} catch (AssertionError expected) {
      return;
    }
    fail();
  }

  public void testAssertSubtypeTokenBeforeSupertypeToken_duplicate() {
    try {
      assertSubtypeTokenBeforeSupertypeToken(
          ImmutableList.of(TypeToken.of(String.class), TypeToken.of(String.class)));
    } catch (AssertionError expected) {
      return;
    }
    fail();

            result.setUserAgent(DfTypeUtil.toString(source.get("userAgent")));
            result.setVirtualHosts(toStringArray(source.get("virtualHosts")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {
            final String msg = "Cannot create a new instance: " + entityType.getName();
            throw new IllegalBehaviorStateException(msg, e);
        }
    }

public class FessFileTransformerTest extends UnitFessTestCase {

    private String encodeUrl(final String url) {
        try {
            return URLEncoder.encode(url, Constants.UTF_8);
        } catch (final UnsupportedEncodingException e) {
            throw new FessSystemException("Unsupported encoding.", e);
        }
    }

    public void test_decodeUrl_ok() throws Exception {
        String url, exp;

        builder.put(range1, 1).put(range2, 2);
        try {
          ImmutableRangeMap<Integer, Integer> unused = builder.build();
          assertFalse(expectRejection);
        } catch (IllegalArgumentException e) {
          assertTrue(expectRejection);
        }
      }
    }
  }

  public void testGet() {
    for (Range<Integer> range1 : RANGES) {

        }
        return Inet6Address.getByAddress(
            v6Address.getHostAddress(), v6Address.getAddress(), asInterface);
      } catch (SocketException | UnknownHostException e) {
        throw new IllegalArgumentException("No such interface: " + scope, e);
      }
    } catch (UnknownHostException e) {
      throw new AssertionError(e);
    }
  }

  /**

    // it's shared to avoid using too much memory in tests
    double[] sharedArray = new double[arraysDim2];
    Arrays.fill(arrays, sharedArray);

    try {
      Doubles.concat(arrays);
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

  public void testEnsureCapacity() {
    assertThat(Doubles.ensureCapacity(EMPTY, 0, 1)).isSameInstanceAs(EMPTY);

## Handling disconnections and multiple clients

When a WebSocket connection is closed, the `await websocket.receive_text()` will raise a `WebSocketDisconnect` exception, which you can then catch and handle like in this example.

//// tab | Python 3.9+

```Python hl_lines="79-81"
{!> ../../docs_src/websockets/tutorial003_py39.py!}
```

////

//// tab | Python 3.8+

        builder.put(range1, 1).put(range2, 2);
        try {
          ImmutableRangeMap<Integer, Integer> unused = builder.build();
          assertFalse(expectRejection);
        } catch (IllegalArgumentException e) {
          assertTrue(expectRejection);
        }
      }
    }
  }

  public void testGet() {
    for (Range<Integer> range1 : RANGES) {

            result.setUsername(DfTypeUtil.toString(source.get("username")));
            result.setWebConfigId(DfTypeUtil.toString(source.get("webConfigId")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {
            final String msg = "Cannot create a new instance: " + entityType.getName();
            throw new IllegalBehaviorStateException(msg, e);
        }
    }

  @CollectionSize.Require(absent = ZERO)
  public void testPut_unsupportedPresentExistingValue() {
    try {
      assertEquals("put(present, existingValue) should return present or throw", v0(), put(e0()));
    } catch (UnsupportedOperationException tolerated) {
    }
    expectUnchanged();
  }

  @MapFeature.Require(absent = SUPPORTS_PUT)
  @CollectionSize.Require(absent = ZERO)