111 lines
4.3 KiB
Nim
111 lines
4.3 KiB
Nim
# Nimbus
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# Copyright (c) 2018 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import
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unittest, stint, tables, parseutils,
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../nimbus/[constants, vm_types, logging],
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../nimbus/vm/interpreter,
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../nimbus/utils/header,
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../nimbus/db/[db_chain, state_db, backends/memory_backend],
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./test_helpers
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from eth_common import GasInt
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proc testCode(code: string, initialGas: GasInt, blockNum: UInt256): BaseComputation =
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let header = BlockHeader(blockNumber: blockNum)
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var vm = newNimbusVM(header, newBaseChainDB(newMemoryDB()))
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# coinbase: "",
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# difficulty: fixture{"env"}{"currentDifficulty"}.getHexadecimalInt.u256,
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# blockNumber: fixture{"env"}{"currentNumber"}.getHexadecimalInt.u256,
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# gasLimit: fixture{"env"}{"currentGasLimit"}.getHexadecimalInt.u256,
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# timestamp: fixture{"env"}{"currentTimestamp"}.getHexadecimalInt)
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let message = newMessage(
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to=ZERO_ADDRESS, #fixture{"exec"}{"address"}.getStr,
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sender=ZERO_ADDRESS, #fixture{"exec"}{"caller"}.getStr,
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value=0.u256,
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data = @[],
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code=code,
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gas=initial_gas,
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gasPrice=1) # What is this used for?
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# gasPrice=fixture{"exec"}{"gasPrice"}.getHexadecimalInt.u256,
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#options=newMessageOptions(origin=fixture{"exec"}{"origin"}.getStr))
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#echo fixture{"exec"}
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var c = newCodeStreamFromUnescaped(code)
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if DEBUG:
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c.displayDecompiled()
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var computation = newBaseComputation(vm.state, message)
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computation.opcodes = OpLogic # TODO remove this need
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computation.precompiles = initTable[string, Opcode]()
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computation = computation.applyComputation(vm.state, message)
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result = computation
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suite "opcodes":
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test "add":
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var c = testCode(
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"0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff01",
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100_000,
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0.u256
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)
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check(c.gasMeter.gasRemaining == 99_991)
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check(c.stack.peek == "115792089237316195423570985008687907853269984665640564039457584007913129639934".u256)
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# let address = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap();
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# let code = "7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff01600055".from_hex().unwrap();
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# let mut params = ActionParams::default();
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# params.address = address.clone();
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# params.gas = U256::from(100_000);
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# params.code = Some(Arc::new(code));
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# let mut ext = FakeExt::new();
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# let gas_left = {
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# let mut vm = factory.create(params.gas);
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# test_finalize(vm.exec(params, &mut ext)).unwrap()
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# };
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# assert_eq!(gas_left, U256::from(79_988));
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# assert_store(&ext, 0, "fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe");
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# }
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test "Frontier VM computation - pre-EIP150 gas cost properly applied":
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block: # Using Balance (0x31)
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var c = testCode(
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"0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff31",
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100_000,
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0.u256
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)
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check: c.gasMeter.gasRemaining == 100000 - 3 - 20 # Starting gas - push32 (verylow) - balance
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block: # Using SLOAD (0x54)
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var c = testCode(
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"0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff54",
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100_000,
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0.u256
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)
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check: c.gasMeter.gasRemaining == 100000 - 3 - 50 # Starting gas - push32 (verylow) - SLOAD
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test "Tangerine VM computation - post-EIP150 gas cost properly applied":
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block: # Using Balance (0x31)
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var c = testCode(
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"0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff31",
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100_000,
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2_463_000.u256 # Tangerine block
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)
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check: c.gasMeter.gasRemaining == 100000 - 3 - 400 # Starting gas - push32 (verylow) - balance
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block: # Using SLOAD (0x54)
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var c = testCode(
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"0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff54",
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100_000,
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2_463_000.u256
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)
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check: c.gasMeter.gasRemaining == 100000 - 3 - 200 # Starting gas - push32 (verylow) - SLOAD
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