}

  public void testConverter_nullConversions() {
    for (CaseFormat outer : CaseFormat.values()) {
      for (CaseFormat inner : CaseFormat.values()) {
        assertThat(outer.converterTo(inner).convert(null)).isNull();
        assertThat(outer.converterTo(inner).reverse().convert(null)).isNull();
      }
    }
  }

  public void testConverter_toString() {

    tester.testAllPublicStaticMethods(MoreObjects.class);
    tester.testAllPublicInstanceMethods(MoreObjects.toStringHelper(new TestClass()));
  }

  /** Test class for testing formatting of inner classes. */
  private static class TestClass {}

        assertTrue(exception instanceof Throwable);
    }

    public void test_stackTraceWithCause() {
        // Test that stack trace is properly preserved with cause
        String innerMessage = "Inner exception";
        String outerMessage = "Outer exception";
        RuntimeException innerException = new RuntimeException(innerMessage);
        StorageException exception = new StorageException(outerMessage, innerException);

        generator.setCommandTimeout(-1L);
        generator.setCommandTimeout(Long.MAX_VALUE);

        assertTrue("Timeout edge cases should be handled", true);
    }

    // Test ProcessDestroyer inner class
    public void test_processDestroyer_creation() throws Exception {
        // We can't directly test ProcessDestroyer without creating actual processes,

        public Class<?> getLastCredentialType() {
            return lastCredentialType;
        }

        public Function<?, ?> getLastFunction() {
            return lastFunction;
        }
    }

    // Inner class for test credential
    private static class TestLoginCredential implements LoginCredential {
        private final String username;
        private final String password;

            !item.equals(item.toString()));
      }
    }
  }

  /**
   * Class used to test whether equals() correctly handles an instance of an incompatible class.
   * Since it is a private inner class, the invoker can never pass in an instance to the tester
   */
  private enum NotAnInstance {
    EQUAL_TO_NOTHING;
  }

                .expiry(0) // Should not change
                .expiry(3000L);

        assertSame(purgeThumbnailJob, result);
        assertEquals(3000L, purgeThumbnailJob.getExpiry());
    }

    // Inner class for mock ThumbnailManager
    private static class MockThumbnailManager extends ThumbnailManager {
        private long purgeCallCount = 0;
        private long purgeExpiry = 0;

            !item.equals(item.toString()));
      }
    }
  }

  /**
   * Class used to test whether equals() correctly handles an instance of an incompatible class.
   * Since it is a private inner class, the invoker can never pass in an instance to the tester
   */
  private enum NotAnInstance {
    EQUAL_TO_NOTHING;
  }

        callback.store(params, booleanData);

        // Test with nested map
        Map<String, Object> nestedData = new HashMap<>();
        Map<String, String> innerMap = new HashMap<>();
        innerMap.put("inner", "value");
        nestedData.put("nested", innerMap);
        callback.store(params, nestedData);

        assertEquals(4L, callback.getDocumentSize());
    }

        // Test with nested exceptions
        String url = "http://example.com/test";
        String message = "Outer error message";
        Exception innerCause = new IllegalArgumentException("Inner cause");
        Exception middleCause = new IllegalStateException("Middle cause", innerCause);
        Exception outerCause = new RuntimeException("Outer cause", middleCause);