Avoid MySQL integrity constraint violation

I followed the sample in README and on my second run of the test, it showed this error.

Unable to create the Magento fixture SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '1-1' for key 'UNQ_CATALOGINVENTORY_STOCK_ITEM_PRODUCT_ID_STOCK_ID'

I followed the solution in this page (http://www.magentocommerce.com/boards/viewthread/300959/)