Add karma test runner

.github/workflows/build.yml

@@ -28,3 +28,16 @@ jobs:
         uses: coverallsapp/github-action@master
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
+
+  test-browser:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12.x
+
+      - uses: actions/checkout@v1
+
+      - run: npm install
+      - run: npm run test:browser
+

karma.conf.js

@@ -0,0 +1,27 @@
+module.exports = function(config) {
+  config.set({
+    frameworks: ['mocha', 'karma-typescript'],
+    files: ['src/**/*.ts', 'test/**/*.ts'],
+    preprocessors: {
+      '**/*.ts': ['karma-typescript'],
+    },
+    plugins: ['karma-mocha', 'karma-typescript', 'karma-chrome-launcher', 'karma-firefox-launcher'],
+    karmaTypescriptConfig: {
+      bundlerOptions: {
+        entrypoints: /\.spec\.ts$/,
+        acornOptions: {
+          ecmaVersion: 8,
+        },
+        transforms: [require('karma-typescript-es6-transform')()],
+      },
+    },
+    colors: true,
+    reporters: ['progress', 'karma-typescript'],
+    browsers: ['FirefoxHeadless', 'ChromeHeadless'],
+    singleRun: true,
+    concurrency: Infinity,
+    // Extend timeouts for long tests
+    browserDisconnectTimeout: 1000000,
+    browserNoActivityTimeout: 1000000,
+  })
+}

package.json

@@ -16,7 +16,8 @@
     "format:fix": "ethereumjs-config-format-fix",
     "lint": "ethereumjs-config-lint",
     "lint:fix": "ethereumjs-config-lint-fix",
-    "test": "npm run build && nyc --reporter=lcov mocha ./test/**/*.ts && npm run test:browser",
+    "test": "npm run build && nyc --reporter=lcov mocha ./test/**/*.ts",
+    "test:browser": "karma start karma.conf.js",
     "tsc": "ethereumjs-config-tsc",
     "tslint": "ethereumjs-config-tslint",
     "tslint:fix": "ethereumjs-config-tslint-fix"
@@ -63,6 +64,12 @@
     "@types/node": "^12.0.10",
     "ethers": "^4.0.33",
     "husky": "^2.1.0",
+    "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",
+    "karma-typescript-es6-transform": "^5.0.2",
     "lodash.zip": "^4.2.0",
     "mocha": "^7.1.2",
     "nyc": "^15.0.1",

test/index.spec.ts

@@ -24,6 +24,10 @@ const fixturePublicKeyBuffer = Buffer.from(fixturePublicKey, 'hex')
 const fixtureWallet = Wallet.fromPrivateKey(fixturePrivateKeyBuffer)
 const fixtureEthersWallet = new ethersWallet(fixtureWallet.getPrivateKeyString())
 
+const isRunningInKarma = () => {
+  return typeof (global as any).window !== 'undefined' && (global as any).window.__karma__
+}
+
 describe('.getPrivateKey()', function() {
   it('should work', function() {
     assert.strictEqual(fixtureWallet.getPrivateKey().toString('hex'), fixturePrivateKey)
@@ -212,7 +216,7 @@ describe('.toV3()', function() {
   const makePermutations = (...objs: Array<object>): Array<object> => {
     const permus = []
     const keys = Array.from(
-      objs.reduce((acc: Set<string>, curr: object) => {
+      objs.reduce((acc: any, curr: object) => {
         Object.keys(curr).forEach(key => {
           acc.add(key)
         })
@@ -246,7 +250,13 @@ describe('.toV3()', function() {
     return obj
   }
 
-  const permutations = makePermutations(strKdfOptions, buffKdfOptions)
+  let permutations = makePermutations(strKdfOptions, buffKdfOptions)
+
+  if (isRunningInKarma()) {
+    // These tests take a long time in the browser due to
+    // the amount of permutations so we will shorten them.
+    permutations = permutations.slice(1)
+  }
 
   it('should work with PBKDF2', async function() {
     this.timeout(0) // never
@@ -669,19 +679,22 @@ describe('.fromV3()', function() {
   it('should fail with invalid password', function() {
     const w =
       '{"crypto":{"cipher":"aes-128-ctr","cipherparams":{"iv":"6087dab2f9fdbbfaddc31a909735c1e6"},"ciphertext":"5318b4d5bcd28de64ee5559e671353e16f075ecae9f99c7a79a38af5f869aa46","kdf":"pbkdf2","kdfparams":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"ae3cd4e7013836a3df6bd7241b12db061dbe2c6785853cce422d148a624ce0bd"},"mac":"517ead924a9d0dc3124507e3393d175ce3ff7c1e96529c6c555ce9e51205e9b2"},"id":"3198bc9c-6672-5ab3-d995-4942343ae5b6","version":3}'
+    this.timeout(0) // never
     assert.throws(function() {
       Wallet.fromV3(w, 'wrongtestpassword')
     }, /^Error: Key derivation failed - possibly wrong passphrase$/)
   })
   it('should work with (broken) mixed-case input files', function() {
     const w =
       '{"Crypto":{"cipher":"aes-128-ctr","cipherparams":{"iv":"6087dab2f9fdbbfaddc31a909735c1e6"},"ciphertext":"5318b4d5bcd28de64ee5559e671353e16f075ecae9f99c7a79a38af5f869aa46","kdf":"pbkdf2","kdfparams":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"ae3cd4e7013836a3df6bd7241b12db061dbe2c6785853cce422d148a624ce0bd"},"mac":"517ead924a9d0dc3124507e3393d175ce3ff7c1e96529c6c555ce9e51205e9b2"},"id":"3198bc9c-6672-5ab3-d995-4942343ae5b6","version":3}'
+    this.timeout(0) // never
     const wallet = Wallet.fromV3(w, 'testpassword', true)
     assert.strictEqual(wallet.getAddressString(), '0x008aeeda4d805471df9b2a5b0f38a0c3bcba786b')
   })
   it("shouldn't work with (broken) mixed-case input files in strict mode", function() {
     const w =
       '{"Crypto":{"cipher":"aes-128-ctr","cipherparams":{"iv":"6087dab2f9fdbbfaddc31a909735c1e6"},"ciphertext":"5318b4d5bcd28de64ee5559e671353e16f075ecae9f99c7a79a38af5f869aa46","kdf":"pbkdf2","kdfparams":{"c":262144,"dklen":32,"prf":"hmac-sha256","salt":"ae3cd4e7013836a3df6bd7241b12db061dbe2c6785853cce422d148a624ce0bd"},"mac":"517ead924a9d0dc3124507e3393d175ce3ff7c1e96529c6c555ce9e51205e9b2"},"id":"3198bc9c-6672-5ab3-d995-4942343ae5b6","version":3}'
+    this.timeout(0) // never
     assert.throws(function() {
       Wallet.fromV3(w, 'testpassword')
     }) // FIXME: check for assert message(s)
@@ -760,6 +773,7 @@ describe('.fromKryptoKit()', function() {
       'qhah1VeT0RgTvff1UKrUrxtFViiQuki16dd353d59888c25',
       'testtest',
     )
+    this.timeout(0) // never
     assert.strictEqual(wallet.getAddressString(), '0x3c753e27834db67329d1ec1fab67970ec1e27112')
   })
 })