test: add fixture for deploying router

this uses teh getCode / deployCode cheatcodes under the hood to deploy both WETH9 and V3Factory which are stored as compiled artifacts
gakonst · Mar 11, 2022 · 0d2ece5 · 0d2ece5
1 parent 604c928
commit 0d2ece5
Showing 1 changed file with 36 additions and 0 deletions.
diff --git a/contracts/foundry-tests/Deploy.t.sol b/contracts/foundry-tests/Deploy.t.sol
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+pragma solidity ^0.7.6;
+
+import "./utils/Test.sol";
+
+import "contracts/SwapRouter.sol";
+
+import "@uniswap/v3-core/contracts/interfaces/IUniswapV3Factory.sol";
+import "@uniswap/v3-core/contracts/interfaces/IERC20Minimal.sol";
+
+// Artifact paths for deploying from the deps folder, assumes that the command is run from
+// the project root.
+string constant v3FactoryArtifact = "node_modules/@uniswap/v3-core/artifacts/contracts/UniswapV3Factory.sol/UniswapV3Factory.json";
+string constant weth9Artifact = "test/contracts/WETH9.json";
+
+interface WETH9 is IERC20Minimal {
+    function deposit() payable external;
+}
+
+// Base fixture deploying V3 Factory, V3 Router and WETH9
+contract V3RouterFixture is Test {
+    IUniswapV3Factory public factory;
+    WETH9 public weth9;
+    SwapRouter public router;
+
+    // Deploys WETH9 and V3 Core's Factory contract, and then
+    // hooks them on the router
+    function setUp() virtual public {
+        address _weth9 = deployCode(weth9Artifact);
+        weth9 = WETH9(_weth9);
+
+        address _factory = deployCode(v3FactoryArtifact);
+        factory = IUniswapV3Factory(_factory);
+
+        router = new SwapRouter(_factory, _weth9);
+    }
+}