require 'spec_helper'
require 'appraisal/appraisal'
require 'tempfile'

describe Appraisal::Appraisal do
  it "converts spaces to underscores in the gemfile path" do
    appraisal = Appraisal::Appraisal.new("one two", "Gemfile")
    expect(appraisal.gemfile_path).to match(/one_two\.gemfile$/)
  end

  it "converts  punctuation to underscores in the gemfile path" do
    appraisal = Appraisal::Appraisal.new("o&ne!", "Gemfile")
    expect(appraisal.gemfile_path).to match(/o_ne_\.gemfile$/)
  end

  it "keeps dots in the gemfile path" do
    appraisal = Appraisal::Appraisal.new("rails3.0", "Gemfile")
    expect(appraisal.gemfile_path).to match(/rails3\.0\.gemfile$/)
  end

  it "generates a gemfile with a newline at the end of file" do
    output_file = Tempfile.new("gemfile")
    appraisal = Appraisal::Appraisal.new("fake", "fake")
    allow(appraisal).to receive(:gemfile_path).and_return(output_file.path)

    appraisal.write_gemfile

    expect(output_file.read).to match(/[^\n]*\n\z/m)
  end

  context "gemfile customization" do
    it "generates a gemfile with a custom heading" do
      heading = "This file was generated with a custom heading!"
      Appraisal::Customize.new(heading: heading)
      output_file = Tempfile.new("gemfile")
      appraisal = Appraisal::Appraisal.new("custom", "Gemfile")
      allow(appraisal).to receive(:gemfile_path).and_return(output_file.path)

      appraisal.write_gemfile

      expected_output = "# #{heading}"
      expect(output_file.read).to start_with(expected_output)
    end

    it "generates a gemfile with multiple lines of custom heading" do
      heading = <<~HEADING
        frozen_string_literal: true\n
        This file was generated with a custom heading!
      HEADING
      Appraisal::Customize.new(heading: heading)
      output_file = Tempfile.new("gemfile")
      appraisal = Appraisal::Appraisal.new("custom", "Gemfile")
      allow(appraisal).to receive(:gemfile_path).and_return(output_file.path)

      appraisal.write_gemfile

      expected_output = <<~HEADING
        # frozen_string_literal: true\n
        # This file was generated with a custom heading!
      HEADING
      expect(output_file.read).to start_with(expected_output)
    end

    it "generates a gemfile with single quotes rather than doubles" do
      Appraisal::Customize.new(single_quotes: true)
      output_file = Tempfile.new("gemfile")
      appraisal = Appraisal::Appraisal.new("quotes", 'gem "foo"')
      allow(appraisal).to receive(:gemfile_path).and_return(output_file.path)

      appraisal.write_gemfile

      expect(output_file.read).to match(/gem 'foo'/)
    end

    it "does not customize anything by default" do
      Appraisal::Customize.new
      output_file = Tempfile.new("gemfile")
      appraisal = Appraisal::Appraisal.new("fake", 'gem "foo"')
      allow(appraisal).to receive(:gemfile_path).and_return(output_file.path)

      appraisal.write_gemfile

      expected_file = %(# This file was generated by Appraisal\n\ngem "foo"\n)
      expect(output_file.read).to eq(expected_file)
    end
  end

  context 'parallel installation' do
    include StreamHelpers

    before do
      @appraisal = Appraisal::Appraisal.new('fake', 'fake')
      allow(@appraisal).to receive(:gemfile_path).and_return("/home/test/test directory")
      allow(@appraisal).to receive(:project_root).
        and_return(Pathname.new("/home/test"))
      allow(Appraisal::Command).to receive(:new).and_return(double(:run => true))
    end

    it 'runs single install command on Bundler < 1.4.0' do
      stub_const('Bundler::VERSION', '1.3.0')

      warning = capture(:stderr) do
        @appraisal.install("jobs" => 42)
      end

      expect(Appraisal::Command).to have_received(:new).
        with("#{bundle_check_command} || #{bundle_single_install_command}")
      expect(warning).to include 'Please upgrade Bundler'
    end

    it 'runs parallel install command on Bundler >= 1.4.0' do
      stub_const('Bundler::VERSION', '1.4.0')

      @appraisal.install("jobs" => 42)

      expect(Appraisal::Command).to have_received(:new).
        with("#{bundle_check_command} || #{bundle_parallel_install_command}")
    end

    it 'runs install command with retries on Bundler' do
      @appraisal.install("retry" => 3)

      expect(Appraisal::Command).to have_received(:new).
        with("#{bundle_check_command} || #{bundle_install_command_with_retries}")
    end

    it "runs install command with path on Bundler" do
      @appraisal.install("path" => "vendor/appraisal")

      expect(Appraisal::Command).to have_received(:new).
        with("#{bundle_check_command} || #{bundle_install_command_with_path}")
    end

    def bundle_check_command
      "bundle check --gemfile='/home/test/test directory'"
    end

    def bundle_single_install_command
      "bundle install --gemfile='/home/test/test directory'"
    end

    def bundle_parallel_install_command
      "bundle install --gemfile='/home/test/test directory' --jobs=42"
    end

    def bundle_install_command_with_retries
      "bundle install --gemfile='/home/test/test directory' --retry 3"
    end

    def bundle_install_command_with_path
      "bundle install --gemfile='/home/test/test directory' " \
        "--path /home/test/vendor/appraisal"
    end
  end
end