require 'spec/spec_helper'

describe 'CLI' do
  before do
    `rm -rf #{folder}`
  end

  after do
    `rm -rf #{folder}`
  end

  def folder
    "/tmp/parallel_tests_tests"
  end

  def write(file, content)
    path = "#{folder}/spec/#{file}"
    `mkdir -p #{File.dirname(path)}` unless File.exist?(File.dirname(path))
    File.open(path, 'w'){|f| f.write content }
    path
  end

  def bin_folder
    "#{File.expand_path(File.dirname(__FILE__))}/../bin"
  end

  def executable
    "#{bin_folder}/parallel_test"
  end

  def run_specs(options={})
    `cd #{folder} && #{executable} --chunk-timeout 999 -t spec -n #{options[:processes]||2} #{options[:add]} 2>&1`
  end

  it "runs tests in parallel" do
    write 'xxx_spec.rb', 'describe("it"){it("should"){puts "TEST1"}}'
    write 'xxx2_spec.rb', 'describe("it"){it("should"){puts "TEST2"}}'
    result = run_specs

    # test ran and gave their puts
    result.should include('TEST1')
    result.should include('TEST2')

    # all results present
    result.scan('1 example, 0 failure').size.should == 4 # 2 results + 2 result summary
    result.scan(/Finished in \d+\.\d+ seconds/).size.should == 2
    result.scan(/Took \d+\.\d+ seconds/).size.should == 1 # parallel summary
    $?.success?.should == true
  end

  it "fails when tests fail" do
    write 'xxx_spec.rb', 'describe("it"){it("should"){puts "TEST1"}}'
    write 'xxx2_spec.rb', 'describe("it"){it("should"){1.should == 2}}'
    result = run_specs

    result.scan('1 example, 1 failure').size.should == 2
    result.scan('1 example, 0 failure').size.should == 2
    $?.success?.should == false
  end

  it "can exec given commands with ENV['TEST_ENV_NUM']" do
    result = `#{executable} -e 'ruby -e "print ENV[:TEST_ENV_NUMBER.to_s].to_i"' -n 4`
    result.gsub('"','').split('').sort.should == %w[0 2 3 4]
  end

  it "can exec given command non-parallel" do
    result = `#{executable} -e 'ruby -e "sleep(rand(10)/100.0); puts ENV[:TEST_ENV_NUMBER.to_s].inspect"' -n 4 --non-parallel`
    result.split("\n").should == %w["" "2" "3" "4"]
  end

  it "exists with success if all sub-processes returned success" do
    system("#{executable} -e 'cat /dev/null' -n 4").should == true
  end

  it "exists with failure if any sub-processes returned failure" do
    system("#{executable} -e 'test -e xxxx' -n 4").should == false
  end

  it "can run through parallel_spec / parallel_cucumber" do
    version = `#{executable} -v`
    `#{bin_folder}/parallel_spec -v`.should == version
    `#{bin_folder}/parallel_cucumber -v`.should == version
  end

  it "runs faster with more processes" do
    2.times{|i|
      write "xxx#{i}_spec.rb",  'describe("it"){it("should"){sleep 5}}; $stderr.puts ENV["TEST_ENV_NUMBER"]'
    }
    t = Time.now
    puts run_specs(:processes => 2)
    expected = 10
    (Time.now - t).should <= expected
  end

  it "can can with given files" do
    write "x1_spec.rb", "puts '111'"
    write "x2_spec.rb", "puts '222'"
    write "x3_spec.rb", "puts '333'"
    result = run_specs(:add => 'spec/x1_spec.rb spec/x3_spec.rb')
    result.should include('111')
    result.should include('333')
    result.should_not include('222')
  end

  it "can run with test-options" do
    write "x1_spec.rb", ""
    write "x2_spec.rb", ""
    result = run_specs(:add => "--test-options ' --version'", :processes => 2)
    result.should =~ /\d+\.\d+\.\d+.*\d+\.\d+\.\d+/m # prints version twice
  end
end