	// should fail with errDiskNotFound.
	if _, err = xlStorage.ListVols(context.Background()); err != errDiskNotFound {
		t.Errorf("Expected to fail with \"%s\", but instead failed with \"%s\"", errDiskNotFound, err)
	}
}

            sitemapsHelper.parse(in);
            fail();
        } catch (final CrawlingAccessException e) {
            // NOP
        }
    }

    public void test_parseXmlSitemaps_invalid2() {
        final byte[] bytes = "test".getBytes();
        final InputStream in = new ByteArrayInputStream(bytes);

        try {
            sitemapsHelper.parse(in);
            fail();

 * governing permissions and limitations under the License.
 */
package org.codelibs.curl;

import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.util.logging.Level;
import java.util.logging.Logger;

import org.junit.Test;

public class CurlTest {
    private static final Logger logger = Logger.getLogger(CurlTest.class.getName());

```Python hl_lines="14-19"
{!../../docs_src/events/tutorial003.py!}
```

Der erste Teil der Funktion, vor dem `yield`, wird ausgeführt **bevor** die Anwendung startet.

Und der Teil nach `yield` wird ausgeführt, **nachdem** die Anwendung beendet ist.

### Asynchroner Kontextmanager

Wie Sie sehen, ist die Funktion mit einem `@asynccontextmanager` versehen.

        return ITEM_ENDPOINT_SUFFIX;
    }

    @Override
    protected Map<String, Object> createTestParam(int id) {
        fail(); // Unreachable
        return null;
    }

    @Override
    protected Map<String, Object> getUpdateMap() {
        fail(); // Unreachable
        return null;
    }

    @Override
    protected void testRead() {

        : !iterable.iterator().hasNext();
  }

  public static void assertEmpty(Iterable<?> iterable) {
    if (!isEmpty(iterable)) {
      fail("Not true that " + iterable + " is empty");
    }
  }

  public static void assertEmpty(Map<?, ?> map) {
    if (!map.isEmpty()) {
      fail("Not true that " + map + " is empty");
    }
  }

  public static void assertEqualInOrder(Iterable<?> expected, Iterable<?> actual) {

Isso inclui, por exemplo:

- Envio de notificações por email após a realização de uma ação:
  - Como conectar-se a um servidor de e-mail e enviar um e-mail tende a ser "lento" (vários segundos), você pode retornar a resposta imediatamente e enviar a notificação por e-mail em segundo plano.
- Processando dados:

    }

    public void test_preprocessUri_null() {
        try {
            fsClient.preprocessUri(null);
            fail();
        } catch (final CrawlerSystemException e) {}
        try {
            fsClient.preprocessUri("");
            fail();
        } catch (final CrawlerSystemException e) {}
    }

    public void test_doHead_file() throws Exception {

                }
                return null;
            }
        };
        client.setAccessTimeout(1);
        try {
            client.doGet("smb1://localhost/test.txt");
            fail();
        } catch (CrawlingAccessException e) {
            assertTrue(e.getCause() instanceof InterruptedException);
        }
    }

    public void test_doHead_accessTimeoutTarget() {

        return ITEM_ENDPOINT_SUFFIX;
    }

    @Override
    protected Map<String, Object> createTestParam(int id) {
        fail(); // Unreachable
        return null;
    }

    @Override
    protected Map<String, Object> getUpdateMap() {
        fail(); // Unreachable
        return null;
    }

    @Override
    protected void testRead() {