refactor: the whole thing (#102)

test/hmac/hmac.spec.js

@@ -0,0 +1,29 @@
+/* eslint max-nested-callbacks: ["error", 8] */
+/* eslint-env mocha */
+'use strict'
+
+const Buffer = require('safe-buffer').Buffer
+const chai = require('chai')
+const dirtyChai = require('dirty-chai')
+const expect = chai.expect
+chai.use(dirtyChai)
+
+const crypto = require('../../src')
+
+const hashes = ['SHA1', 'SHA256', 'SHA512']
+
+describe('HMAC', () => {
+  hashes.forEach((hash) => {
+    it(`${hash} - sign and verify`, (done) => {
+      crypto.hmac.create(hash, Buffer.from('secret'), (err, hmac) => {
+        expect(err).to.not.exist()
+
+        hmac.digest(Buffer.from('hello world'), (err, sig) => {
+          expect(err).to.not.exist()
+          expect(sig).to.have.length(hmac.length)
+          done()
+        })
+      })
+    })
+  })
+})