ERC20 test with cairo2 (#767)

* add erc20

* use exec

* use deploy syscall

* use proxy contract

* use erc class hash

* fix test

* add asserts

* clippy

* remove old crate dep

* Update starknet_programs/cairo2/deploy_erc20.cairo

Co-authored-by: Matías Ignacio González <maigonzalez@fi.uba.ar>

* Update starknet_programs/cairo2/deploy_erc20.cairo

Co-authored-by: Matías Ignacio González <maigonzalez@fi.uba.ar>

* Update src/testing/erc20.rs

Co-authored-by: Matías Ignacio González <maigonzalez@fi.uba.ar>

* Update src/testing/erc20.rs

Co-authored-by: Matías Ignacio González <maigonzalez@fi.uba.ar>

* Update src/testing/erc20.rs

Co-authored-by: Matías Ignacio González <maigonzalez@fi.uba.ar>

* remove duplicated function

---------

Co-authored-by: Matías Ignacio González <maigonzalez@fi.uba.ar>

Author: SantiagoPittella

src/lib.rs

@@ -108,6 +108,7 @@ pub fn call_contract<T: State + StateReader>(
     calldata: Vec<Felt252>,
     state: &mut T,
     block_context: BlockContext,
+    caller_address: Address,
 ) -> Result<Vec<Felt252>, TransactionError> {
     let contract_address = Address(contract_address);
     let class_hash = state.get_class_hash_at(&contract_address)?;
@@ -118,7 +119,6 @@ pub fn call_contract<T: State + StateReader>(
     let signature = vec![];
     let max_fee = 1000000000;
     let initial_gas = 1000000000;
-    let caller_address = Address(0.into());
     let version = 0;
 
     let execution_entrypoint = ExecutionEntryPoint::new(
@@ -319,6 +319,7 @@ mod test {
             calldata,
             &mut state,
             BlockContext::default(),
+            Address(0.into()),
         )
         .unwrap();
 

src/testing/erc20.rs

@@ -0,0 +1,254 @@
+#![allow(unused_imports)]
+use std::{collections::HashMap, io::Bytes, path::Path, vec};
+
+use crate::{
+    call_contract,
+    definitions::{
+        block_context::{BlockContext, StarknetChainId},
+        constants::CONSTRUCTOR_ENTRY_POINT_SELECTOR,
+    },
+    execution::{
+        execution_entry_point::ExecutionEntryPoint, CallType, TransactionExecutionContext,
+    },
+    services::api::contract_classes::deprecated_contract_class::ContractClass,
+    state::{
+        cached_state::CachedState,
+        in_memory_state_reader::InMemoryStateReader,
+        state_api::{State, StateReader},
+        ExecutionResourcesManager,
+    },
+    transaction::{error::TransactionError, DeployAccount, InvokeFunction},
+    utils::calculate_sn_keccak,
+    EntryPointType, Felt252,
+};
+use cairo_lang_starknet::casm_contract_class::CasmContractClass;
+use cairo_vm::felt::felt_str;
+use lazy_static::lazy_static;
+use num_traits::Zero;
+pub const ERC20_CONTRACT_PATH: &str = "starknet_programs/cairo2/ERC20.casm";
+use crate::{
+    state::state_cache::StorageEntry,
+    utils::{felt_to_hash, Address, ClassHash},
+};
+
+use super::{
+    get_contract_class, new_starknet_block_context_for_testing, ACCOUNT_CONTRACT_PATH, ACTUAL_FEE,
+    TEST_ACCOUNT_CONTRACT_ADDRESS, TEST_ACCOUNT_CONTRACT_CLASS_HASH, TEST_CLASS_HASH,
+    TEST_CONTRACT_ADDRESS, TEST_CONTRACT_PATH, TEST_ERC20_ACCOUNT_BALANCE_KEY,
+    TEST_ERC20_CONTRACT_CLASS_HASH,
+};
+
+#[test]
+fn test_erc20_cairo2() {
+    // data to deploy
+    let erc20_class_hash: ClassHash = [2; 32];
+    let test_data = include_bytes!("../../starknet_programs/cairo2/erc20.casm");
+    let test_contract_class: CasmContractClass = serde_json::from_slice(test_data).unwrap();
+
+    // Create the deploy contract class
+    let program_data = include_bytes!("../../starknet_programs/cairo2/deploy_erc20.casm");
+    let contract_class: CasmContractClass = serde_json::from_slice(program_data).unwrap();
+    let entrypoints = contract_class.clone().entry_points_by_type;
+    let entrypoint_selector = &entrypoints.external.get(0).unwrap().selector;
+
+    // Create state reader with class hash data
+    let mut contract_class_cache = HashMap::new();
+
+    let address = Address(1111.into());
+    let class_hash: ClassHash = [1; 32];
+    let nonce = Felt252::zero();
+
+    contract_class_cache.insert(class_hash, contract_class);
+    contract_class_cache.insert(erc20_class_hash, test_contract_class);
+
+    let mut state_reader = InMemoryStateReader::default();
+    state_reader
+        .address_to_class_hash_mut()
+        .insert(address.clone(), class_hash);
+    state_reader
+        .address_to_nonce_mut()
+        .insert(address.clone(), nonce);
+
+    // Create state from the state_reader and contract cache.
+    let mut state = CachedState::new(state_reader, None, Some(contract_class_cache));
+
+    let name_ = Felt252::from_bytes_be(b"some-token");
+    let symbol_ = Felt252::from_bytes_be(b"my-super-awesome-token");
+    let decimals_ = Felt252::from(24);
+    let initial_supply = Felt252::from(1000);
+    let recipient =
+        felt_str!("397149464972449753182583229366244826403270781177748543857889179957856017275");
+    let erc20_salt = felt_str!("1234");
+    // arguments of deploy contract
+    let calldata = vec![
+        Felt252::from_bytes_be(&erc20_class_hash),
+        erc20_salt,
+        recipient,
+        name_,
+        decimals_,
+        initial_supply,
+        symbol_,
+    ];
+    // set up remaining structures
+
+    let caller_address = Address(0000.into());
+    let entry_point_type = EntryPointType::External;
+
+    let exec_entry_point = ExecutionEntryPoint::new(
+        address,
+        calldata,
+        Felt252::new(entrypoint_selector.clone()),
+        caller_address,
+        entry_point_type,
+        Some(CallType::Delegate),
+        Some(class_hash),
+        100_000_000_000,
+    );
+
+    // Execute the entrypoint
+    let block_context = BlockContext::default();
+    let mut tx_execution_context = TransactionExecutionContext::new(
+        Address(0.into()),
+        Felt252::zero(),
+        Vec::new(),
+        0,
+        10.into(),
+        block_context.invoke_tx_max_n_steps(),
+        1.into(),
+    );
+    let mut resources_manager = ExecutionResourcesManager::default();
+
+    let call_info = exec_entry_point
+        .execute(
+            &mut state,
+            &block_context,
+            &mut resources_manager,
+            &mut tx_execution_context,
+            false,
+        )
+        .unwrap();
+    let erc20_address = call_info.retdata.get(0).unwrap().clone();
+
+    // ACCOUNT 1
+    let program_data_account =
+        include_bytes!("../../starknet_programs/cairo2/hello_world_account.casm");
+    let contract_class_account: CasmContractClass =
+        serde_json::from_slice(program_data_account).unwrap();
+
+    state
+        .set_compiled_class(&felt_str!("1"), contract_class_account)
+        .unwrap();
+
+    let contract_address_salt =
+        felt_str!("2669425616857739096022668060305620640217901643963991674344872184515580705509");
+
+    let internal_deploy_account = DeployAccount::new(
+        felt_str!("1").to_be_bytes(),
+        0,
+        1.into(),
+        Felt252::zero(),
+        vec![2.into()],
+        vec![
+            felt_str!(
+                "3233776396904427614006684968846859029149676045084089832563834729503047027074"
+            ),
+            felt_str!(
+                "707039245213420890976709143988743108543645298941971188668773816813012281203"
+            ),
+        ],
+        contract_address_salt,
+        StarknetChainId::TestNet.to_felt(),
+        None,
+    )
+    .unwrap();
+
+    let account_address_1 = internal_deploy_account
+        .execute(&mut state, &Default::default())
+        .unwrap()
+        .validate_info
+        .unwrap()
+        .contract_address;
+
+    // ACCOUNT 2
+    let program_data_account =
+        include_bytes!("../../starknet_programs/cairo2/hello_world_account.casm");
+    let contract_class_account: CasmContractClass =
+        serde_json::from_slice(program_data_account).unwrap();
+
+    state
+        .set_compiled_class(&felt_str!("1"), contract_class_account)
+        .unwrap();
+
+    let contract_address_salt = felt_str!("123123123123123");
+
+    let internal_deploy_account = DeployAccount::new(
+        felt_str!("1").to_be_bytes(),
+        0,
+        1.into(),
+        Felt252::zero(),
+        vec![2.into()],
+        vec![
+            felt_str!(
+                "3233776396904427614006684968846859029149676045084089832563834729503047027074"
+            ),
+            felt_str!(
+                "707039245213420890976709143988743108543645298941971188668773816813012281203"
+            ),
+        ],
+        contract_address_salt,
+        StarknetChainId::TestNet.to_felt(),
+        None,
+    )
+    .unwrap();
+
+    let account_address_2 = internal_deploy_account
+        .execute(&mut state, &Default::default())
+        .unwrap()
+        .validate_info
+        .unwrap()
+        .contract_address;
+
+    // TRANSFER
+    let entrypoint_selector = Felt252::from_bytes_be(&calculate_sn_keccak(b"transfer"));
+    let calldata = vec![account_address_2.clone().0, Felt252::from(123)];
+
+    let retdata = call_contract(
+        erc20_address.clone(),
+        entrypoint_selector,
+        calldata,
+        &mut state,
+        BlockContext::default(),
+        account_address_1.clone(),
+    )
+    .unwrap();
+
+    assert!(retdata.is_empty());
+
+    // GET BALANCE ACCOUNT 1
+    let entrypoint_selector = Felt252::from_bytes_be(&calculate_sn_keccak(b"balance_of"));
+    let retdata = call_contract(
+        erc20_address.clone(),
+        entrypoint_selector,
+        vec![account_address_1.clone().0],
+        &mut state,
+        BlockContext::default(),
+        account_address_1.clone(),
+    )
+    .unwrap();
+
+    assert_eq!(retdata, vec![877.into()]);
+
+    // GET BALANCE ACCOUNT 2
+    let entrypoint_selector = Felt252::from_bytes_be(&calculate_sn_keccak(b"balance_of"));
+    let retdata = call_contract(
+        erc20_address,
+        entrypoint_selector,
+        vec![account_address_2.0],
+        &mut state,
+        BlockContext::default(),
+        account_address_1,
+    )
+    .unwrap();
+
+    assert_eq!(retdata, vec![123.into()]);
+}

src/testing/mod.rs

@@ -1,3 +1,4 @@
+pub mod erc20;
 pub mod state;
 pub mod state_error;
 pub mod type_utils;

starknet_programs/cairo2/deploy_erc20.cairo

@@ -0,0 +1,35 @@
+use starknet::contract_address::ContractAddress;
+use starknet::class_hash::ClassHash;
+#[starknet::interface]
+trait IDeployTest<TContractState> {
+    fn deploy_test(self: @TContractState, class_hash: ClassHash, contract_address_salt: felt252, recipient: felt252, name: felt252, decimals: felt252, initial_supply: felt252, symbol: felt252) -> (core::starknet::contract_address::ContractAddress, core::array::Span::<core::felt252>);
+}
+
+#[starknet::contract]
+mod DeployTest {
+    use core::result::ResultTrait;
+    use starknet::syscalls::deploy_syscall;
+    use starknet::class_hash::ClassHash;
+    use starknet::contract_address::ContractAddress;
+    use starknet::class_hash::Felt252TryIntoClassHash;
+    use option::OptionTrait;
+    use traits::TryInto;
+    use array::ArrayTrait;
+
+    #[storage]
+    struct Storage {
+    }
+
+    #[external(v0)]
+    impl DeployTest of super::IDeployTest<ContractState> {
+        fn deploy_test(self: @ContractState, class_hash: ClassHash, contract_address_salt: felt252, recipient: felt252, name: felt252, decimals: felt252, initial_supply: felt252, symbol: felt252) -> (core::starknet::contract_address::ContractAddress, core::array::Span::<core::felt252>) {
+            let mut calldata = ArrayTrait::new();
+            calldata.append(recipient);
+            calldata.append(name);
+            calldata.append(decimals);
+            calldata.append(initial_supply);
+            calldata.append(symbol);
+            deploy_syscall(class_hash, contract_address_salt, calldata.span(), false).unwrap()
+        }
+    }
+}