# File test/test_wpm_messg_manip.rb, line 91
    def test_set_header
      @messg_manip.set_header('Content-Type', 'text/html')
      assert_equal(1, @set_header_call)
      assert_equal(1, @header.size)
      assert_equal('text/html', @header['Content-Type'])
    end