add deposit test

contracts/handlers/ERC20Handler.sol

@@ -3,7 +3,7 @@ pragma experimental ABIEncoderV2;
 
 import "../interfaces/IDepositExecute.sol";
 import "./HandlerHelpers.sol";
-import "../ERC20Safe.sol";
+import "../tokens/ERC20Safe.sol";
 
 /**
     @title Handles ERC20 deposits and deposit executions.

contracts/tokens/ERC20Safe.sol

@@ -97,7 +97,7 @@ contract ERC20Safe {
         @param token Token instance call targets
         @param data encoded call data
      */
-    function _safeCall(IERC20 token, bytes memory data) private {        
+    function _safeCall(IERC20 token, bytes memory data) private {
         (bool success, bytes memory returndata) = address(token).call(data);
         require(success, "ERC20: call failed");
 

test/Bridge.ts

@@ -1,11 +1,20 @@
-import { ethers } from "hardhat";
+import { ethers,  } from "hardhat";
 import { Signer } from "ethers";
-import { expect } from "chai";
+import chai from "chai";
+import { solidity } from "ethereum-waffle";
 
-import { Bridge } from "../types/Bridge"
-import { ERC20Handler } from "../types/ERC20Handler"
-import { MintableERC20 } from "../types/MintableERC20"
-import { createResourceID } from "../utils/helpers"
+import { Bridge } from "../types/Bridge";
+import { ERC20Handler } from "../types/ERC20Handler";
+import { MintableERC20 } from "../types/MintableERC20";
+import {
+  createResourceID,
+  toWei,
+  createERCDepositData,
+  generateDepositMetaData
+} from "../utils/helpers";
+
+chai.use(solidity);
+const { expect  } = chai;
 
 describe("Bridge", function () {
   const ETHEREUM_CHAIN_ID: number = 1;
@@ -17,6 +26,8 @@ describe("Bridge", function () {
   let sntEthereum: MintableERC20;
   let sntEthereumResourceId: string;
   let deployerAddress: string;
+  let depositerAddress: string;
+  let recipientAddress: string;
 
   beforeEach(async function () {
     accounts = await ethers.getSigners();
@@ -43,7 +54,29 @@ describe("Bridge", function () {
       []
     ) as ERC20Handler;
     erc20Handler = _erc20Handler;
+    await bridge.adminSetResource(
+      erc20Handler.address,
+      sntEthereumResourceId,
+      sntEthereum.address
+    );
   });
 
-  it("Should deposit erc20 in bridge", async function () {});
+  it("Should deposit erc20 into the bridge", async function () {
+    const [deployer, depositer, recipient] = accounts;
+    depositerAddress = await depositer.getAddress();
+    recipientAddress = await recipient.getAddress();
+    const sntDepositer = sntEthereum.connect(depositer);
+    await sntEthereum.mint(depositerAddress, toWei("100"));
+    await sntDepositer.approve(erc20Handler.address, toWei("1"));
+
+    const encodedMetaData = generateDepositMetaData(1, recipientAddress);
+    const bridgeDepositer = bridge.connect(depositer);
+    const deposit = bridgeDepositer.deposit(
+      AVA_CHAIN_ID,
+      sntEthereumResourceId,
+      encodedMetaData
+    );
+    await expect(deposit)
+      .to.emit(bridgeDepositer, 'Deposit');
+  });
 });

utils/helpers.ts

@@ -1,6 +1,11 @@
 import { utils } from "ethers";
-const { hexZeroPad, hexlify, keccak256, formatBytes32String } = utils;
+const {
+  hexZeroPad,
+  hexlify,
+  formatBytes32String,
+} = utils;
 
+const AbiCoder = new utils.AbiCoder;
 export const toHex = (covertThis: any, padding: number) => {
   return hexZeroPad(hexlify(covertThis), padding);
 };
@@ -9,3 +14,28 @@ export const createResourceID = (contractAddress: string, chainID: number) => {
   const str = chainID.toString() + contractAddress
   return formatBytes32String(str.slice(0, 31));
 };
+
+export const abiEncode = (valueTypes: any[], values: any[]) => {
+  return AbiCoder.encode(valueTypes, values)
+};
+
+export const generateDepositMetaData = (amount: number, recipientAddress: string) => {
+  const addressLength = 20;
+  return abiEncode(
+  ['uint256', 'uint256', 'bytes'],
+  [amount, addressLength, recipientAddress]
+  );
+}
+
+export const toWei = (x: string) => utils.parseEther(x);
+
+export const createERCDepositData = (
+  tokenAmountOrID: number,
+  lenRecipientAddress: number,
+  recipientAddress: string
+): string => {
+  return '0x' +
+    toHex(tokenAmountOrID, 32).substr(2) +      // Token amount or ID to deposit (32 bytes)
+    toHex(lenRecipientAddress, 32).substr(2) + // len(recipientAddress)          (32 bytes)
+    recipientAddress.substr(2);               // recipientAddress               (?? bytes)
+};