assertThrows(IllegalArgumentException.class, () -> base64().withSeparator("=", 3));

    assertThrows(
        IllegalArgumentException.class, () -> base64().withPadChar('#').withSeparator("!#!", 3));
  }

  public void testAtMostOneSeparator() {
    BaseEncoding separated = base64().withSeparator("\n", 3);
    assertThrows(UnsupportedOperationException.class, () -> separated.withSeparator("$", 4));
  }

    * `Path()`
    * `Query()`
    * `Header()`
    * `Cookie()`

Ahora, ejecuta tu aplicación:

<div class="termy">

```console
$ fastapi dev app/main.py

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

Y abre la documentación en <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

Agora, execute `uvicorn`, usando o módulo `app.main` e a variável `app`:

<div class="termy">

```console
$ uvicorn app.main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

E abra os documentos em <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class ListHashCodeTester<E> extends AbstractListTester<E> {
  public void testHashCode() {
    int expectedHashCode = 1;
    for (E element : getOrderedElements()) {

 */
package jcifs.util.transport;

import jcifs.CIFSException;

/**
 * Exception class for transport layer errors.
 * This exception is thrown when transport-related communication errors occur.
 */
public class TransportException extends CIFSException {

    /**
     *
     */
    private static final long serialVersionUID = 3743631204022885618L;

    /**

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;

class UrlSourceTest {

    @Test
    void testUrlSource() {
        NullPointerException e = assertThrows(
                NullPointerException.class, () -> new UrlSource(null), "Should fail, since you must specify a url");
        assertEquals("url cannot be null", e.getMessage());
    }

}
```

## 8. Performance Metrics

### 8.1 Channel Statistics
```java
public class MultiChannelStatistics {
    private final Map<String, ChannelStatistics> channelStats;
    
    public class ChannelStatistics {
        private final AtomicLong bytesSent = new AtomicLong();
        private final AtomicLong bytesReceived = new AtomicLong();

    Logger
      .getLogger("okhttp3")
      .addHandler(testHandler)
    Logger
      .getLogger(Http2::class.java.name)
      .addHandler(testHandler)
    Logger
      .getLogger(TaskRunner::class.java.name)
      .addHandler(testHandler)
    Logger
      .getLogger(OkHttpClient::class.java.name)
      .addHandler(testHandler)

    server.enqueue(MockResponse(body = "abc"))

    val request =

            return stringPart.toString() + digitPart.toString();
        }
    }

    /**
     * Represents a version list item. This class is used both for the global item list and for sub-lists (which start
     * with '-(number)' in the version specification).
     */
    private static class ListItem extends ArrayList<Item> implements Item {
        @Override
        public int getType() {
            return LIST_ITEM;
        }