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Diffstat (limited to 'src/VMTestsFiller/README.md')
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diff --git a/src/VMTestsFiller/README.md b/src/VMTestsFiller/README.md new file mode 100644 index 000000000..90ea45cb9 --- /dev/null +++ b/src/VMTestsFiller/README.md @@ -0,0 +1,21 @@ +VM tests +======== + +VM tests test one instance of EVM (which contains one stack of 256-bit words, and one memory space). + +Operations accessing the world state should be tested in GeneralStateTests or BlockchainTests instead of in VM tests. + +So VM tests should not contain + +* `BALANCE` +* `CREATE` +* `CREATE2` +* `CALL` +* `CALLCODE` +* `STATICCALL` +* `DELEGATECALL` +* `EXTCODESIZE` +* `EXTCODECOPY` +* `BLOCKHASH` + +Previously, some VM tests contained these, and clients were supposed to implement some mock of the world state (especially, the block hash of a block is supposed to be the hash of the block number).
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