}
        };

        String[] testStrings = { "simple", "with spaces", "special!@#$%^&*()", "unicode_test", "", "very long string " + "x".repeat(100) };

        for (String testStr : testStrings) {
            String encrypted = cipher.encrypt(testStr);
            String decrypted = cipher.decrypt(encrypted);

        DictionaryException exception = new DictionaryException("Serialization test");

        assertTrue(exception instanceof java.io.Serializable);
    }

    public void test_toString() {
        // Test toString method
        String message = "Dictionary parse error";
        Exception cause = new NullPointerException("NPE occurred");

    new EqualsTester()
        .addEqualityGroup(testTable)
        .addEqualityGroup(ArrayTable.create(ImmutableSet.of('A'), ImmutableSet.of(1)))
        .testEquals();
  }

  public void testToString() {
    assertEquals("{a={1=blah}}", testTable.toString());
  }

  public void testContains() {
    assertTrue(testTable.contains('a', 1));
    assertFalse(testTable.contains('a', 2));

        LdapConfigurationException exception2 = new LdapConfigurationException(message);
        assertEquals(exception.getMessage(), exception2.getMessage());
    }

    public void test_toString() {
        // Test the toString method
        String message = "LDAP configuration is invalid";
        LdapConfigurationException exception = new LdapConfigurationException(message);

    ticker.advance(1);
    assertEquals(1, stopwatch.elapsed(MILLISECONDS));
  }

  @J2ktIncompatible // TODO(b/259213718): Switch J2kt to String.format("%.4g") once that's supported
  public void testToString() {
    stopwatch.start();
    assertEquals("0.000 ns", stopwatch.toString());
    ticker.advance(1);
    assertEquals("1.000 ns", stopwatch.toString());
    ticker.advance(998);

      assertEquals(1, task.get().intValue());
      assertEquals(1, counter.get());
    }
    executor.shutdown();
  }

  @J2ktIncompatible
  @GwtIncompatible // blocking wait
  public void testToString() throws Exception {
    CountDownLatch enterLatch = new CountDownLatch(1);
    CountDownLatch exitLatch = new CountDownLatch(1);
    TrustedListenableFutureTask<@Nullable Void> task =

        // and the exception extends RuntimeException which is Serializable
        assertTrue(exception instanceof java.io.Serializable);
    }

    public void test_toString() {
        // Test toString method
        String message = "Test exception message";
        UnsupportedSearchException exception = new UnsupportedSearchException(message);

        // The exception should be serializable as it extends RuntimeException
        assertTrue(exception instanceof java.io.Serializable);
    }

    public void test_toString() {
        // Test toString method
        String message = "Thumbnail generation failed for file.jpg";
        ThumbnailGenerationException exception = new ThumbnailGenerationException(message);

        assertEquals(message, exception.getMessage()); // Call twice to verify consistency
        assertEquals(message, exception.getLocalizedMessage());
    }

    public void test_toString() {
        // Test toString method
        String message = "Test exception message";
        JobNotFoundException exception = new JobNotFoundException(message);

        String toStringResult = exception.toString();

        SsoLoginException specialException = new SsoLoginException(specialMessage);
        assertEquals(specialMessage, specialException.getMessage());
    }

    public void test_toString() {
        // Test toString() method
        String message = "SSO toString test";
        SsoLoginException exception = new SsoLoginException(message);

        String toStringResult = exception.toString();