flow like the river

VISUALIZACION/node_modules/buffer-xor/test/index.js

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+/* global describe, it */
+
+var assert = require('assert')
+var xor = require('../')
+var xorInplace = require('../inplace')
+var fixtures = require('./fixtures')
+
+describe('xor', function () {
+  fixtures.forEach(function (f) {
+    it('returns ' + f.expected + ' for ' + f.a + '/' + f.b, function () {
+      var a = new Buffer(f.a, 'hex')
+      var b = new Buffer(f.b, 'hex')
+      var actual = xor(a, b)
+
+      assert.equal(actual.toString('hex'), f.expected)
+
+      // a/b unchanged
+      assert.equal(a.toString('hex'), f.a)
+      assert.equal(b.toString('hex'), f.b)
+    })
+  })
+})
+
+describe('xor/inplace', function () {
+  fixtures.forEach(function (f) {
+    it('returns ' + f.expected + ' for ' + f.a + '/' + f.b, function () {
+      var a = new Buffer(f.a, 'hex')
+      var b = new Buffer(f.b, 'hex')
+      var actual = xorInplace(a, b)
+
+      assert.equal(actual.toString('hex'), f.expected)
+
+      // a mutated, b unchanged
+      assert.equal(a.toString('hex'), f.mutated || f.expected)
+      assert.equal(b.toString('hex'), f.b)
+    })
+  })
+})