require "serverspec"

require "docker"

describe "Dockerfile" do

before(:all) do

image = Docker::Image.build_from_dir('.')

set :os, family: :alpine

set :backend, :docker

set :docker_image, image.id

end

it "has right version of alpine" do

expect(os_version).to include("3.9.4")

end

def os_version

command("cat /etc/alpine-release").stdout

end

it "should have python 3.7.3" do

expect(python_version).to include("Python 3.7.3")

end

def python_version

command("python --version").stdout

end

describe user('app-user') do

it { should exist }

it { should have_login_shell '/bin/sh' }

it { should have_home_directory '/app' }

it { should belong_to_group 'root' }

end

describe file('/app/index.py') do

it { should be_mode 644 }

it { should be_owned_by 'app-user' }

end

describe process('python') do

it { should be_running }

its(:user) { should match(/app-user/) }

its(:args) { should match(/\.\/index.py/) }

end

describe port(5000) do

it { should be_listening }

end

end