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| 1 | +use eyre::Result; |
| 2 | +use revm::primitives::{ |
| 3 | + calc_excess_blob_gas, keccak256, Bytecode, Bytes, CreateScheme, Env, TransactTo, U256, |
| 4 | +}; |
| 5 | +use std::{path::Path, process::Command}; |
| 6 | +use tempfile::Builder; |
| 7 | + |
| 8 | +use crate::{cuevm_test_suite::CuEvmTestSuite, inspector::TraceInspector}; |
| 9 | + |
| 10 | +/// Compare the output of CuEVM with the output of revm. Panics if there is a |
| 11 | +/// mismatch. |
| 12 | +pub fn execute_and_compare( |
| 13 | + cuevm_executable: String, |
| 14 | + test_json: String, |
| 15 | + pprint: bool, |
| 16 | +) -> Result<()> { |
| 17 | + let output_json = { |
| 18 | + let temp_dir = std::env::temp_dir(); |
| 19 | + let file = Builder::new() |
| 20 | + .prefix("mytempfile_") |
| 21 | + .suffix(".json") |
| 22 | + .tempfile_in(temp_dir)?; |
| 23 | + file.into_temp_path() |
| 24 | + .canonicalize()? |
| 25 | + .as_path() |
| 26 | + .to_str() |
| 27 | + .unwrap() |
| 28 | + .to_string() |
| 29 | + }; |
| 30 | + |
| 31 | + let out = Command::new(cuevm_executable) |
| 32 | + .args(["--input", &test_json]) |
| 33 | + .args(["--output", &output_json]) |
| 34 | + .output()?; |
| 35 | + |
| 36 | + if output_json.is_empty() { |
| 37 | + Err(eyre::eyre!( |
| 38 | + "Output json is empty, cuevm returns stdout: {:?}", |
| 39 | + out.stdout |
| 40 | + ))?; |
| 41 | + } |
| 42 | + |
| 43 | + println!("Input: {} CuEVM Output: {}", test_json, output_json); |
| 44 | + |
| 45 | + let path = Path::new(&output_json); |
| 46 | + let s = std::fs::read_to_string(path)?; |
| 47 | + let suite: CuEvmTestSuite = serde_json::from_str(&s)?; |
| 48 | + |
| 49 | + for (_name, unit) in suite.0 { |
| 50 | + // Create database and insert cache |
| 51 | + let mut cache_state = revm::CacheState::new(false); |
| 52 | + for (address, info) in unit.pre { |
| 53 | + let acc_info = revm::primitives::AccountInfo { |
| 54 | + balance: info.balance, |
| 55 | + code_hash: keccak256(&info.code), |
| 56 | + code: Some(Bytecode::new_raw(info.code)), |
| 57 | + nonce: info.nonce, |
| 58 | + }; |
| 59 | + cache_state.insert_account_with_storage(address, acc_info, info.storage); |
| 60 | + } |
| 61 | + |
| 62 | + let mut env = Env::default(); |
| 63 | + env.cfg.chain_id = 1; |
| 64 | + env.block.number = unit.env.current_number; |
| 65 | + env.block.coinbase = unit.env.current_coinbase; |
| 66 | + env.block.timestamp = unit.env.current_timestamp; |
| 67 | + env.block.gas_limit = unit.env.current_gas_limit; |
| 68 | + env.block.basefee = unit.env.current_base_fee.unwrap_or_default(); |
| 69 | + env.block.difficulty = unit.env.current_difficulty; |
| 70 | + env.block.prevrandao = Some(unit.env.current_difficulty.to_be_bytes().into()); |
| 71 | + if let (Some(parent_blob_gas_used), Some(parent_excess_blob_gas)) = ( |
| 72 | + unit.env.parent_blob_gas_used, |
| 73 | + unit.env.parent_excess_blob_gas, |
| 74 | + ) { |
| 75 | + env.block |
| 76 | + .set_blob_excess_gas_and_price(calc_excess_blob_gas( |
| 77 | + parent_blob_gas_used.to(), |
| 78 | + parent_excess_blob_gas.to(), |
| 79 | + )); |
| 80 | + } |
| 81 | + |
| 82 | + // Run test in post generated by cuevm |
| 83 | + for (index, test) in unit.post.into_iter().enumerate() { |
| 84 | + env.tx.gas_limit = test.msg.gas_limit.saturating_to(); |
| 85 | + env.tx.caller = test.msg.sender; |
| 86 | + env.tx.gas_price = test.msg.gas_price.unwrap_or_default(); // Note some ethtest has max_fee_per_gas |
| 87 | + |
| 88 | + env.tx.data = test.msg.data.clone(); |
| 89 | + env.tx.value = test.msg.value; |
| 90 | + |
| 91 | + let to = match test.msg.to { |
| 92 | + Some(add) => TransactTo::Call(add), |
| 93 | + None => TransactTo::Create(CreateScheme::Create), |
| 94 | + }; |
| 95 | + env.tx.transact_to = to; |
| 96 | + |
| 97 | + let cache = cache_state.clone(); |
| 98 | + let mut state = revm::db::State::builder() |
| 99 | + .with_cached_prestate(cache) |
| 100 | + .with_bundle_update() |
| 101 | + .build(); |
| 102 | + let mut evm = revm::new(); |
| 103 | + evm.database(&mut state); |
| 104 | + evm.env = env.clone(); |
| 105 | + |
| 106 | + let mut traces = vec![]; |
| 107 | + let inspector = TraceInspector { |
| 108 | + traces: &mut traces, |
| 109 | + }; |
| 110 | + |
| 111 | + let result = evm.inspect_commit(inspector); |
| 112 | + let mut success = false; |
| 113 | + let mut output = Bytes::new(); |
| 114 | + if let Ok(result) = result { |
| 115 | + success = result.is_success(); |
| 116 | + if let Some(o) = result.output() { |
| 117 | + output = o.to_owned(); |
| 118 | + } |
| 119 | + } |
| 120 | + |
| 121 | + if pprint { |
| 122 | + traces.iter().for_each(|trace| { |
| 123 | + trace.pprint(); |
| 124 | + }); |
| 125 | + println!( |
| 126 | + "ID: {} {} OUTPUT: {}", |
| 127 | + index, |
| 128 | + if success { "✅" } else { "❌" }, |
| 129 | + output |
| 130 | + ); |
| 131 | + } |
| 132 | + |
| 133 | + traces.iter().enumerate().skip(1).for_each(|(idx, t)| { |
| 134 | + let revm_stack = t.stack.data().clone(); |
| 135 | + let cuevm_stack = test.traces[idx - 1].stack.data.clone(); |
| 136 | + compare_stack(&test_json, idx, revm_stack, cuevm_stack).unwrap(); |
| 137 | + }); |
| 138 | + } |
| 139 | + } |
| 140 | + |
| 141 | + Ok(()) |
| 142 | +} |
| 143 | + |
| 144 | +fn compare_stack( |
| 145 | + test_json: &str, |
| 146 | + idx: usize, |
| 147 | + expected: Vec<U256>, |
| 148 | + actual: Vec<Bytes>, |
| 149 | +) -> Result<()> { |
| 150 | + macro_rules! err { |
| 151 | + () => { |
| 152 | + eprintln!("Expected: {:?}", &expected); |
| 153 | + eprintln!("Actual: {:?}", &actual); |
| 154 | + Err(eyre::eyre!( |
| 155 | + "Stack length mismatch at index {} from {}", |
| 156 | + idx, |
| 157 | + test_json |
| 158 | + ))? |
| 159 | + }; |
| 160 | + } |
| 161 | + if expected.len() != actual.len() { |
| 162 | + err!(); |
| 163 | + } |
| 164 | + let actual: Vec<U256> = actual |
| 165 | + .iter() |
| 166 | + .map(|x| { |
| 167 | + let mut padded_array = [0u8; 32]; |
| 168 | + let xs = x.iter().cloned().collect::<Vec<u8>>(); |
| 169 | + let len = xs.len(); |
| 170 | + padded_array[32 - len..].copy_from_slice(&xs); |
| 171 | + U256::from_be_bytes(padded_array) |
| 172 | + }) |
| 173 | + .collect(); |
| 174 | + if actual != expected { |
| 175 | + err!(); |
| 176 | + } |
| 177 | + Ok(()) |
| 178 | +} |
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