⏫ Migrate test to foundry

contracts/test/levels/Stake.t.sol

@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import "forge-std/Test.sol";
+import {Utils} from "test/utils/Utils.sol";
+
+import {Stake} from "src/levels/Stake.sol";
+import {StakeFactory} from "src/levels/StakeFactory.sol";
+import {StakeAttack} from "src/attacks/StakeAttack.sol";
+import {Level} from "src/levels/base/Level.sol";
+import {Ethernaut} from "src/Ethernaut.sol";
+import {ERC20} from "openzeppelin-contracts-08/token/ERC20/ERC20.sol";
+
+import {console} from "forge-std/console.sol";
+contract TestStake is Test, Utils {
+    Ethernaut ethernaut;
+    Stake instance;
+
+    address payable owner;
+    address payable player;
+
+    /*//////////////////////////////////////////////////////////////
+                                 HELPERS
+    //////////////////////////////////////////////////////////////*/
+
+    function setUp() public {
+        address payable[] memory users = createUsers(2);
+
+        owner = users[0];
+        vm.label(owner, "Owner");
+
+        player = users[1];
+        vm.label(player, "Player");
+
+        vm.startPrank(owner);
+        ethernaut = getEthernautWithStatsProxy(owner);
+        StakeFactory factory = new StakeFactory();
+        ethernaut.registerLevel(Level(address(factory)));
+        vm.stopPrank();
+
+        vm.startPrank(player);
+        instance = Stake(payable(createLevelInstance(ethernaut, Level(address(factory)), 0.001 ether)));
+        vm.stopPrank();
+    }
+
+    /*//////////////////////////////////////////////////////////////
+                                 TESTS
+    //////////////////////////////////////////////////////////////*/
+
+    /// @notice Check the intial state of the level and enviroment.
+    function testInit() public {
+        vm.startPrank(player);
+        assertFalse(submitLevelInstance(ethernaut, address(instance)));
+    }
+
+    /// @notice Test the solution for the level.
+    function testSolve() public {
+        vm.deal(player, 1 ether);
+        vm.startPrank(player);
+
+        StakeAttack attacker = new StakeAttack();
+        attacker.attack{value: 0.001 ether + 2}(instance);
+
+        ERC20 dweth = ERC20(instance.WETH());
+        dweth.approve(address(instance), type(uint256).max);
+        instance.StakeWETH(0.001 ether + 1);
+        instance.Unstake(0.001 ether + 1);
+
+        assertTrue(submitLevelInstance(ethernaut, address(instance)));
+    }
+}