WIP: Add challenge exit tests

tests/2_challengeExit.js

@@ -0,0 +1,144 @@
+const debug = require('debug');
+const ethers = require('ethers');
+const mintAndDeposit = require('./actions/mintAndDeposit');
+const { transfer } = require('./actions/transfer');
+const exitUnspent = require('./actions/exitUnspent');
+const minePeriod = require('./actions/minePeriod');
+const { helpers, Tx, Util, Input, Output, Outpoint } = require('leap-core');
+const { bufferToHex } = require('ethereumjs-util');
+
+require('chai').should();
+
+const log = debug('challengeExit');
+
+module.exports = async function(env, addr, color) {
+    const { contracts, nodes, accounts, wallet, plasmaWallet } = env;
+    const node = nodes[0];
+    const minter = accounts[0].addr;
+    const alice = accounts[2].addr;
+    const alicePriv = accounts[2].privKey;
+    const bob = accounts[6].addr;
+    const bobPriv = accounts[6].privKey;
+    const charlie = accounts[4].addr;
+    const charliePriv = accounts[6].privKey;
+    const amount = 10000000;
+
+    await minePeriod(env);
+
+    const unspents = await node.getUnspent(bob, color);
+    const latestBlockNumber = (await node.getBlock('latest')).number;
+    log("Latest Block number: ", latestBlockNumber);
+    const latestSubmittedBlock = latestBlockNumber - latestBlockNumber % 32;
+    log("Latest submitted block number: ", latestSubmittedBlock);
+    if (latestSubmittedBlock === 0) {
+        throw new Error("Can't exit, no periods were submitted yet");
+    };
+
+      const getIndex = async (unspents, lastBlock) =>{
+        for(let i=0; i<unspents.length; i++) {
+            txHash = unspents[i].outpoint.hash;
+            txData = await node.getTransaction(bufferToHex(txHash));
+            log("Unspent", i, "blocknumber:", txData.blockNumber);
+            log("Is submitted?", txData.blockNumber < lastBlock);
+            if (txData.blockNumber < lastBlock) return i;
+        }
+
+        return -1;
+    };
+
+
+    const unspentIndex = await getIndex(unspents, latestSubmittedBlock);
+
+    if (unspentIndex === -1) {
+        throw new Error("Can't exit, no unspents are in submitted periods found");
+    };
+
+    const unspent = unspents[unspentIndex];
+
+
+    console.log("╔══════════════════════════════════════════╗");
+    console.log("║   Test: Challenge exit after Transfer    ║");
+    console.log("║Steps:                                    ║");
+    console.log("║1. Deposit to Alice                       ║");
+    console.log("║2. Trasfer from Alice to Bob              ║");
+    console.log("║3. Exit Alice                    ║");
+    console.log("║4. Challenge Alice exit                   ║");
+    console.log("╚══════════════════════════════════════════╝");
+
+     await mintAndDeposit(accounts[2], amount, contracts.token, 0, contracts.exitHandler, wallet, plasmaWallet);
+
+    // Alice makes a transfer to Bob
+    const t1 = await transfer(alice, alicePriv, bob, '1000', node);   
+    await minePeriod(env);
+
+
+
+    const transfer1 = await node.getTransaction(bufferToHex(t1.hash()));
+    const proofOfTransfer1 = await helpers.getProof( 
+        plasmaWallet.provider, 
+        transfer1, 
+        {excludePrevHashFromProof: true }
+    );
+
+     const youngestInput = await helpers.getYoungestInputTx(node, Tx.fromRaw(transfer1.raw));
+    const youngestInputProof = await helpers.getProof( 
+        plasmaWallet.provider, 
+        youngestInput.tx,  
+        {excludePrevHashFromProof: true }
+    ); 
+
+    await minePeriod(env);
+
+
+
+   // 
+
+   // console.log('youngest input', youngestInput);
+   // console.log('transfer 1' , transfer1);
+   // console.log('proofOfTransfer1', proofOfTransfer1);
+
+    // Now:
+    // 1. Bob spends the utxo he got from Alice in transfer1.
+    // 2. Bob starts an exit with the utxo he just sent to alice, using contract.exitHandler.startExit
+    // 3. But we know the unspent-transaction-output (utxo) he is trying to exit is NOT unspent (he sent it to Alice)
+    // 4. We use the proof that he spent the utxo in contract.exitHandler.challengeExit
+    // 5. In the end, we make sure the Exit struct in the exitHandler contract was deleted (this means the challenge was successful)
+
+      const t2 = await transfer(bob, bobPriv, charlie, '200', node);   
+      await minePeriod(env);
+
+      const transfer2 = await node.getTransaction(bufferToHex(t2.hash()));
+       const proofOfTransfer2 = await helpers.getProof( 
+        plasmaWallet.provider, 
+        transfer2, 
+        {excludePrevHashFromProof: true }
+     );
+     await minePeriod(env);
+
+     console.log(unspent.outpoint.index)
+     console.log(youngestInput.index)
+
+    let startExitResult =
+      await contracts.exitHandler.connect(wallet.provider.getSigner(addr)).startExit(
+        [],
+        proofOfTransfer1,
+        unspent.outpoint.index,
+        youngestInput.index,
+        { value: ethers.utils.parseEther('1'), gasLimit: 2000000 }
+    );
+    console.log(await startExitResult.wait());
+
+
+       //const utxoId = exitUtxoId(event);
+       //console.log('transfer 1', transfer1);
+       //assert.equal(utxoId, spendTx.inputs[0].prevout.getUtxoId());
+
+       //assert.equal((await contracts.exitHandler.exits(utxoId))[2], bob);
+
+      // await contracts.exitHandler.challengeExit(proofOfTransfer1, proofOfTransfer1, 0, 0, alice);
+
+        // check exit was evicted from PriorityQueue
+        //assert.equal((await contracts.exitHandler.tokens(0))[1], 0);
+}
+
+