Add ERC20 InInstruction test

processor/ethereum/router/src/tests/erc20.rs

@@ -0,0 +1,83 @@
+use alloy_core::primitives::{hex, Address, U256, Bytes, TxKind, PrimitiveSignature};
+use alloy_sol_types::SolCall;
+
+use alloy_consensus::{TxLegacy, SignableTransaction, Signed};
+
+use alloy_provider::Provider;
+
+use ethereum_primitives::keccak256;
+
+use crate::tests::Test;
+
+#[rustfmt::skip]
+#[expect(warnings)]
+#[expect(needless_pass_by_value)]
+#[expect(clippy::all)]
+#[expect(clippy::ignored_unit_patterns)]
+#[expect(clippy::redundant_closure_for_method_calls)]
+mod abi {
+  alloy_sol_macro::sol!("contracts/tests/ERC20.sol");
+}
+
+pub struct Erc20(Address);
+impl Erc20 {
+  pub(crate) async fn deploy(test: &Test) -> Self {
+    const BYTECODE: &[u8] = {
+      const BYTECODE_HEX: &[u8] =
+        include_bytes!(concat!(env!("OUT_DIR"), "/serai-processor-ethereum-router/TestERC20.bin"));
+      const BYTECODE: [u8; BYTECODE_HEX.len() / 2] =
+        match hex::const_decode_to_array::<{ BYTECODE_HEX.len() / 2 }>(BYTECODE_HEX) {
+          Ok(bytecode) => bytecode,
+          Err(_) => panic!("TestERC20.bin did not contain valid hex"),
+        };
+      &BYTECODE
+    };
+
+    let tx = TxLegacy {
+      chain_id: None,
+      nonce: 0,
+      gas_price: 100_000_000_000u128,
+      gas_limit: 1_000_000,
+      to: TxKind::Create,
+      value: U256::ZERO,
+      input: Bytes::from_static(BYTECODE),
+    };
+    let tx = ethereum_primitives::deterministically_sign(tx);
+    let receipt = ethereum_test_primitives::publish_tx(&test.provider, tx).await;
+    Self(receipt.contract_address.unwrap())
+  }
+
+  pub(crate) fn address(&self) -> Address {
+    self.0
+  }
+
+  pub(crate) async fn approve(&self, test: &Test, owner: Address, spender: Address, amount: U256) {
+    let tx = TxLegacy {
+      chain_id: None,
+      nonce: 0,
+      gas_price: 100_000_000_000u128,
+      gas_limit: 1_000_000,
+      to: self.0.into(),
+      value: U256::ZERO,
+      input: abi::TestERC20::magicApproveCall::new((owner, spender, amount)).abi_encode().into(),
+    };
+    let tx = ethereum_primitives::deterministically_sign(tx);
+    let receipt = ethereum_test_primitives::publish_tx(&test.provider, tx).await;
+    assert!(receipt.status());
+  }
+
+  pub(crate) async fn mint(&self, test: &Test, account: Address, amount: U256) {
+    let tx = TxLegacy {
+      chain_id: None,
+      nonce: 0,
+      gas_price: 100_000_000_000u128,
+      gas_limit: 1_000_000,
+      to: self.0.into(),
+      value: U256::ZERO,
+      input: abi::TestERC20::mintCall::new((account, amount)).abi_encode().into(),
+    };
+    let tx = ethereum_primitives::deterministically_sign(tx);
+    let receipt = ethereum_test_primitives::publish_tx(&test.provider, tx).await;
+    assert!(receipt.status());
+  }
+}