Tesing in-app billing - clearing the cache

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http://stackoverflow.com – In the documentation for in app billing (v3), it says: "Upon a successful purchase, the user’s purchase data is cached locally by Google Play’s In-app Billing service." I now want to thoroughly test my app's billing code and wish to clear that cache. Its important because without the data being in the cache, it may take a little longer to collect the data - or it may not be accessible at all. I want to test that my app can handle these cases. So is there a way to clear that cache? (HowTos)