require_relative 'test_helper'

class UtilsTest < Minitest::Test
  describe IOStreams::Utils do
    describe '.temp_file_name' do
      it 'returns value from block' do
        result = IOStreams::Utils.temp_file_name('base', '.ext') { |_name| 257 }
        assert_equal 257, result
      end

      it 'supplies new temp file_name' do
        file_name  = nil
        file_name2 = nil
        IOStreams::Utils.temp_file_name('base', '.ext') { |name| file_name = name }
        IOStreams::Utils.temp_file_name('base', '.ext') { |name| file_name2 = name }
        refute_equal file_name, file_name2
      end
    end
  end
end