ruby--ruby/test/mkmf/test_pkg_config.rb

# frozen_string_literal: false
require_relative 'base'
require 'shellwords'

class TestMkmf
  class TestPkgConfig < TestMkmf
    PKG_CONFIG = find_executable0("pkg-config")

    def setup
      super

      if PKG_CONFIG
        @fixtures_dir = File.join(Dir.pwd, "fixtures")
        @fixtures_lib_dir = File.join(@fixtures_dir, "lib")
        @fixtures_inc_dir = File.join(@fixtures_dir, "include")

        FileUtils.mkdir(@fixtures_dir)
        File.write("fixtures/test1.pc", <<~EOF)
          libdir=#{@fixtures_lib_dir}
          includedir=#{@fixtures_inc_dir}

          Name: test1
          Description: Test for mkmf pkg-config method
          Version: 1.2.3
          Libs: -L${libdir} -ltest1-public
          Libs.private: -ltest1-private
          Cflags: -I${includedir}/cflags-I --cflags-other
        EOF

        @pkg_config_path, ENV["PKG_CONFIG_PATH"] = ENV["PKG_CONFIG_PATH"], File.join(Dir.pwd, "fixtures")
      end
    end

    def teardown
      if PKG_CONFIG
        ENV["PKG_CONFIG_PATH"] = @pkg_config_path
      end

      super
    end

    def test_pkgconfig_with_option_returns_nil_on_error
      pend("skipping because pkg-config is not installed") unless PKG_CONFIG
      assert_nil(pkg_config("package-does-not-exist", "exists"), MKMFLOG)
    end

    def test_pkgconfig_with_libs_option_returns_output
      pend("skipping because pkg-config is not installed") unless PKG_CONFIG
      expected = ["-L#{@fixtures_lib_dir}", "-ltest1-public"].sort
      actual = pkg_config("test1", "libs").shellsplit.sort
      assert_equal(expected, actual, MKMFLOG)
    end

    def test_pkgconfig_with_cflags_option_returns_output
      pend("skipping because pkg-config is not installed") unless PKG_CONFIG
      expected = ["--cflags-other", "-I#{@fixtures_inc_dir}/cflags-I"].sort
      actual = pkg_config("test1", "cflags").shellsplit.sort
      assert_equal(expected, actual, MKMFLOG)
    end

    def test_pkgconfig_with_multiple_options
      pend("skipping because pkg-config is not installed") unless PKG_CONFIG
      expected = ["-L#{@fixtures_lib_dir}", "-ltest1-public", "-ltest1-private"].sort
      actual = pkg_config("test1", "libs", "static").shellsplit.sort
      assert_equal(expected, actual, MKMFLOG)
    end
  end
end