make use of truffle for tests and add solidity-coverage

t

.gitignore

@@ -3,3 +3,5 @@ node_modules
 build
 .env
 .openzeppelin/.session
+coverage.json
+coverage

.solcover.js

@@ -0,0 +1,21 @@
+module.exports = {
+  norpc: true,
+  compileCommand: '../node_modules/.bin/truffle compile',
+  testCommand: 'node --max-old-space-size=4096 ../node_modules/.bin/truffle test --network coverage',
+  copyPackages: ['openzeppelin-solidity'],
+  providerOptions: {
+    accounts: [
+      { secretKey: '0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501200', balance: '0xD3C21BCECCEDA1000000' },
+      { secretKey: '0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501201', balance: '0xD3C21BCECCEDA1000000' },
+      { secretKey: '0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501202', balance: '0xD3C21BCECCEDA1000000' },
+      { secretKey: '0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501203', balance: '0xD3C21BCECCEDA1000000' },
+      { secretKey: '0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501204', balance: '0xD3C21BCECCEDA1000000' },
+      { secretKey: '0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501205', balance: '0xD3C21BCECCEDA1000000' },
+      { secretKey: '0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501206', balance: '0xD3C21BCECCEDA1000000' },
+      { secretKey: '0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501207', balance: '0xD3C21BCECCEDA1000000' },
+      { secretKey: '0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501208', balance: '0xD3C21BCECCEDA1000000' },
+      { secretKey: '0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501209', balance: '0xD3C21BCECCEDA1000000' },
+      { secretKey: '0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501210', balance: '0xD3C21BCECCEDA1000000' },
+    ],
+  }
+};

package.json

@@ -4,7 +4,8 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "test": "npx oz compile && mocha --timeout 300000 --exit --recursive test"
+    "test": "bash scripts/test.sh",
+    "coverage": "SOLIDITY_COVERAGE=true bash scripts/test.sh"
   },
   "repository": {
     "type": "git",
@@ -28,6 +29,9 @@
     "@openzeppelin/test-environment": "^0.1.3",
     "@openzeppelin/test-helpers": "^0.5.5",
     "chai": "^4.2.0",
-    "mocha": "^7.1.1"
+    "ganache-cli": "^6.9.1",
+    "mocha": "^7.1.1",
+    "solidity-coverage": "^0.7.4",
+    "truffle": "^5.1.23"
   }
 }

scripts/test.sh

@@ -0,0 +1,66 @@
+#!/usr/bin/env bash
+
+# Exit script as soon as a command fails.
+set -o errexit
+
+# Executes cleanup function at script exit.
+trap cleanup EXIT
+
+cleanup() {
+  # Kill the ganache-cli instance that we started (if we started one and if it's still running).
+  if [ -n "$ganache_pid" ] && ps -p $ganache_pid > /dev/null; then
+    kill -9 $ganache_pid
+  fi
+}
+
+if [ "$SOLIDITY_COVERAGE" = true ]; then
+  ganache_port=8555
+else
+  ganache_port=8544
+fi
+
+ganache_running() {
+  nc -z localhost "$ganache_port"
+}
+
+start_ganache() {
+  # We define 10 accounts with balance 1M ether
+  local accounts=(
+    --account="0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501200,1000000000000000000000000"
+    --account="0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501201,1000000000000000000000000"
+    --account="0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501202,1000000000000000000000000"
+    --account="0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501203,1000000000000000000000000"
+    --account="0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501204,1000000000000000000000000"
+    --account="0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501205,1000000000000000000000000"
+    --account="0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501206,1000000000000000000000000"
+    --account="0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501207,1000000000000000000000000"
+    --account="0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501208,1000000000000000000000000"
+    --account="0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501209,1000000000000000000000000"
+    --account="0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501210,1000000000000000000000000"
+  )
+
+  if [ "$SOLIDITY_COVERAGE" = true ]; then
+    node_modules/.bin/testrpc-sc --gasLimit 0xfffffffffff --allowUnlimitedContractSize --port "$ganache_port" > /dev/null &
+  else
+    node_modules/.bin/ganache-cli --gasLimit 0xfffffffffff --port "$ganache_port" "${accounts[@]}" > /dev/null &
+  fi
+
+  ganache_pid=$!
+}
+
+if ganache_running; then
+  echo "Using existing ganache-cli instance"
+else
+  echo "Starting ganache-cli instance"
+  start_ganache
+fi
+
+if [ "$SOLIDITY_COVERAGE" = true ]; then
+  node_modules/.bin/truffle run coverage --network coverage
+
+  if [ "$CONTINUOUS_INTEGRATION" = true ]; then
+    cat coverage/lcov.info | COVERALLS_REPO_TOKEN=$COVERALLS_REPO_TOKEN node_modules/.bin/coveralls
+  fi
+else
+  node_modules/.bin/truffle test "$@" --network test
+fi

test/PoaMania.test.js

@@ -1,14 +1,13 @@
-const { accounts, contract } = require('@openzeppelin/test-environment');
 const { ether, BN, expectRevert, expectEvent, time, constants, send, balance } = require('@openzeppelin/test-helpers');
 const { expect } = require('chai');
 
-const PoaMania = contract.fromArtifact('PoaMania');
-const RandomMock = contract.fromArtifact('RandomMock');
-const DrawManager = contract.fromArtifact('DrawManager');
-const Random = contract.fromArtifact('Random');
-const SortitionSumTreeFactory = contract.fromArtifact('SortitionSumTreeFactory');
+const PoaMania = artifacts.require('PoaMania');
+const RandomMock = artifacts.require('RandomMock');
+const DrawManager = artifacts.require('DrawManager');
+const Random = artifacts.require('Random');
+const SortitionSumTreeFactory = artifacts.require('SortitionSumTreeFactory');
 
-describe('PoaMania', () => {
+contract('PoaMania', accounts => {
   const [owner, firstParticipant, secondParticipant, thirdParticipant, fourthParticipant, fifthParticipant] = accounts;
   const roundDuration = new BN(600);                       // in seconds
   const blockTime = new BN(5);                             // in seconds

truffle.js

@@ -0,0 +1,32 @@
+module.exports = {
+  networks: {
+    test: {
+      host: "localhost",
+      port: 8544,
+      gas: 8000000,
+      network_id: "*",
+    },
+    coverage: {
+      host: "localhost",
+      port: 8555,
+      gas: 0xfffffffffff,
+      gasPrice: 0x01,
+      network_id: "*",
+    },
+  },
+  plugins: ["solidity-coverage"],
+  mocha: {
+    enableTimeouts: false,
+  },
+  compilers: {
+    solc: {
+      version: "0.5.16",
+      settings: {
+       optimizer: {
+         enabled: false,
+         runs: 200,
+       },
+      },
+    },
+  },
+};