assertNotNull("Content should not be null", result.getContent());
            // Empty or minimal content is acceptable for invalid archives
        } catch (final ExtractException e) {
            // Exception is also acceptable - verify it has a descriptive message
            assertTrue("Error message should mention TAR archive or extraction failure",

        } catch (final RuntimeException e) {
            // POI may throw IllegalArgumentException or other RuntimeExceptions
            // for invalid data, which is also acceptable
            assertNotNull("Exception message should not be null", e.getMessage());
        }
    }

    /**
     * Test that MsExcelExtractor throws appropriate exception for invalid data.

     *
     * @return true if the CPU load is within the acceptable range, false otherwise.
     */
    public boolean calibrateCpuLoad() {
        return calibrateCpuLoad(0L);
    }

    /**
     * Calibrates the CPU load with a timeout.
     *
     * @param timeoutInMillis The timeout in milliseconds.
     * @return true if the CPU load is within the acceptable range, false otherwise.
     */