dxdaoTimeLock

contracts/misc/TimeLock.sol

@@ -0,0 +1,26 @@
+pragma solidity ^0.5.17;
+
+
+contract TimeLock {
+
+    address public owner;
+    uint256 public releaseTime;
+
+    constructor(address _owner, uint256 _releaseTime) public {
+        owner = _owner;
+        releaseTime = _releaseTime;
+    }
+
+    function () external payable {
+    }
+
+    function withdraw() external {
+        require(msg.sender == owner, "only owner can withdraw");
+       // solhint-disable-next-line not-rely-on-time
+        require(releaseTime < now, "cannot withdraw before releaseTime");
+          // solhint-disable-next-line avoid-call-value
+        (bool success, ) = owner.call.value(address(this).balance)("");
+        require(success, "sendEther failed.");
+    }
+
+}

contracts/test/Wallet.sol

@@ -27,4 +27,12 @@ contract Wallet is Ownable {
         emit Pay(_beneficiary, amount);
     }
 
+    function genericCall(address _contract, bytes memory _encodedABI)
+    public
+    returns(bool success, bytes memory returnValue) {
+       // solhint-disable-next-line avoid-low-level-calls
+        (success, returnValue) = _contract.call(_encodedABI);
+        require(success, "call fail");
+    }
+
 }

test/timelock.js

@@ -0,0 +1,45 @@
+const helpers = require('./helpers');
+
+const Wallet = artifacts.require("./Wallet.sol");
+const TimeLock = artifacts.require("./TimeLock.sol");
+contract('TimeLock', accounts => {
+
+    it("sendEther", async () => {
+        var wallet =  await Wallet.new();
+        await wallet.initialize(accounts[0]);
+        var owner = wallet.address;
+        var block = await web3.eth.getBlock("latest");
+        var releaseTime = block.timestamp + (30*60*60*24);
+        var timeLock = await TimeLock.new(owner,releaseTime);
+        assert.equal(await timeLock.owner(), owner);
+        assert.equal(await timeLock.releaseTime(), releaseTime);
+
+        //send funds to wallet
+        await web3.eth.sendTransaction({from:accounts[0],to:owner, value: web3.utils.toWei('10', "ether")});
+        assert.equal(await web3.eth.getBalance(owner), web3.utils.toWei('10', "ether"));
+        await wallet.pay(timeLock.address);
+        await wallet.pay(timeLock.address);
+        assert.equal(await web3.eth.getBalance(timeLock.address), web3.utils.toWei('10', "ether"));
+
+        var encodedABI = await new web3.eth.Contract(timeLock.abi)
+                                .methods
+                                .withdraw()
+                                .encodeABI();
+
+        try {
+            await wallet.genericCall(timeLock.address, encodedABI);
+            throw 'cannot withdraw before time';
+        } catch (error) {
+            helpers.assertVMException(error);
+        }
+        await helpers.increaseTime((30*60*60*24)+1);
+        try {
+            await timeLock.withdraw();
+            throw 'only Owner can withdraw';
+        } catch (error) {
+            helpers.assertVMException(error);
+        }
+        await wallet.genericCall(timeLock.address, encodedABI);
+        assert.equal(await web3.eth.getBalance(owner), web3.utils.toWei('10', "ether"));
+    });
+});