app_test.rb

require 'test_helper'

class AppTest < ActiveSupport::TestCase
  # 1
  test "app should save with unqiue name and token" do
    app1 = App.new(name: 'Hello World', token: '13456')
    app2 = App.new(name: 'Goodbye World', token: 'abcdef')

    assert app1.save
    assert app2.save
  end

  # 2
  test "should not save with no name" do
    app = App.new()
    assert_not app.save
  end

  # 3
  test "should not save if the name is not unique" do
    app1 = App.new(name: 'app', token: 'aBcDeF')
    app2 = App.new(name: 'app', token: '012345')

    assert app1.save
    assert_not app2.save
  end
end