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feat: Add encoding to test suite (#259)

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* feat: Add encoding to test suite

Use execution from simulation
Add protocol_system to all test files and pass it to run tycho
Add encoding_utils.rs

#time 5h 0m

#time 1m

#time 7m

* refactor: Move encoding swap to its own method to simplify main code

Rename encoding_utils.rs to encoding.rs

#time 20m


#time 0m

#time 0m
This commit is contained in:
dianacarvalho1
2025-09-11 14:30:49 +01:00
committed by GitHub
parent db5c418e57
commit 22843cfd3b
9 changed files with 1084 additions and 345 deletions
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1218
protocol-testing/Cargo.lock generated
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File diff suppressed because it is too large Load Diff

2
protocol-testing/Cargo.toml
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@@ -11,7 +11,7 @@ tracing = "0.1.37"
# Tycho dependencies
tycho-common = "0.82.0"
tycho-client = "0.82.0"
tycho-simulation = { git = "https://github.com/propeller-heads/tycho-simulation.git", tag = "0.157.0", features = ["evm"] }
tycho-simulation = { git = "https://github.com/propeller-heads/tycho-simulation.git", tag = "0.157.1", features = ["evm"] }
## TODO: for local development
#tycho-simulation = { path = "../../tycho-simulation" }
num-bigint = "0.4"

1
protocol-testing/src/config.rs
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@@ -140,5 +140,6 @@ pub struct IntegrationTestsConfig {
pub initialized_accounts: Option<Vec<String>>,
pub skip_balance_check: bool,
pub protocol_type_names: Vec<String>,
pub protocol_system: String,
pub tests: Vec<IntegrationTest>,
}

158
protocol-testing/src/encoding.rs Normal file
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@@ -0,0 +1,158 @@
use std::str::FromStr;
use alloy::{primitives::Keccak256, sol_types::SolValue};
use num_bigint::BigUint;
use tycho_common::{dto::Chain, Bytes};
use tycho_simulation::{
evm::protocol::u256_num::biguint_to_u256,
protocol::models::ProtocolComponent,
tycho_execution::encoding::{
errors::EncodingError,
evm::{encoder_builders::TychoRouterEncoderBuilder, utils::bytes_to_address},
models::{
EncodedSolution, NativeAction, Solution, SwapBuilder, Transaction, UserTransferType,
},
},
};
/// Encodes swap data for the Tycho router.
///
/// Assumes a single swap solution and encodes the data ready to be used by the Tycho router directly.
///
/// # Parameters
/// - `component`: The protocol component to swap through
/// - `token_in`: Input token address
/// - `token_out`: Output token address
/// - `amount_in`: Amount of input token to swap
/// - `amount_out`: Expected amount of output token
///
/// # Returns
/// A `Result<Transaction, EncodingError>` containing the encoded transaction data for the Tycho router,
/// or an error if encoding fails.
pub fn encode_swap(
component: ProtocolComponent,
token_in: Bytes,
token_out: Bytes,
amount_in: BigUint,
amount_out: BigUint,
) -> Result<Transaction, EncodingError> {
let chain: tycho_common::models::Chain = Chain::Ethereum.into();
let alice_address =
Bytes::from_str("0xcd09f75E2BF2A4d11F3AB23f1389FcC1621c0cc2").map_err(|_| {
EncodingError::FatalError("Alice's address can't be converted to Bytes".to_string())
})?;
let encoder = TychoRouterEncoderBuilder::new()
.chain(chain)
.user_transfer_type(UserTransferType::TransferFrom)
.build()
.expect("Failed to build encoder");
let swap = SwapBuilder::new(component, token_in.clone(), token_out.clone()).build();
let slippage = 0.0025; // 0.25% slippage
let bps = BigUint::from(10_000u32);
let slippage_percent = BigUint::from((slippage * 10000.0) as u32);
let multiplier = &bps - slippage_percent;
let min_amount_out = (amount_out * &multiplier) / &bps;
let solution = Solution {
sender: alice_address.clone(),
receiver: alice_address.clone(),
given_token: token_in,
given_amount: amount_in,
checked_token: token_out,
exact_out: false,
checked_amount: min_amount_out,
swaps: vec![swap],
..Default::default()
};
let encoded_solution = encoder
.encode_solutions(vec![solution.clone()])
.expect("Failed to encode router calldata")[0]
.clone();
encode_tycho_router_call(encoded_solution, &solution, &chain.wrapped_native_token().address)
}
/// Encodes a transaction for the Tycho Router using `singleSwap` method and regular token
/// transfers.
///
/// # Parameters
/// - `encoded_solution`: The solution already encoded by Tycho.
/// - `solution`: The high-level solution including tokens, amounts, and receiver info.
/// - `native_address`: The address used to represent the native token
///
/// # Returns
/// A `Result<Transaction, EncodingError>` that either contains the full transaction data (to,
/// value, data), or an error if the inputs are invalid.
pub fn encode_tycho_router_call(
encoded_solution: EncodedSolution,
solution: &Solution,
native_address: &Bytes,
) -> Result<Transaction, EncodingError> {
let (mut unwrap, mut wrap) = (false, false);
if let Some(action) = solution.native_action.clone() {
match action {
NativeAction::Wrap => wrap = true,
NativeAction::Unwrap => unwrap = true,
}
}
let given_amount = biguint_to_u256(&solution.given_amount);
let min_amount_out = biguint_to_u256(&solution.checked_amount);
let given_token = bytes_to_address(&solution.given_token)?;
let checked_token = bytes_to_address(&solution.checked_token)?;
let receiver = bytes_to_address(&solution.receiver)?;
let method_calldata = if encoded_solution
.function_signature
.contains("singleSwap")
{
(
given_amount,
given_token,
checked_token,
min_amount_out,
wrap,
unwrap,
receiver,
true,
encoded_solution.swaps,
)
.abi_encode()
} else {
Err(EncodingError::FatalError("Invalid function signature for Tycho router".to_string()))?
};
let contract_interaction = encode_input(&encoded_solution.function_signature, method_calldata);
let value = if solution.given_token == *native_address {
solution.given_amount.clone()
} else {
BigUint::ZERO
};
Ok(Transaction { to: encoded_solution.interacting_with, value, data: contract_interaction })
}
/// Encodes the input data for a function call to the given function signature (e.g.
/// transfer(address,uint256))
pub fn encode_input(selector: &str, mut encoded_args: Vec<u8>) -> Vec<u8> {
let mut hasher = Keccak256::new();
hasher.update(selector.as_bytes());
let selector_bytes = &hasher.finalize()[..4];
let mut call_data = selector_bytes.to_vec();
// Remove extra prefix if present (32 bytes for dynamic data)
// Alloy encoding is including a prefix for dynamic data indicating the offset or length
// but at this point we don't want that
if encoded_args.len() > 32 &&
encoded_args[..32] ==
[0u8; 31]
.into_iter()
.chain([32].to_vec())
.collect::<Vec<u8>>()
{
encoded_args = encoded_args[32..].to_vec();
}
call_data.extend(encoded_args);
call_data
}

1
protocol-testing/src/main.rs
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@@ -1,5 +1,6 @@
mod adapter_builder;
mod config;
mod encoding;
mod rpc;
mod test_runner;
mod tycho_rpc;

43
protocol-testing/src/test_runner.rs
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@@ -34,6 +34,7 @@ use tycho_simulation::{
use crate::{
adapter_builder::AdapterContractBuilder,
config::{IntegrationTest, IntegrationTestsConfig, ProtocolComponentWithTestConfig},
encoding::encode_swap,
rpc::RPCProvider,
tycho_rpc::TychoClient,
tycho_runner::TychoRunner,
@@ -173,6 +174,7 @@ impl TestRunner {
test.start_block,
test.stop_block,
&config.protocol_type_names,
&config.protocol_system,
)
.wrap_err("Failed to run Tycho")?;
@@ -226,7 +228,7 @@ fn validate_state(
.wrap_err("Failed to create Tycho client")?;
let chain = Chain::Ethereum;
let protocol_system = "test_protocol";
let protocol_system = &config.protocol_system;
// Fetch data from Tycho RPC. We use block_on to avoid using async functions on the testing
// module, in order to simplify debugging
@@ -336,7 +338,7 @@ fn validate_state(
let mut decoder = TychoStreamDecoder::new();
let decoder_context = DecoderContext::new().vm_adapter_path(adapter_contract_path_str);
decoder.register_decoder_with_context::<EVMPoolState<PreCachedDB>>(
"test_protocol",
protocol_system,
decoder_context,
);
@@ -402,7 +404,7 @@ fn validate_state(
.wrap_err("Failed to get block header")?;
let state_msgs: HashMap<String, StateSyncMessage<BlockHeader>> = HashMap::from([(
String::from("test_protocol"),
String::from(protocol_system),
StateSyncMessage {
header: BlockHeader {
hash: Bytes::from(bytes),
@@ -490,25 +492,36 @@ fn validate_state(
continue;
}
state
let amount_out_result = state
.get_amount_out(amount_in.clone(), token_in, token_out)
.map(|result| {
info!(
"Amount out for trading {:.1}% of max: ({} {} -> {} {}) (gas: {})",
percentage * 100.0,
amount_in,
token_in.symbol,
result.amount,
token_out.symbol,
result.gas
)
})
.into_diagnostic()
.wrap_err(format!(
"Error calculating amount out for Pool {id:?} at {:.1}% with input of {amount_in} {}.",
percentage * 100.0,
token_in.symbol,
))?;
info!(
"Amount out for trading {:.1}% of max: ({} {} -> {} {}) (gas: {})",
percentage * 100.0,
amount_in,
token_in.symbol,
amount_out_result.amount,
token_out.symbol,
amount_out_result.gas
);
let protocol_component = block_msg.new_pairs.get(id);
if let Some(pc) = protocol_component {
let calldata = encode_swap(
pc.clone(),
token_in.address.clone(),
token_out.address.clone(),
amount_in,
amount_out_result.amount,
);
info!("Encoded swap successfully");
}
}
}
}

2
protocol-testing/src/tycho_rpc.rs
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@@ -15,14 +15,12 @@ use tycho_common::{
#[derive(Debug)]
pub enum RpcError {
ClientError(String),
ResponseError(String),
}
impl fmt::Display for RpcError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
RpcError::ClientError(msg) => write!(f, "RPC client error: {msg}"),
RpcError::ResponseError(msg) => write!(f, "RPC response error: {msg}"),
}
}
}

3
protocol-testing/src/tycho_runner.rs
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@@ -31,6 +31,7 @@ impl TychoRunner {
start_block: u64,
end_block: u64,
protocol_type_names: &[String],
protocol_system: &str,
) -> miette::Result<()> {
// Expects a .env present in the same folder as package root (where Cargo.toml is)
dotenv().ok();
@@ -50,6 +51,8 @@ impl TychoRunner {
"map_protocol_changes",
"--protocol-type-names",
&protocol_type_names.join(","),
"--protocol-system",
protocol_system,
"--start-block",
&start_block.to_string(),
"--stop-block",

1
substreams/ethereum-balancer-v2/integration_test.tycho.yaml
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@@ -1,4 +1,5 @@
substreams_yaml_path: ./substreams.yaml
protocol_system: "vm:balancer_v2"
protocol_type_names:
- "balancer_v2_pool"
adapter_contract: "BalancerV2SwapAdapter"