Rails 5 Test Prescriptions

Writing a Sample Test

This first test is just here to introduce Jasmine and Karma, not to be any kind of useful test. This is Jasmine, using ES6 syntax, mostly the arrows:

js_jasmine/01/spec/javascripts/basic_spec.js

describe("JavaScript testing", () => {
  it("works", () => {
    expect(1 + 1).toEqual(2)
  })
})

Jasmine’s syntax is heavily inspired by RSpec, with JavaScript function objects taking the place of Ruby blocks. Like RSpec test suites, Jasmine test suites start with describe. In Jasmine, describe is a method that takes two arguments: a string and a function. The function defines the behavior of an entire test suite.

Inside the describe function argument, individual specs are defined by calls to the function it, which also takes ...