[STABLE-8131] Calculate tokenMessengerV2 proxy address instead of parsing from env (#55)

- Add flag in DeployProxiesV2 script to determine whether to read
`remoteTokenMessengerAddresses` from env variable.
- Add logic to use deterministic Create2 address calculation if not
reading from env.
- Update UT to test the false case. True case will most likely not get
used.
- TODO: Figure out a way to set flag to true based on test selector
before `setUp()` is run to test the true case

Author: dlee-circle

scripts/v2/DeployProxiesV2.s.sol

@@ -24,6 +24,7 @@ import {AdminUpgradableProxy} from "../../src/proxy/AdminUpgradableProxy.sol";
 import {TokenMessengerV2} from "../../src/v2/TokenMessengerV2.sol";
 import {TokenMinterV2} from "../../src/v2/TokenMinterV2.sol";
 import {MessageTransmitterV2} from "../../src/v2/MessageTransmitterV2.sol";
+import {AddressUtils} from "../../src/messages/v2/AddressUtils.sol";
 
 contract DeployProxiesV2Script is Script {
     // Expose for tests
@@ -150,15 +151,28 @@ contract DeployProxiesV2Script is Script {
             ""
         );
 
+        // Calculate TokenMessengerV2 proxy address
+        address expectedTokenMessengerV2ProxyAddress = vm.computeCreate2Address(
+            keccak256(type(TokenMessengerV2).creationCode),
+            keccak256(
+                proxyCreateCode
+            ),
+            factory
+        );
+
+        bool remoteTokenMessengerV2FromEnv = remoteTokenMessengerV2Addresses.length > 0;
+
         // Construct initializer
         bytes32[] memory remoteTokenMessengerAddresses = new bytes32[](
             remoteDomains.length
         );
         uint256 remoteDomainsLength = remoteDomains.length;
         for (uint256 i = 0; i < remoteDomainsLength; ++i) {
-            remoteTokenMessengerAddresses[i] = remoteTokenMessengerV2Addresses[
-                i
-            ];
+            if (remoteTokenMessengerV2FromEnv) {
+                remoteTokenMessengerAddresses[i] = remoteTokenMessengerV2Addresses[i];
+            } else {
+                remoteTokenMessengerAddresses[i] = AddressUtils.toBytes32(expectedTokenMessengerV2ProxyAddress);
+            }
         }
         bytes memory initializer = abi.encodeWithSelector(
             TokenMessengerV2.initialize.selector,
@@ -199,7 +213,6 @@ contract DeployProxiesV2Script is Script {
                 proxyCreateCode,
                 multiCallData
             );
-
         // Stop recording transations
         vm.stopBroadcast();
 
@@ -333,9 +346,11 @@ contract DeployProxiesV2Script is Script {
         );
         tokenControllerPrivateKey = vm.envUint("TOKEN_CONTROLLER_KEY");
 
-        remoteTokenMessengerV2Addresses = vm.envBytes32(
+        bytes32[] memory emptyRemoteTokenMessengerV2Addresses = new bytes32[](0);
+        remoteTokenMessengerV2Addresses = vm.envOr(
             "REMOTE_TOKEN_MESSENGER_V2_ADDRESSES",
-            ","
+            ",",
+            emptyRemoteTokenMessengerV2Addresses
         );
     }
 

test/scripts/v2/DeployProxiesV2.t.sol

@@ -105,9 +105,13 @@ contract DeployProxiesV2Test is ScriptV2TestUtils {
         // remote token messengers
         for (uint256 i = 0; i < remoteDomains.length; i++) {
             uint32 remoteDomain = remoteDomains[i];
+            bytes32 remoteTokenMessengerAddress = bytes32(uint256(uint160(address(tokenMessengerV2))));
+            if (remoteTokenMessengerV2FromEnv) {
+                remoteTokenMessengerAddress = bytes32(uint256(uint160(address(remoteTokenMessengerV2s[i]))));
+            }
             assertEq(
                 tokenMessengerV2.remoteTokenMessengers(remoteDomain),
-                bytes32(uint256(uint160(address(remoteTokenMessengerV2s[i]))))
+                remoteTokenMessengerAddress
             );
         }
         // admin

test/scripts/v2/ScriptV2TestUtils.sol

@@ -54,6 +54,7 @@ contract ScriptV2TestUtils is TestUtils {
     address[] remoteTokens;
     uint32[] remoteDomains;
     address[] remoteTokenMessengerV2s;
+    bool remoteTokenMessengerV2FromEnv = false;
     uint32 anotherRemoteDomain = 5;
     address anotherRemoteToken;
 
@@ -166,24 +167,26 @@ contract ScriptV2TestUtils is TestUtils {
                 )
             )
         );
-        vm.setEnv(
-            "REMOTE_TOKEN_MESSENGER_V2_ADDRESSES",
-            string(
-                abi.encodePacked(
-                    vm.toString(
-                        Message.addressToBytes32(remoteTokenMessengerV2s[0])
-                    ),
-                    ",",
-                    vm.toString(
-                        Message.addressToBytes32(remoteTokenMessengerV2s[1])
-                    ),
-                    ",",
-                    vm.toString(
-                        Message.addressToBytes32(remoteTokenMessengerV2s[2])
+        if (remoteTokenMessengerV2FromEnv) { // TODO: Figure out if there is a way to dynamically set this before setUp()
+            vm.setEnv(
+                "REMOTE_TOKEN_MESSENGER_V2_ADDRESSES",
+                string(
+                    abi.encodePacked(
+                        vm.toString(
+                            Message.addressToBytes32(remoteTokenMessengerV2s[0])
+                        ),
+                        ",",
+                        vm.toString(
+                            Message.addressToBytes32(remoteTokenMessengerV2s[1])
+                        ),
+                        ",",
+                        vm.toString(
+                            Message.addressToBytes32(remoteTokenMessengerV2s[2])
+                        )
                     )
                 )
-            )
-        );
+            );
+        }
 
         vm.setEnv(
             "MESSAGE_TRANSMITTER_V2_IMPLEMENTATION_ADDRESS",