*       will be thrown.
 *   <li>If no exceptions or errors were thrown in the try block, the <i>first</i> exception thrown
 *       by an attempt to close a resource will be thrown.
 *   <li>Any exception caught when attempting to close a resource that is <i>not</i> thrown (because
 *       another exception is already being thrown) is <i>suppressed</i>.
 * </ul>
 *

    }
  }

  /**
   * Different exceptions happening on multiple futures with the same cause should not be logged.
   */
  public void testAllAsList_logging_same_cause() throws Exception {
    try {
      MyException exception1 = new MyException();
      MyException exception2 = new MyException();
      MyException exception3 = new MyException();

      MyException sameInstance = new MyException();

                    reference = exception.getClass().getSimpleName();
                }
            } else if (exception instanceof LifecycleExecutionException) {
                reference = getReference(exception.getCause());
            } else if (isNoteworthyException(exception)) {
                reference = exception.getClass().getSimpleName();
            }
        }

This diagram shows `HTTPException`, but you could also raise any other exception that you catch in a dependency with `yield` or with a [Custom Exception Handler](../handling-errors.md#install-custom-exception-handlers){.internal-link target=_blank}.

    If you raise any exception, it will be passed to the dependencies with yield, including `HTTPException`. In most cases you will want to re-raise that same exception or a new one from the dependency with `yield` to make sure it's properly...

  @BeforeExperiment
  void addOtherEntries() throws Exception {
    GetCheckedTypeValidator validator = this.validator.validator;
    Class<? extends Exception> exceptionType = this.exceptionType.exceptionType;

    for (Class<? extends Exception> exceptionClass :
        OTHER_EXCEPTION_TYPES.asList().subList(0, otherEntriesInDataStructure)) {

  }

  @J2ktIncompatible
  @GwtIncompatible
  public void testAsAsyncCallable_exception() throws Exception {
    final Exception expected = new IllegalArgumentException();
    Callable<String> callable =
        new Callable<String>() {
          @Override
          public String call() throws Exception {
            throw expected;
          }
        };

    AsyncCallable<String> asyncCallable =

```

## Install custom exception handlers

You can add custom exception handlers with <a href="https://www.starlette.io/exceptions/" class="external-link" target="_blank">the same exception utilities from Starlette</a>.

Let's say you have a custom exception `UnicornException` that you (or a library you use) might `raise`.

And you want to handle this exception globally with FastAPI.

  public void testFlush_flushableWithEatenException() throws IOException {
    // make sure that no exception is thrown if 'swallowException' is true
    // when the mock does throw an exception on flush.
    setupFlushable(true);
    doFlush(mockFlushable, true, false);
  }

  public void testFlush_flushableWithThrownException() throws IOException {
    // make sure that the exception is thrown if 'swallowException' is false

    }

    /**
     * @throws Exception
     */
    public void testIsExist() throws Exception {
        assertEquals("1", true, ResourceUtil.isExist("CLMessages.properties"));
        assertEquals("2", false, ResourceUtil.isExist("hoge"));
    }

    /**
     * @throws Exception
     */
    public void testGetExtension() throws Exception {

  @BeforeExperiment
  void addOtherEntries() throws Exception {
    GetCheckedTypeValidator validator = this.validator.validator;
    Class<? extends Exception> exceptionType = this.exceptionType.exceptionType;

    for (Class<? extends Exception> exceptionClass :
        OTHER_EXCEPTION_TYPES.asList().subList(0, otherEntriesInDataStructure)) {