Add node, chai, jest diff comparison

assertion/features/steps/jest-failure.js

@@ -0,0 +1,10 @@
+const expect = require('expect')
+const { When, Then } = require('cucumber')
+const compared = require('../support/compared')
+
+When('I use jest', function () {
+})
+
+Then('I see jest diff on failure', function () {
+  expect(compared.actual).toEqual(compared.expected)
+})