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# frozen_string_literal: true
require_relative "helper"
require "rubygems/doctor"

class TestGemDoctor < Gem::TestCase
  def gem(name)
    spec = quick_gem name do |gem|
      gem.files = %W[lib/#{name}.rb Rakefile]
    end

    write_file File.join(*%W[gems #{spec.full_name} lib #{name}.rb])
    write_file File.join(*%W[gems #{spec.full_name} Rakefile])

    spec
  end

  def test_doctor
    a = gem "a"
    b = gem "b"
    c = gem "c"

    Gem.use_paths @userhome, @gemhome

    FileUtils.rm b.spec_file

    File.open c.spec_file, "w" do |io|
      io.write "this will raise an exception when evaluated."
    end

    assert_path_exist File.join(a.gem_dir, "Rakefile")
    assert_path_exist File.join(a.gem_dir, "lib", "a.rb")

    assert_path_exist b.gem_dir
    assert_path_not_exist b.spec_file

    assert_path_exist c.gem_dir
    assert_path_exist c.spec_file

    doctor = Gem::Doctor.new @gemhome

    capture_output do
      use_ui @ui do
        doctor.doctor
      end
    end

    assert_path_exist File.join(a.gem_dir, "Rakefile")
    assert_path_exist File.join(a.gem_dir, "lib", "a.rb")

    assert_path_not_exist b.gem_dir
    assert_path_not_exist b.spec_file

    assert_path_not_exist c.gem_dir
    assert_path_not_exist c.spec_file

    expected = <<-OUTPUT
Checking #{@gemhome}
Removed file specifications/c-2.gemspec
Removed directory gems/b-2
Removed directory gems/c-2

    OUTPUT

    assert_equal expected, @ui.output

    assert_equal Gem.dir,  @userhome
    assert_equal Gem.path, [@gemhome, @userhome]
  end

  def test_doctor_dry_run
    a = gem "a"
    b = gem "b"
    c = gem "c"

    Gem.use_paths @userhome, @gemhome

    FileUtils.rm b.spec_file

    File.open c.spec_file, "w" do |io|
      io.write "this will raise an exception when evaluated."
    end

    assert_path_exist File.join(a.gem_dir, "Rakefile")
    assert_path_exist File.join(a.gem_dir, "lib", "a.rb")

    assert_path_exist b.gem_dir
    assert_path_not_exist b.spec_file

    assert_path_exist c.gem_dir
    assert_path_exist c.spec_file

    doctor = Gem::Doctor.new @gemhome, true

    capture_output do
      use_ui @ui do
        doctor.doctor
      end
    end

    assert_path_exist File.join(a.gem_dir, "Rakefile")
    assert_path_exist File.join(a.gem_dir, "lib", "a.rb")

    assert_path_exist b.gem_dir
    assert_path_not_exist b.spec_file

    assert_path_exist c.gem_dir
    assert_path_exist c.spec_file

    expected = <<-OUTPUT
Checking #{@gemhome}
Extra file specifications/c-2.gemspec
Extra directory gems/b-2
Extra directory gems/c-2

    OUTPUT

    assert_equal expected, @ui.output

    assert_equal Gem.dir,  @userhome
    assert_equal Gem.path, [@gemhome, @userhome]
  end

  def test_doctor_non_gem_home
    other_dir = File.join @tempdir, "other", "dir"

    FileUtils.mkdir_p other_dir

    doctor = Gem::Doctor.new @tempdir

    capture_output do
      use_ui @ui do
        doctor.doctor
      end
    end

    assert_path_exist other_dir

    expected = <<-OUTPUT
Checking #{@tempdir}
This directory does not appear to be a RubyGems repository, skipping

    OUTPUT

    assert_equal expected, @ui.output
  end

  def test_doctor_child_missing
    doctor = Gem::Doctor.new @gemhome

    doctor.doctor_child "missing", ""

    assert true # count
  end

  def test_doctor_badly_named_plugins
    gem "a"

    Gem.use_paths @gemhome.to_s

    FileUtils.mkdir_p Gem.plugindir
    bad_plugin = File.join(Gem.plugindir, "a_badly_named_file.rb")
    write_file bad_plugin

    doctor = Gem::Doctor.new @gemhome

    capture_output do
      use_ui @ui do
        doctor.doctor
      end
    end

    # assert_path_not_exist bad_plugin

    expected = <<-OUTPUT
Checking #{@gemhome}
Removed file plugins/a_badly_named_file.rb

    OUTPUT

    assert_equal expected, @ui.output
  end

  def test_gem_repository_eh
    doctor = Gem::Doctor.new @gemhome

    refute doctor.gem_repository?, "no gems installed"

    install_specs util_spec "a"

    doctor = Gem::Doctor.new @gemhome

    assert doctor.gem_repository?, "gems installed"
  end
end