BloomTests.Publish.ExportEpubTests.ImageStyles_ConvertedToPercent C# (CSharp) Method

        public void ImageStyles_ConvertedToPercent(string sizeClass, double pageWidthMm)
        {
            var book = SetupBookLong("This is some text", "en",
                extraPageClass: " " + sizeClass,
                extraImages: @"<div><img src='image1.png' width='334' height='220' style='width:334px; height:220px; margin-left: 34px; margin-top: 0px;'></img></div>
                            <div><img src='image2.png' width='330' height='220' style='width:330px; height: 220px; margin-left: 33px; margin-top: 0px;'></img></div>");
            MakeImageFiles(book, "image1", "image2");
            MakeEpub("output", "ImageStyles_ConvertedToPercent" + sizeClass, book);
            CheckBasicsInManifest();
            CheckBasicsInPage();

            // A5Portrait page is 297/2 mm wide
            // Percent size however is relative to containing block, typically the marginBox,
            // which is inset 40mm from page
            // a px in a printed book is exactly 1/96 in.
            // 25.4mm.in
            var marginboxInches = (pageWidthMm-40)/25.4;
            var picWidthInches = 334/96.0;
            var widthPercent = Math.Round(picWidthInches/marginboxInches*1000)/10;
            var picIndentInches = 34/96.0;
            var picIndentPercent = Math.Round(picIndentInches / marginboxInches * 1000) / 10;
            AssertThatXmlIn.String(_page1Data).HasAtLeastOneMatchForXpath("//xhtml:img[@style='width:" + widthPercent.ToString("F1")
                + "%; height:auto; margin-left: " + picIndentPercent.ToString("F1") + "%; margin-top: 0px;']", _ns);

            picWidthInches = 330 / 96.0;
            widthPercent = Math.Round(picWidthInches / marginboxInches * 1000) / 10;
            picIndentInches = 33 / 96.0;
            picIndentPercent = Math.Round(picIndentInches / marginboxInches * 1000) / 10;
            AssertThatXmlIn.String(_page1Data).HasAtLeastOneMatchForXpath("//xhtml:img[@style='width:" + widthPercent.ToString("F1")
                + "%; height:auto; margin-left: " + picIndentPercent.ToString("F1") + "%; margin-top: 0px;']", _ns);
        }