simple chefspec example

create_spec.rb

require "spec_helper"

context "test_example" do
  let(:chef_conf) do
    ChefSpec::SoloRunner.new cookbook_path: %w(./test/cookbooks ../), # import test and example cookbook
                             step_into:     %w(example_topic) # dive inside example_topic
  end

  let(:shellout) { double("shellout") } # setup shellout double

  before do
    allow(Mixlib::ShellOut).to receive(:new).and_return(shellout)
    allow(shellout).to receive_messages(
      :run_command => nil,
      :error! => nil,
      :live_stream => nil,
      :live_stream= => nil
    )
  end

  describe "topic create" do
    let(:chef_run) { chef_conf.converge("test_example::create") }

    it "converges successfully" do
      allow(shellout).to receive(:stdout).and_return("", "Created topic")

      expect { chef_run }.to_not raise_error
      expect(chef_run).to create_example_topic("test") # custom matcher in action
    end
  end