differential testing

Differential testing compares outputs of two implementations to ensure they always produce identical results.差分测试比较两个实现的输出，以确保它们始终产生相同的结果。

The Ethereum testing suite uses differential testing across multiple clients to catch consensus-level discrepancies early.以太坊测试套件在多个客户端之间使用差分测试，以便早期发现共识层面的差异。