# Supply Exercises In this exercise, you'll learn how to supply tokens into Aave V3. The starter code for this exercise is provided in `foundry/src/exercises/Supply.sol` Solution is provided in `foundry/src/solutions/Supply.sol` ## Task 1 - Supply token to Aave V3 pool ```solidity function supply(address token, uint256 amount) public { // Task 1.1 - Transfer token from msg.sender // Task 1.2 - Approve the pool contract to spend token // Task 1.3 - Supply token to the pool } ``` Implement the `supply` function to deposit `token` into Aave V3. - `token` is the token to deposit - `amount` is the amount of `token` to deposit > Hint - Call `pool.supply` ## Task 2 - Get supply balance ```solidity function getSupplyBalance(address token) public view returns (uint256) { // Balance of the token that can be withdrawn is the balance of aToken // Task 2.1 - Get the aToken address // Task 2.2 - Get the balance of aToken for this contract } ``` Implement the `getSupplyBalance` function. This function must return the balance of supplied token with interest. > Hints > > - Query the AToken for `token` to get the balance of supplied token. > - Call `pool.getReserveData` to get the address of AToken ## Test ```shell forge test --fork-url $FORK_URL --fork-block-number $FORK_BLOCK_NUM --match-path test/Supply.test.sol -vvv ```