add tests

test/delegation.js

@@ -21,6 +21,27 @@ config({
       }
   });
 
+  /**
+   *  Delegations: Root, Sticker Market, ENS Usernames, Version Listings 
+   *  Functions:
+   *   - Root
+   *   - Sticker Market
+   *        - change controller : Absolute Majority 
+   *        - change rates : Simple Majority 
+   *        - purgconte pack : Simple Majority
+   *   - ENS Usernames
+   *        - change controller : Simple Majority
+   *        - migrate registry : 
+   *        - change price
+   *   - Version Listing
+   *        - change developer address
+   *        - remove version
+   *        - add release category (android,ios,linux,etc) 
+   * 
+   * 
+   * 
+   */
+
 contract("DelegationBase", function() {
     this.timeout(0);
     var defaultDelegate;
@@ -129,6 +150,7 @@ contract("DelegationBase", function() {
     })    
 
     it("Child a2 delegate to a4", async function () {
+  
         result = await ChildDelegation.methods.delegate(accounts[4]).send({from: accounts[2]})
         const delegateArgs = result.events.Delegate.returnValues;
         assert.equal(delegateArgs.who, accounts[2])
@@ -137,6 +159,7 @@ contract("DelegationBase", function() {
         result = await ChildDelegation.methods.delegatedTo(accounts[2]).call()
         assert.equal(result, accounts[4])
         
+        
         result = await ChildDelegation.methods.delegationOf(accounts[0]).call()
         assert.equal(result, defaultDelegate)
         result = await ChildDelegation.methods.delegationOf(accounts[1]).call()
@@ -144,7 +167,27 @@ contract("DelegationBase", function() {
         result = await ChildDelegation.methods.delegationOf(accounts[2]).call()
         assert.equal(result, defaultDelegate)
 
-        
+         
     })    
 
+    it("default delegate should be able to delegate", async function () {
+        await ChildDelegation.methods.delegate(accounts[6]).send({from: accounts[6]})
+        newDelegate = await ChildDelegation.methods.delegationOf(accounts[6]).call()
+        result = await ChildDelegation.methods.delegate(accounts[6]).send({from: defaultDelegate})
+        const delegateArgs = result.events.Delegate.returnValues;
+        assert.equal(delegateArgs.who, defaultDelegate)
+        assert.equal(delegateArgs.to, accounts[6])
+        
+        result = await ChildDelegation.methods.delegatedTo(defaultDelegate).call()
+        assert.equal(result, accounts[6])
+        
+        result = await ChildDelegation.methods.delegationOf(accounts[0]).call()
+        assert.equal(result, newDelegate)
+        result = await ChildDelegation.methods.delegationOf(accounts[1]).call()
+        assert.equal(result, newDelegate)
+        result = await ChildDelegation.methods.delegationOf(accounts[2]).call()
+        assert.equal(result, newDelegate)
+
+        
+    })   
 })

test/proposal.js

@@ -0,0 +1,378 @@
+const utils = require("../utils/testUtils")
+
+
+const DefaultDelegation = require('Embark/contracts/DefaultDelegation');
+const DelegationFactory = require('Embark/contracts/DelegationFactory');
+const MiniMeToken = require('Embark/contracts/MiniMeToken');
+const Delegation = require('Embark/contracts/Delegation');
+const ProposalFactory = require('Embark/contracts/ProposalFactory');
+const Proposal = require('Embark/contracts/Proposal');
+const ProposalBase = require('Embark/contracts/ProposalBase');
+
+config({
+    contracts: {
+        "MiniMeTokenFactory": {
+        },
+        "MiniMeToken": {
+            "args": [
+                "$MiniMeTokenFactory",
+                utils.zeroAddress,
+                0,
+                "TestMiniMeToken",
+                18,
+                "TST",
+                true
+            ]
+        },
+        "DefaultDelegation": {
+            "args": [ "$accounts[5]" ]
+        },
+        "DelegationBase": {
+            "args": [ utils.zeroAddress ]
+        },
+        "DelegationInit": {},
+        "DelegationFactory": {
+            "args": ["$DelegationBase", "$DelegationInit", utils.zeroAddress]
+        },
+        "ProposalBase": {},
+        "ProposalInit": {},
+        "ProposalFactory": {
+            "args": ["$ProposalBase", "$ProposalInit", utils.zeroAddress]
+        }
+
+      }
+  });
+function mintTokens(accounts, amount) {
+    return Promise.all(
+        accounts.map((account) => {
+            return MiniMeToken.methods.generateTokens(account, amount).send({from: accounts[0]});
+        })
+    );
+}
+
+function newDelegation(topDelegation) {
+    return new Promise((resolve, reject) => {
+        DelegationFactory.methods.createDelegation(topDelegation).send().on('receipt', (receipt) => {
+            resolve(new web3.eth.Contract(Delegation._jsonInterface, receipt.events.InstanceCreated.returnValues[0]));
+        }).on('error', (error) => {
+            reject(error);
+        });
+    });
+    
+}
+
+async function addGas(call, from, amount=21000) {
+    return call.send({
+        gas: await call.estimateGas({gas: 8000000})+amount,
+        from: from
+    });
+}
+
+async function tabulateDirect(proposal, account) {
+    return addGas(proposal.methods.tabulateDirect(account), web3.eth.defaultAccount);
+}
+
+async function tabulateDelegated(proposal, account) {
+    return addGas(proposal.methods.tabulateDelegated(account), web3.eth.defaultAccount);
+}
+
+async function tabulateSigned(proposal, sig) {
+    return addGas(
+        proposal.methods.tabulateSigned(
+            sig.vote,
+            sig.position,
+            sig.proof,
+            sig.signature
+        ),
+        web3.eth.defaultAccount
+    );
+}
+
+
+contract("Proposal", function() {
+    this.timeout(0);
+    const initialBalance = 17 * 10 ^ 18;
+    var defaultDelegate;
+    var accounts;
+    var RootDelegation;
+    var ChildDelegation;
+
+    before(function(done) {
+        defaultDelegate = DefaultDelegation._address;
+        web3.eth.getAccounts().then((res) => {
+            web3.eth.defaultAccount = res[0]
+            accounts = res;
+            //let contactList = require("./contacts.json")
+            //contacts = Object.keys(contactList).map((key) => { return { name: contactList[key].name.en, address: utils.pubKeyToAddress(key), pubKey: key }})
+            //res = accounts.concat(contacts.map((obj) => {return obj.address } ));
+            mintTokens(res, initialBalance).then((mintReceipts) => {
+                newDelegation(defaultDelegate).then((createdRoot) => {
+                    RootDelegation = createdRoot;
+                    newDelegation(RootDelegation._address).then((createdChild) => {
+                        ChildDelegation = createdChild;
+                        Promise.all([ 
+                            // root: 0 -> 1 -> 2 -> 3 (-> 5) 
+                            RootDelegation.methods.delegate(accounts[1]).send({from: accounts[0]}),
+                            RootDelegation.methods.delegate(accounts[2]).send({from: accounts[1]}),
+                            RootDelegation.methods.delegate(accounts[3]).send({from: accounts[2]}),
+                            // root: 4 -> 4
+                            RootDelegation.methods.delegate(accounts[4]).send({from: accounts[4]}),
+
+                            // root: 6 -> 7 -> 8 -> 9 -> 6 (circular)
+                            RootDelegation.methods.delegate(accounts[7]).send({from: accounts[6]}),
+                            RootDelegation.methods.delegate(accounts[8]).send({from: accounts[7]}),
+                            RootDelegation.methods.delegate(accounts[9]).send({from: accounts[8]}),
+                            RootDelegation.methods.delegate(accounts[6]).send({from: accounts[9]}),
+                            // child: 5 -> 6
+                            ChildDelegation.methods.delegate(accounts[7]).send({from: accounts[5]})
+                        ]).then((delegateReceipts) => {
+                            done();
+                        })
+                    })
+                })
+            });
+        }); 
+    });
+
+    const QUORUM_QUALIFIED = 0;
+    const QUORUM_MAJORITY = 1;
+    const QUORUM_SIMPLE = 2;
+
+    const VOTE_NULL = 0;
+    const VOTE_REJECT = 1;
+    const VOTE_APPROVE = 2;
+
+    var testProposal;
+    var blockStart 
+    it("create proposal by factory", async function () {
+        let tabulationBlockDelay = 50;
+        blockStart = await web3.eth.getBlockNumber() + 10;
+        let blockEndDelay = 10;
+        receipt = await ProposalFactory.methods.createProposal(
+            MiniMeToken._address, 
+            RootDelegation._address, 
+            "0xDA0", 
+            tabulationBlockDelay, 
+            blockStart, 
+            blockEndDelay, 
+            QUORUM_QUALIFIED
+        ).send()
+        testProposal = new web3.eth.Contract(ProposalBase._jsonInterface, receipt.events.InstanceCreated.returnValues[0]);
+        
+    });
+    
+    it("rejects signed and direct votes while not voting period ", async function () { 
+        assert(await web3.eth.getBlockNumber() < blockStart, "Wrong block number")
+        assert(await utils.assertEVMException(testProposal.methods.voteDirect(VOTE_APPROVE).send({from: accounts[0]}), "Voting not started"), "Didnt rejected")
+        assert(await utils.assertEVMException(testProposal.methods.voteSigned(utils.zeroBytes32).send({from: accounts[0]}), "Voting not started"), "Didnt rejected")
+    });
+
+
+    it("increases block number to vote block start", async function () {
+        await utils.setBlockNumber(blockStart);
+        assert(await web3.eth.getBlockNumber() >= blockStart, "Wrong block number")
+    }); 
+
+
+    it("direct vote", async function () { 
+        let receipt = await testProposal.methods.voteDirect(VOTE_APPROVE).send({from: accounts[5]});
+        assert.equal(receipt.events.Voted.returnValues[0], VOTE_APPROVE)
+        assert.equal(receipt.events.Voted.returnValues[1], accounts[5]);
+    });   
+
+    const { MerkleTree } = require('../utils/merkleTree.js');
+    var sigs = [];
+
+
+    it("signed vote at voting period", async function () { 
+        let vote = VOTE_APPROVE;
+        let approveHash = await testProposal.methods.getVoteHash(vote).call();
+        let signatures = await Promise.all(accounts.map((address) => {
+            //in web app should web3.eth.personal.sign(approveHash, address)
+            return web3.eth.sign(approveHash, address);    
+        }))
+        let merkleTree = new MerkleTree(signatures);    
+        let merkleRoot = merkleTree.getHexRoot();
+        
+        let receipt = await testProposal.methods.voteSigned(merkleRoot).send({from: accounts[0]})
+        let position = 0;
+        assert.equal(receipt.events.VoteSignatures.returnValues[0], position)
+        assert.equal(receipt.events.VoteSignatures.returnValues[1], merkleRoot);
+        for(var i = 0; i < signatures.length; i++) {
+            sigs.push ({ 
+                position: position, 
+                vote: vote,
+                signature: signatures[i],
+                proof: merkleTree.getHexProof(signatures[i]),
+                signer: accounts[i]
+            })
+            
+        }
+    });    
+    var voteBlockEnd;
+    it("tests under block end", async function () {
+        voteBlockEnd = await testProposal.methods.voteBlockEnd().call();
+        assert(await web3.eth.getBlockNumber() <= voteBlockEnd, "Current block number is too low for testing");
+    })
+
+    it("reject tabulateDirect when voting not ended", async function () {
+        assert(await utils.assertEVMException(tabulateDirect(testProposal, accounts[5]), "Block end not reached"), "Didnt rejected")
+    }); 
+
+    it("reject tabulateDelegated when voting not ended", async function () {
+        assert(await utils.assertEVMException(tabulateDelegated(testProposal, accounts[0]), "Block end not reached"), "Didnt rejected")
+    }); 
+
+    it("reject tabulateSigned when voting not ended", async function () {
+        assert(await utils.assertEVMException(tabulateSigned(testProposal, sigs[0]), "Block end not reached"), "Didnt rejected")
+    }); 
+    
+    it("increases block number to vote block end", async function () {
+        await utils.setBlockNumber(voteBlockEnd+1);
+        assert(await web3.eth.getBlockNumber() > voteBlockEnd, "Wrong block number")
+    }); 
+
+    it("rejects direct votes when voting period ended", async function () { 
+        assert(await utils.assertEVMException(testProposal.methods.voteDirect(VOTE_APPROVE).send({from: accounts[1]}), "Voting ended"), "Didnt rejected")
+    });
+
+    it("rejects signed votes when voting period ended", async function () { 
+        assert(await utils.assertEVMException(testProposal.methods.voteSigned(utils.zeroBytes32).send({from: accounts[0]}), "Voting ended"), "Didnt rejected")
+    });
+
+    it("reject tabulates when no delegate voted", async function () {;
+        assert(await utils.assertEVMException(tabulateDelegated(testProposal, accounts[4]), "No delegate vote found"), "Didnt rejected 2")
+    }); 
+
+    
+    it("tabulates influence from self voter", async function () {
+        let receipt = await tabulateDirect(testProposal, accounts[5]);
+        assert.equal(receipt.events.Claimed.returnValues[0], VOTE_APPROVE)
+        assert.equal(receipt.events.Claimed.returnValues[1], accounts[5]);
+        assert.equal(receipt.events.Claimed.returnValues[2], accounts[5]);
+
+    });    
+
+    it("tabulates influence from default delegate", async function () { 
+        receipt = await tabulateDelegated(testProposal, accounts[3]);
+        assert.equal(receipt.events.Claimed.returnValues[0], VOTE_APPROVE)
+        assert.equal(receipt.events.Claimed.returnValues[1], accounts[5]);
+        assert.equal(receipt.events.Claimed.returnValues[2], accounts[3]);
+
+    });    
+
+    it("tabulates influence from voteSigned ", async function () { 
+        let sig = sigs[2];
+        let receipt = await tabulateSigned(testProposal, sig);
+        assert.equal(receipt.events.Voted.returnValues[0], sig.vote, "emit Voted wrong Vote")
+        assert.equal(receipt.events.Voted.returnValues[1], sig.signer, "emit Voted wrong address");
+        assert.equal(receipt.events.Claimed.returnValues[0], sig.vote, "emit Claimed wrong Vote")
+        assert.equal(receipt.events.Claimed.returnValues[1], sig.signer, "emit Claimed wrong claimer");
+        assert.equal(receipt.events.Claimed.returnValues[2], sig.signer, "emit Claimed wrong source");
+    });  
+
+
+    it("should not tabulate for delegate if voted ", async function () { 
+        assert(await utils.assertEVMException(tabulateDelegated(testProposal, accounts[2]), "Not delegatable"), "Didnt rejected ")
+        assert(await utils.assertEVMException(tabulateDelegated(testProposal, accounts[5]), "Not delegatable"), "Didnt rejected 2")
+    });  
+
+    it("tabulates influence from direct delegate ", async function () { 
+        let receipt = await tabulateDelegated(testProposal, accounts[1]);
+        assert.equal(receipt.events.Claimed.returnValues[0], VOTE_APPROVE)
+        assert.equal(receipt.events.Claimed.returnValues[1], accounts[2]);
+        assert.equal(receipt.events.Claimed.returnValues[2], accounts[1])
+    });  
+
+    it("tabulates influence from indirect delegate", async function () { 
+        let receipt = await tabulateDelegated(testProposal, accounts[0]);
+        assert.equal(receipt.events.Claimed.returnValues[0], VOTE_APPROVE)
+        assert.equal(receipt.events.Claimed.returnValues[1], accounts[2]);
+        assert.equal(receipt.events.Claimed.returnValues[2], accounts[0])
+    });    
+
+    it("should not tabulate influence from circular delegation chain when none voted", async function () { 
+        assert(await utils.assertEVMException(tabulateDelegated(testProposal, accounts[7]), "revert"), "Didnt rejected ")
+    });    
+
+
+    it("tabulates signature from circular delegation", async function () { 
+        await tabulateSigned(testProposal, sigs[7]);
+    })
+
+    it("tabulates influence from circular direct delegate", async function () { 
+        var receipt = await tabulateDelegated(testProposal, accounts[6]);
+        assert.equal(receipt.events.Claimed.returnValues[0], VOTE_APPROVE)
+        assert.equal(receipt.events.Claimed.returnValues[1], accounts[7]);
+        assert.equal(receipt.events.Claimed.returnValues[2], accounts[6])
+    })
+    
+    it("tabulates influence from circular indirect delegate", async function () { 
+        receipt = await tabulateDelegated(testProposal, accounts[9]);
+        assert.equal(receipt.events.Claimed.returnValues[0], VOTE_APPROVE)
+        assert.equal(receipt.events.Claimed.returnValues[1], accounts[7]);
+        assert.equal(receipt.events.Claimed.returnValues[2], accounts[9])
+    })
+    it("tabulates influence from circular delegate of claiming delegate", async function () { 
+        receipt = await tabulateDelegated(testProposal, accounts[8]);
+        assert.equal(receipt.events.Claimed.returnValues[0], VOTE_APPROVE)
+        assert.equal(receipt.events.Claimed.returnValues[1], accounts[7]);
+        assert.equal(receipt.events.Claimed.returnValues[2], accounts[8])
+    })
+
+    it("retabulates influence to self vote", async function () {
+        sig = sigs[6];
+        receipt = await tabulateSigned(testProposal, sig);
+        assert.equal(receipt.events.Voted.returnValues[0], sig.vote, "emit Voted wrong Vote")
+        assert.equal(receipt.events.Voted.returnValues[1], sig.signer, "emit Voted wrong address");
+        assert.equal(receipt.events.Claimed.returnValues[0], sig.vote, "emit Claimed wrong Vote")
+        assert.equal(receipt.events.Claimed.returnValues[1], sig.signer, "emit Claimed wrong claimer");
+        assert.equal(receipt.events.Claimed.returnValues[2], sig.signer, "emit Claimed wrong source");
+    
+    });  
+    
+    it("retabulates influence to indirect delegate", async function () { 
+        receipt = await tabulateDelegated(testProposal, accounts[8]);
+        assert.equal(receipt.events.Claimed.returnValues[0], VOTE_APPROVE)
+        assert.equal(receipt.events.Claimed.returnValues[1], accounts[6]);
+        assert.equal(receipt.events.Claimed.returnValues[2], accounts[8])
+    });    
+
+    it("retabulates influence to direct delegate", async function () {
+        receipt = await tabulateDelegated(testProposal, accounts[9]);
+        assert.equal(receipt.events.Claimed.returnValues[0], VOTE_APPROVE)
+        assert.equal(receipt.events.Claimed.returnValues[1], accounts[6]);
+        assert.equal(receipt.events.Claimed.returnValues[2], accounts[9])
+    });    
+      
+    it("create proposal by factory", async function () {
+        let tabulationBlockDelay = 50;
+        blockStart = await web3.eth.getBlockNumber();
+        let blockEndDelay = 10;
+        receipt = await ProposalFactory.methods.createProposal(
+            MiniMeToken._address, 
+            ChildDelegation._address, 
+            "0xDA0", 
+            tabulationBlockDelay, 
+            blockStart, 
+            blockEndDelay, 
+            QUORUM_QUALIFIED
+        ).send()
+        testProposal = new web3.eth.Contract(ProposalBase._jsonInterface, receipt.events.InstanceCreated.returnValues[0]);
+    });
+
+    it("child delegation default parent chain break", async function () { 
+        
+    });    
+    it("child delegation indirect parent chain break", async function () { 
+
+    });    
+    it("child delegation parent chain full break", async function () { 
+
+    });    
+
+
+
+
+    
+})

utils/merkleTree.js

@@ -0,0 +1,133 @@
+const { sha3, bufferToHex } = require('ethereumjs-util');
+
+class MerkleTree {
+  constructor(elements) {
+    // Filter empty strings and hash elements
+    this.elements = elements.filter(el => el).map(el => sha3(el));
+
+    // Deduplicate elements
+    this.elements = this.bufDedup(this.elements);
+    // Sort elements
+    this.elements.sort(Buffer.compare);
+
+    // Create layers
+    this.layers = this.getLayers(this.elements);
+  }
+
+  getLayers(elements) {
+    if (elements.length == 0) {
+      return [[""]];
+    }
+
+    const layers = [];
+    layers.push(elements);
+
+    // Get next layer until we reach the root
+    while (layers[layers.length - 1].length > 1) {
+      layers.push(this.getNextLayer(layers[layers.length - 1]));
+    }
+
+    return layers;
+  }
+
+  getNextLayer(elements) {
+    return elements.reduce((layer, el, idx, arr) => {
+      if (idx % 2 === 0) {
+        // Hash the current element with its pair element
+        layer.push(this.combinedHash(el, arr[idx + 1]));
+      }
+
+      return layer;
+    }, []);
+  }
+
+  combinedHash(first, second) {
+    if (!first) { return second; }
+    if (!second) { return first; }
+
+    return sha3(this.sortAndConcat(first, second));
+  }
+
+  getRoot() {
+    return this.layers[this.layers.length - 1][0];
+  }
+
+  getHexRoot() {
+    return bufferToHex(this.getRoot());
+  }
+
+  getProof(el) {
+    let idx = this.bufIndexOf(el, this.elements);
+
+    if (idx === -1) {
+      throw new Error("Element does not exist in Merkle tree");
+    }
+
+    return this.layers.reduce((proof, layer) => {
+      const pairElement = this.getPairElement(idx, layer);
+
+      if (pairElement) {
+        proof.push(pairElement);
+      }
+
+      idx = Math.floor(idx / 2);
+
+      return proof;
+    }, []);
+  }
+
+  getHexProof(el) {
+    const proof = this.getProof(el);
+
+    return this.bufArrToHex(proof);
+  }
+
+  getPairElement(idx, layer) {
+    const pairIdx = idx % 2 === 0 ? idx + 1 : idx - 1;
+
+    if (pairIdx < layer.length) {
+      return layer[pairIdx];
+    } else {
+      return null;
+    }
+  }
+
+  bufIndexOf(el, arr) {
+    let hash;
+
+    // Convert element to 32 byte hash if it is not one already
+    if (el.length !== 32 || !Buffer.isBuffer(el)) {
+      hash = sha3(el);
+    } else {
+      hash = el;
+    }
+
+    for (let i = 0; i < arr.length; i++) {
+      if (hash.equals(arr[i])) {
+        return i;
+      }
+    }
+
+    return -1;
+  }
+
+  bufDedup(elements) {
+    return elements.filter((el, idx) => {
+      return this.bufIndexOf(el, elements) === idx;
+    });
+  }
+
+  bufArrToHex(arr) {
+    if (arr.some(el => !Buffer.isBuffer(el))) {
+      throw new Error("Array is not an array of buffers");
+    }
+    
+    return arr.map(el => '0x' + el.toString('hex'));
+  }
+
+  sortAndConcat(...args) {
+    return Buffer.concat([...args].sort(Buffer.compare));
+  }
+}
+
+exports.MerkleTree = MerkleTree;

utils/testUtils.js

@@ -43,6 +43,13 @@ exports.addressToBytes32 = (address) => {
     return "0x" + stringed.substring(stringed.length - 64, stringed.length); 
 }
 
+exports.pubKeyToAddress = (contactCode) => {
+    if(contactCode.length != 132 || contactCode.substring(0,4) != "0x04") {
+        throw "Invalid contact code: " +contactCode;
+    }
+    return web3.utils.toChecksumAddress("0x" + web3.utils.soliditySha3({t: 'bytes', v: ("0x" + contactCode.substring(4))}).substring(26));
+}
+
 
 // OpenZeppelin's expectThrow helper -
 // Source: https://github.com/OpenZeppelin/zeppelin-solidity/blob/master/test/helpers/expectThrow.js
@@ -200,6 +207,73 @@ exports.ensureException = function(error) {
     assert(isException(error), error.toString());
 };
 
+const NO_ERROR = 0;
+const FATAL_ERROR = 1;
+const OUT_OF_GAS = 2;
+const USER_ERROR = 3;
+
+exports.getEVMException = async function(sendFn) {
+    var error = null;
+    try {
+        await sendFn.estimateGas();
+    } catch(e) {
+        var a = e.toString().split(": ");
+        if(a[0] != "RuntimeError" || a[1] != "VM Exception while processing transaction") {
+          throw e;
+        }
+        
+        switch (a[3]){
+          case "out of gas":
+          case "invalid opcode":
+          case "invalid JUMP":
+          case "stack overflow":
+          case "revert":
+            error = a[3]
+            break;
+          default:
+            if(a[3].startsWith("revert ")){
+              error = a[3].substring(7)
+            } else {
+              error = a[3];
+            }  
+        }
+    }
+}
+
+exports.assertEVMException = async function(sendFn, error="") {
+    try {
+        await sendFn;
+        return false;
+    } catch (e) {
+        let strError = e.toString();
+        if(error == ""){
+            return strError.includes('invalid opcode') || strError.includes('invalid JUMP') || strError.includes('revert');   
+        } else {
+            return strError.includes(error);
+        }
+    }
+    
+};
+
+
+
+exports.strictEVMException = async function(sendFn, error="") {
+    try {
+        await sendFn;
+        return false;
+    } catch (e) {
+        let strError = e.toString();
+        if(error == ""){
+            return strError.includes('invalid opcode') || strError.includes('invalid JUMP') || strError.includes('revert');   
+        } else {
+            return strError.includes(error);
+        }
+    }
+    
+};
+
+
+
 function isException(error) {
     let strError = error.toString();
     return strError.includes('invalid opcode') || strError.includes('invalid JUMP') || strError.includes('revert');
@@ -207,33 +281,100 @@ function isException(error) {
 
 exports.increaseTime = async (amount) => {
     return new Promise(function(resolve, reject) {
-      web3.currentProvider.sendAsync(
+      web3.currentProvider.send(
         {
           jsonrpc: '2.0',
           method: 'evm_increaseTime',
           params: [+amount],
           id: new Date().getSeconds()
-        },
-        async (error) => {
+        }, (error) => {
             if (error) {
-            console.log(error);
-            return reject(err);
-          }
-          await web3.currentProvider.sendAsync(
-            {
+                reject(err);
+            } else {
+                web3.currentProvider.send({
                     jsonrpc: '2.0',
                     method: 'evm_mine',
                     params: [],
                     id: new Date().getSeconds()
                 }, (error) => {
                     if (error) {
-                console.log(error);
-                return reject(err);
-              }
+                        reject(err);
+                    }else {
                         resolve();
                     }
-          )
+                })
             }
-      )
+        })
     });
 }
+
+exports.setTime = async (timestamp) => {
+    return new Promise(function(resolve, reject) { 
+        web3.currentProvider.send({
+          jsonrpc: '2.0',
+          method: 'evm_mine',
+          params: [+timestamp],
+          id: new Date().getSeconds()
+        }, (error,s)=>{
+            if(error) {
+                reject(error);
+            } else {
+                resolve();
+            }
+        })
+    })
+}
+
+exports.increaseBlock = (amount) => {
+    return new Promise(function(resolve, reject) {
+        web3.currentProvider.send(
+            {
+            jsonrpc: '2.0',
+            method: 'evm_mine',
+            params: [],
+            id: new Date().getSeconds()
+            },
+            (error,s)=>{
+                if(error) {
+                    reject(error);
+                } else {
+                    if(amount == 1) {
+                        resolve()
+                    }else {
+                        exports.increaseBlock(amount-1).then(() => {
+                            resolve();
+                        })
+                    }
+                    
+                }
+            })
+    })
+}
+
+exports.setBlockNumber = (newBlockNumber) => {
+    return new Promise((resolve, reject) => {
+        web3.eth.getBlockNumber().then((blockNumber) => {
+            if(blockNumber > newBlockNumber) {
+                reject("Cannot go back");
+            } else if (blockNumber < newBlockNumber) {
+                exports.increaseBlock(newBlockNumber - blockNumber).then(()=>{
+                    resolve();
+                })
+            } else {
+                resolve();
+            }
+        })
+    })  
+}
+
+exports.addGas = (call, from, amount=1010) => {
+    return new Promise((resolve, reject) => {
+        call.estimateGas().then((gas) => {
+            call.send({
+                gas: gas+amount,
+                from: from
+            }).on('error', reject).then(resolve);
+        })
+    })
+}
+