refactor: add constructor tests

Author: passandscore

contracts/test/core/GasTankDepositorTest.sol

@@ -26,6 +26,24 @@ contract GasTankDepositorTest is Test {
         _gasTankDepositorImpl = new GasTankDepositor(rpcService, MAXIMUM_DEPOSIT);
     }
 
+    //=======================TESTS FOR CONSTRUCTOR=======================
+
+    function testConstructorRevertsWhenRpcServiceIsZeroAddress() public {
+        vm.expectRevert(abi.encodeWithSelector(GasTankDepositor.RPCServiceNotSet.selector, ZERO_ADDRESS));
+        new GasTankDepositor(ZERO_ADDRESS, MAXIMUM_DEPOSIT);
+    }
+
+    function testConstructorRevertsWhenMaximumDepositIsZero() public {
+        vm.expectRevert(abi.encodeWithSelector(GasTankDepositor.MaximumDepositNotMet.selector, 0, 0));
+        new GasTankDepositor(rpcService, 0);
+    }
+
+    function testConstructorSetsVariables() public view {
+        assertEq(_gasTankDepositorImpl.RPC_SERVICE(), rpcService);
+        assertEq(_gasTankDepositorImpl.MAXIMUM_DEPOSIT(), MAXIMUM_DEPOSIT);
+        assertEq(_gasTankDepositorImpl.GAS_TANK_ADDRESS(), address(_gasTankDepositorImpl));
+    }
+
     //=======================TESTS=======================
 
     function testSetsDelegationCodeAtAddress() public {