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Software testing is the act of checking whether software satisfies expectations.
Software testing can provide objective, independent information about the quality of software and the risk of its failure to a user or sponsor.[1]
Software testing can determine the correctness of software for specific scenarios but cannot determine correctness for all scenarios.[2][3] It cannot find all bugs.
Based on the criteria for measuring correctness from an oracle, software testing employs principles and mechanisms that might recognize a problem. Examples of oracles include specifications, contracts, [4] comparable products, past versions of the same product, inferences about intended or expected purpose, user or customer expectations, relevant standards, and applicable laws.
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