dexorder

lib_forge_std/test/Vm.t.sol

@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: MIT
+pragma solidity >=0.8.0 <0.9.0;
+
+import {Test} from "../src/Test.sol";
+import {Vm, VmSafe} from "../src/Vm.sol";
+
+contract VmTest is Test {
+    // This test ensures that functions are never accidentally removed from a Vm interface, or
+    // inadvertently moved between Vm and VmSafe. This test must be updated each time a function is
+    // added to or removed from Vm or VmSafe.
+    function test_interfaceId() public pure {
+        assertEq(type(VmSafe).interfaceId, bytes4(0xdf5d274d), "VmSafe");
+        assertEq(type(Vm).interfaceId, bytes4(0xb91a22ba), "Vm");
+    }
+}