dth", "100");
        expect_svg_width_and_height(100, 20);
    }, "adding specified width, in presence of specified viewBox");
    test(function() {
        svgElem.setAttribute("viewBox", "0 0 40 30");
        expect_svg_width_and_height(100, 75);
    }, "modifiying specified viewBox, in presence of specified width");

    test(function() {
        svgElem.removeAttribute("width");
        expect_svg_width_and_height(500, 375);
    }, "removing specified width, in presence of specified viewBox");

    tes