# frozen_string_literal: true

require_relative "helper"
require "rubygems/ext"

class TestGemExtCmakeBuilder < Gem::TestCase
  def setup
    super

    # Details: https://github.com/rubygems/rubygems/issues/1270#issuecomment-177368340
    pend "CmakeBuilder doesn't work on Windows." if Gem.win_platform?

    require "open3"

    begin
      _, status = Open3.capture2e("cmake")
      pend "cmake not present" unless status.success?
    rescue Errno::ENOENT
      pend "cmake not present"
    end

    @ext = File.join @tempdir, "ext"
    @dest_path = File.join @tempdir, "prefix"

    FileUtils.mkdir_p @ext
    FileUtils.mkdir_p @dest_path
  end

  def test_self_build
    File.open File.join(@ext, "CMakeLists.txt"), "w" do |cmakelists|
      cmakelists.write <<-EO_CMAKE
cmake_minimum_required(VERSION 3.5)
project(self_build NONE)
install (FILES test.txt DESTINATION bin)
      EO_CMAKE
    end

    FileUtils.touch File.join(@ext, "test.txt")

    output = []

    Gem::Ext::CmakeBuilder.build nil, @dest_path, output, [], nil, @ext

    output = output.join "\n"

    assert_match(/^cmake \. -DCMAKE_INSTALL_PREFIX\\=#{Regexp.escape @dest_path}/, output)
    assert_match(/#{Regexp.escape @ext}/, output)
    assert_contains_make_command "", output
    assert_contains_make_command "install", output
    assert_match(/test\.txt/, output)
  end

  def test_self_build_fail
    output = []

    error = assert_raise Gem::InstallError do
      Gem::Ext::CmakeBuilder.build nil, @dest_path, output, [], nil, @ext
    end

    output = output.join "\n"

    shell_error_msg = /(CMake Error: .*)/

    assert_match "cmake failed", error.message

    assert_match(/^cmake . -DCMAKE_INSTALL_PREFIX\\=#{Regexp.escape @dest_path}/, output)
    assert_match(/#{shell_error_msg}/, output)
  end

  def test_self_build_has_makefile
    File.open File.join(@ext, "Makefile"), "w" do |makefile|
      makefile.puts "all:\n\t@echo ok\ninstall:\n\t@echo ok"
    end

    output = []

    Gem::Ext::CmakeBuilder.build nil, @dest_path, output, [], nil, @ext

    output = output.join "\n"

    assert_contains_make_command "", output
    assert_contains_make_command "install", output
  end
end
