Add karma test runner

Author: ryanio

karma.conf.js

@@ -0,0 +1,23 @@
+module.exports = function(config) {
+  config.set({
+    frameworks: ['mocha', 'karma-typescript'],
+    files: ['src/**/*.ts', 'test/**/!(integration)*.ts'],
+    preprocessors: {
+      '**/*.ts': ['karma-typescript'],
+    },
+    plugins: ['karma-mocha', 'karma-typescript', 'karma-chrome-launcher', 'karma-firefox-launcher'],
+    karmaTypescriptConfig: {
+      bundlerOptions: {
+        entrypoints: /\.spec\.ts$/,
+      },
+    },
+    colors: true,
+    reporters: ['progress', 'karma-typescript'],
+    browsers: ['FirefoxHeadless', 'ChromeHeadless'],
+    singleRun: true,
+    concurrency: Infinity,
+    // Fail after timeout
+    browserDisconnectTimeout: 100000,
+    browserNoActivityTimeout: 100000,
+  })
+}

package.json

@@ -20,9 +20,9 @@
     "lint": "npm run format && npm run tslint && npm run tsc",
     "lint:fix": "npm run format:fix && npm run tslint:fix && npm run tsc",
     "unitTests": "mocha --reporter spec --require ts-node/register test/*.spec.ts",
-    "test": "npm run lint && npm run build && npm run unitTests",
-    "test:fix": "npm run lint:fix && npm run unitTests",
-    "webtest": "browserify test/max.js | testling -u"
+    "test": "npm run lint && npm run build && npm run unitTests && npm run test:browser",
+    "test:browser": "karma start karma.conf.js",
+    "test:fix": "npm run lint:fix && npm run unitTests"
   },
   "husky": {
     "hooks": {
@@ -61,7 +61,12 @@
     "@types/mocha": "^5.2.5",
     "@types/node": "^10.12.2",
     "husky": "^2.1.0",
-    "mocha": "4.1.0",
+    "karma": "^5.0.2",
+    "karma-chrome-launcher": "^2.0.0",
+    "karma-firefox-launcher": "^1.0.0",
+    "karma-mocha": "^2.0.0",
+    "karma-typescript": "^4.1.1",
+    "mocha": "7.1.2",
     "nyc": "^15.0.1",
     "prettier": "^1.15.2",
     "ts-node": "^8.9.1",

test/dataTypes.spec.ts

@@ -2,6 +2,7 @@ import { version } from 'process'
 import * as assert from 'assert'
 import * as RLP from '../src'
 const BN = require('bn.js')
+const Buffer = require('buffer').Buffer // needed for karma
 
 describe('invalid rlps', function() {
   it('should not crash on an invalid rlp', function() {
@@ -64,10 +65,12 @@ describe('RLP encoding (list):', function() {
 
 describe('RLP encoding (BigInt):', function() {
   before(function() {
-    const nodeVersionNumber = Number(version.match(/^v([0-9]+)/)![1])
-    if (nodeVersionNumber < 10) {
-      // tslint:disable-next-line no-invalid-this
-      this.skip()
+    if (version) {
+      const nodeVersionNumber = Number(version.match(/^v([0-9]+)/)![1])
+      if (nodeVersionNumber < 10) {
+        // tslint:disable-next-line no-invalid-this
+        this.skip()
+      }
     }
   })
   it('should encode a BigInt value', function() {