assertNotNull(exception);
        assertNull(exception.getCause());
        assertNull(exception.getMessage());
    }

    /**
     * Test constructor with various cause types
     */
    public void test_constructor_withVariousCauseTypes() {
        // With Exception cause
        Exception exceptionCause = new Exception("Exception cause");

        Exception exception = new Exception("Test failure");
        result.addFailure(exception);

        assertTrue(result.hasFailure());
        assertEquals(1, result.getFailures().size());
        assertEquals(exception, result.getFailures().get(0));
    }

    @Test
    public void test_addMultipleFailures() throws Exception {
        SuggestWriterResult result = new SuggestWriterResult();

from pydantic import BaseModel, create_model
from starlette.exceptions import HTTPException as StarletteHTTPException
from starlette.exceptions import WebSocketException as StarletteWebSocketException


class EndpointContext(TypedDict, total=False):
    function: str
    path: str
    file: str
    line: int


class HTTPException(StarletteHTTPException):
    """
    An HTTP exception you can raise in your own code to show errors to the client.

        new Suppression(c1, c3Exception, c1Exception));
  }

  public static void testSuppressingSuppressor() throws IOException {
    Closer closer = Closer.create();

    IOException thrownException = new IOException();
    IOException c1Exception = new IOException();
    RuntimeException c2Exception = new RuntimeException();

        // All threads should fail with the same IOException (project ID is blank)
        // But importantly, there should be no race condition errors
        assertEquals(threadCount, failureCount.get());
        assertEquals(0, successCount.get());

        // All exceptions should be about project ID being blank
        for (Exception e : exceptions) {
            assertTrue(e instanceof IOException);

        new Suppression(c1, c3Exception, c1Exception));
  }

  public static void testSuppressingSuppressor() throws IOException {
    Closer closer = Closer.create();

    IOException thrownException = new IOException();
    IOException c1Exception = new IOException();
    RuntimeException c2Exception = new RuntimeException();

   * @param exceptionType the exception type that triggers use of {@code fallback}. The exception
   *     type is matched against the input's exception. "The input's exception" means the cause of
   *     the {@link ExecutionException} thrown by {@code input.get()} or, if {@code get()} throws a
   *     different kind of exception, that exception itself. To avoid hiding bugs and other

        // All threads should fail with the same IOException (endpoint is blank)
        // But importantly, there should be no race condition errors
        assertEquals(threadCount, failureCount.get());
        assertEquals(0, successCount.get());

        // All exceptions should be about endpoint being blank
        for (Exception e : exceptions) {
            assertTrue(e instanceof IOException);

        @DisplayName("Should handle deeply nested exceptions")
        void testToStringWithNestedExceptions() {
            Exception innermost = new IOException("Innermost exception");
            Exception middle = new RuntimeException("Middle exception", innermost);
            Exception rootCause = new IllegalStateException("Outer exception", middle);
            TransportException exception = new TransportException("Transport failed", rootCause);

     * exception. But there's another race: If the first thread fails with an exception and a second
     * thread immediately fails with the same exception:
     *
     * Thread1: calls setException(), which returns true, context switch before it can CAS
     * seenExceptionsField to its exception
     *