remove admin and use governance owner as admin instead

ethereum/contracts/zksync/facets/Admin.sol

@@ -40,7 +40,7 @@ contract AdminFacet is Base, IAdmin {
     /// @notice Starts the transfer of admin rights. Only the current governor or admin can propose a new pending one.
     /// @notice New admin can accept admin rights by calling `acceptAdmin` function.
     /// @param _newPendingAdmin Address of the new admin
-    function setPendingAdmin(address _newPendingAdmin) external onlyGovernorOrAdmin {
+    function setPendingAdmin(address _newPendingAdmin) external onlyGovernor {
         // Save previous value into the stack to put it into the event later
         address oldPendingAdmin = s.pendingAdmin;
         // Change pending admin

ethereum/test/foundry/unit/concrete/Admin/Authorization.t.sol

@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity 0.8.20;
+
+import {AdminTest} from "./_Admin_Shared.t.sol";
+
+contract AuthorizationTest is AdminTest {
+    function test_SetPendingAdmin_RevertWhen() public {
+        address newAdmin = address(0x1337);
+        vm.prank(owner);
+        vm.expectRevert(bytes.concat("1g"));
+        proxyAsAdmin.setPendingAdmin(newAdmin);
+    }
+
+    function test_SetPendingAdmin_RevertWhen_AdminNotGovernanceOwner() public {
+        address newAdmin = address(0x1337);
+        vm.prank(owner);
+        vm.expectRevert(bytes.concat("1g"));
+        proxyAsAdmin.setPendingAdmin(newAdmin);
+    }
+}

ethereum/test/foundry/unit/concrete/Admin/_Admin_Shared.t.sol

@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.20;
+
+import {Test} from "forge-std/Test.sol";
+import {DiamondProxy} from "solpp/zksync/DiamondProxy.sol";
+import {DiamondInit} from "solpp/zksync/DiamondInit.sol";
+import {VerifierParams} from "solpp/zksync/Storage.sol";
+import {Diamond} from "solpp/zksync/libraries/Diamond.sol";
+import {AdminFacet} from "solpp/zksync/facets/Admin.sol";
+import {Governance} from "solpp/governance/Governance.sol";
+
+contract AdminTest is Test {
+    DiamondProxy internal diamondProxy;
+    address internal owner;
+    address internal securityCouncil;
+    Governance internal governor;
+    AdminFacet internal adminFacet;
+    AdminFacet internal proxyAsAdmin;
+
+    function getAdminSelectors() private view returns (bytes4[] memory) {
+        bytes4[] memory dcSelectors = new bytes4[](10);
+        dcSelectors[0] = adminFacet.setPendingGovernor.selector;
+        dcSelectors[1] = adminFacet.acceptGovernor.selector;
+        dcSelectors[2] = adminFacet.setPendingAdmin.selector;
+        dcSelectors[3] = adminFacet.acceptAdmin.selector;
+        dcSelectors[4] = adminFacet.setValidator.selector;
+        dcSelectors[5] = adminFacet.setPorterAvailability.selector;
+        dcSelectors[6] = adminFacet.setPriorityTxMaxGasLimit.selector;
+        dcSelectors[7] = adminFacet.executeUpgrade.selector;
+        dcSelectors[8] = adminFacet.freezeDiamond.selector;
+        dcSelectors[9] = adminFacet.unfreezeDiamond.selector;
+        return dcSelectors;
+    }
+
+    function setUp() public {
+        owner = makeAddr("owner");
+        securityCouncil = makeAddr("securityCouncil");
+        governor = new Governance(owner, securityCouncil, 10_000);
+        DiamondInit diamondInit = new DiamondInit();
+
+        VerifierParams memory dummyVerifierParams = VerifierParams({
+            recursionNodeLevelVkHash: 0,
+            recursionLeafLevelVkHash: 0,
+            recursionCircuitsSetVksHash: 0
+        });
+
+        adminFacet = new AdminFacet();
+
+        bytes memory diamondInitCalldata = abi.encodeWithSelector(
+            diamondInit.initialize.selector,
+            0x03752D8252d67f99888E741E3fB642803B29B155,
+            governor,
+            owner,
+            0x02c775f0a90abf7a0e8043f2fdc38f0580ca9f9996a895d05a501bfeaa3b2e21,
+            0,
+            0x0000000000000000000000000000000000000000000000000000000000000000,
+            0x70a0F165d6f8054d0d0CF8dFd4DD2005f0AF6B55,
+            dummyVerifierParams,
+            false,
+            0x0100000000000000000000000000000000000000000000000000000000000000,
+            0x0100000000000000000000000000000000000000000000000000000000000000,
+            500000 // priority tx max L2 gas limit
+        );
+
+        Diamond.FacetCut[] memory facetCuts = new Diamond.FacetCut[](1);
+        facetCuts[0] = Diamond.FacetCut({
+            facet: address(adminFacet),
+            action: Diamond.Action.Add,
+            isFreezable: false,
+            selectors: getAdminSelectors()
+        });
+
+        emit log_uint(facetCuts[0].selectors.length);
+
+        Diamond.DiamondCutData memory diamondCutData = Diamond.DiamondCutData({
+            facetCuts: facetCuts,
+            initAddress: address(diamondInit),
+            initCalldata: diamondInitCalldata
+        });
+
+        diamondProxy = new DiamondProxy(block.chainid, diamondCutData);
+        proxyAsAdmin = AdminFacet(address(diamondProxy));
+    }
+}