public void UpdatePreviewJsHelper()
        {
            PhotoUtils myutils = new PhotoUtils();

            String localjsfile = mytestutils.GetLocalRootPathToFile("\\js\\tiffjcroppreset.js");
            String ratio = Settings.AppSettings.passwidth + "/" + Settings.AppSettings.passheight;
            String previewwidth = Settings.AppSettings.previewwidth;
            String previewheight = Settings.AppSettings.previewheight;

            String result1 = myutils.UpdatePreviewJs(220, 280, localjsfile);
            String result2 = myutils.UpdatePreviewJs(300, 400, localjsfile);

            Boolean isRatioOK1 = result1.Contains("aspectRatio: 220/280");
            Boolean isRatioOK2 = result2.Contains("aspectRatio: 220/280");
            Boolean isrxOK1 = result1.Contains("var rx = " + previewwidth + " / c.w;");
            Boolean isrxOK2 = result2.Contains("var rx = " + previewwidth + " / c.w;");
            Boolean isryOK1 = result1.Contains("var ry = " + previewheight + " / c.h;");
            Boolean isryOK2 = result2.Contains("var ry = " + previewheight + " / c.h;");
            Boolean isWidthOK1 = result1.Contains("width: Math.round(rx*220)");
            Boolean isWidthOK2 = result2.Contains("width: Math.round(rx*300)");
            Boolean isHeightOK1 = result1.Contains("height: Math.round(ry*280)");
            Boolean isHeightOK2 = result2.Contains("height: Math.round(ry*400)");
            Boolean istruesizeOK1 = result1.Contains("trueSize: [220, 280]");
            Boolean istruesizeOK2 = result2.Contains("trueSize: [300, 400]");

            Assert.IsTrue(isRatioOK1);
            Assert.IsTrue(isRatioOK2);
            Assert.IsTrue(isrxOK1);
            Assert.IsTrue(isrxOK2);
            Assert.IsTrue(isryOK1);
            Assert.IsTrue(isryOK2);
            Assert.IsTrue(isWidthOK1);
            Assert.IsTrue(isWidthOK2);
            Assert.IsTrue(isHeightOK1);
            Assert.IsTrue(isHeightOK2);
            Assert.IsTrue(istruesizeOK1);
            Assert.IsTrue(istruesizeOK2);
        }