Migrate from truffle to test-environment (#2007)

* Sketch

* Migrate all tests to test-env

* Finish migration to test-env

* Add config

* Work on GSN tests

* Migrate to newer test-env version and loader syntax

* Add GSN setup

* Finish test-env migration

* Setup coverage using test-env

* Migrate to npm package

* Fix package.json

* Add compile step to CI

* Add comment on coverage setup

* Remove dependency on @truffle/contract

* Fix package-lock merge

* Fix linter errors

* Upgrade test-environment, depend locally on ganche-coverage

* Improve coverage script

* Improve sign.js API

* Move accounts destructuring to describe block

* Switch to prebuilt ethereumjs-vm package

* Upgrade test-enviroment version

* use workspace in circleci config

* remove unnecessary npx

test/GSN/Context.behavior.js

@@ -1,6 +1,8 @@
+const { contract } = require('@openzeppelin/test-environment');
+
 const { BN, expectEvent } = require('@openzeppelin/test-helpers');
 
-const ContextMock = artifacts.require('ContextMock');
+const ContextMock = contract.fromArtifact('ContextMock');
 
 function shouldBehaveLikeRegularContext (sender) {
   describe('msgSender', function () {

test/GSN/Context.test.js

@@ -1,11 +1,15 @@
+const { accounts, contract } = require('@openzeppelin/test-environment');
+
 require('@openzeppelin/test-helpers');
 
-const ContextMock = artifacts.require('ContextMock');
-const ContextMockCaller = artifacts.require('ContextMockCaller');
+const ContextMock = contract.fromArtifact('ContextMock');
+const ContextMockCaller = contract.fromArtifact('ContextMockCaller');
 
 const { shouldBehaveLikeRegularContext } = require('./Context.behavior');
 
-contract('Context', function ([_, sender]) {
+describe('Context', function () {
+  const [ sender ] = accounts;
+
   beforeEach(async function () {
     this.context = await ContextMock.new();
     this.caller = await ContextMockCaller.new();

test/GSN/ERC721GSNRecipientMock.test.js

@@ -1,12 +1,16 @@
+const { accounts, contract, web3 } = require('@openzeppelin/test-environment');
+
 const { constants, expectEvent } = require('@openzeppelin/test-helpers');
 const { ZERO_ADDRESS } = constants;
 const gsn = require('@openzeppelin/gsn-helpers');
 const { fixSignature } = require('../helpers/sign');
 const { utils: { toBN } } = require('web3');
 
-const ERC721GSNRecipientMock = artifacts.require('ERC721GSNRecipientMock');
+const ERC721GSNRecipientMock = contract.fromArtifact('ERC721GSNRecipientMock');
+
+describe('ERC721GSNRecipient (integration)', function () {
+  const [ signer, sender ] = accounts;
 
-contract('ERC721GSNRecipient (integration)', function ([_, signer, sender]) {
   const tokenId = '42';
 
   beforeEach(async function () {

test/GSN/GSNRecipient.test.js

@@ -1,3 +1,5 @@
+const { accounts, contract, web3 } = require('@openzeppelin/test-environment');
+
 const { balance, BN, constants, ether, expectEvent, expectRevert } = require('@openzeppelin/test-helpers');
 const { ZERO_ADDRESS } = constants;
 
@@ -5,12 +7,14 @@ const gsn = require('@openzeppelin/gsn-helpers');
 
 const { expect } = require('chai');
 
-const GSNRecipientMock = artifacts.require('GSNRecipientMock');
-const ContextMockCaller = artifacts.require('ContextMockCaller');
+const GSNRecipientMock = contract.fromArtifact('GSNRecipientMock');
+const ContextMockCaller = contract.fromArtifact('ContextMockCaller');
 
 const { shouldBehaveLikeRegularContext } = require('./Context.behavior');
 
-contract('GSNRecipient', function ([_, payee, sender, newRelayHub]) {
+describe('GSNRecipient', function () {
+  const [ payee, sender, newRelayHub ] = accounts;
+
   beforeEach(async function () {
     this.recipient = await GSNRecipientMock.new();
   });

test/GSN/GSNRecipientERC20Fee.test.js

@@ -1,13 +1,17 @@
+const { accounts, contract, web3 } = require('@openzeppelin/test-environment');
+
 const { ether, expectEvent } = require('@openzeppelin/test-helpers');
 const gsn = require('@openzeppelin/gsn-helpers');
 
 const { expect } = require('chai');
 
-const GSNRecipientERC20FeeMock = artifacts.require('GSNRecipientERC20FeeMock');
-const ERC20Detailed = artifacts.require('ERC20Detailed');
-const IRelayHub = artifacts.require('IRelayHub');
+const GSNRecipientERC20FeeMock = contract.fromArtifact('GSNRecipientERC20FeeMock');
+const ERC20Detailed = contract.fromArtifact('ERC20Detailed');
+const IRelayHub = contract.fromArtifact('IRelayHub');
+
+describe('GSNRecipientERC20Fee', function () {
+  const [ sender ] = accounts;
 
-contract('GSNRecipientERC20Fee', function ([_, sender, other]) {
   const name = 'FeeToken';
   const symbol = 'FTKN';
 

test/GSN/GSNRecipientSignature.test.js

@@ -1,12 +1,16 @@
+const { accounts, contract, web3 } = require('@openzeppelin/test-environment');
+
 const { expectEvent, expectRevert, constants } = require('@openzeppelin/test-helpers');
 const gsn = require('@openzeppelin/gsn-helpers');
 const { fixSignature } = require('../helpers/sign');
 const { utils: { toBN } } = require('web3');
 const { ZERO_ADDRESS } = constants;
 
-const GSNRecipientSignatureMock = artifacts.require('GSNRecipientSignatureMock');
+const GSNRecipientSignatureMock = contract.fromArtifact('GSNRecipientSignatureMock');
+
+describe('GSNRecipientSignature', function () {
+  const [ signer, other ] = accounts;
 
-contract('GSNRecipientSignature', function ([_, signer, other]) {
   beforeEach(async function () {
     this.recipient = await GSNRecipientSignatureMock.new(signer);
   });