* <p>
     * <strong>Note:</strong> This method loads the entire file into memory.
     * For files larger than {@value #MAX_BUF_SIZE} bytes (10MB), an
     * {@link IORuntimeException} will be thrown to prevent OutOfMemoryError.
     * For large files, use streaming APIs instead.
     * </p>
     *
     * @param file
     *            The file. Must not be {@literal null}.

            assertEquals(runtimeException, exception.getCause());
        });

        // Test with error
        Error error = new OutOfMemoryError("Out of memory");
        assertDoesNotThrow(() -> {
            RuntimeCIFSException exception = new RuntimeCIFSException(error);
            assertEquals(error, exception.getCause());
        });
    }

        // Single Unicode character
        testTransformer.setName("あ");
        assertEquals("あ", testTransformer.getName());

        // Maximum practical length (avoid OutOfMemoryError)
        StringBuilder maxName = new StringBuilder();
        for (int i = 0; i < 1000; i++) {
            maxName.append("0123456789");
        }
        testTransformer.setName(maxName.toString());