Commit 58eba6e6 authored by Matt Brubeck's avatar Matt Brubeck
Browse files

Bug 564815 - Tests for window.devicePixelRatio

parent 9704a033

dom/tests/mochitest/general/test_innerScreen.xul

+5 −0
Original line number Diff line number Diff line
@@ -38,6 +38,9 @@ function doTests() 
  var domWindowUtils = window.QueryInterface(Components.interfaces.nsIInterfaceRequestor)

                           .getInterface(Components.interfaces.nsIDOMWindowUtils);

  var devPxPerCSSPx = domWindowUtils.screenPixelsPerCSSPixel;



  is(window.devicePixelRatio, devPxPerCSSPx, "window.devicePixelRatio");



  var windowBO = document.documentElement.boxObject;

  isRounded(window.mozInnerScreenX*devPxPerCSSPx, windowBO.screenX,

            "window screen X");
@@ -64,6 +67,8 @@ function doTests() 
  is(frameDomWindowUtils.screenPixelsPerCSSPixel, 2*devPxPerCSSPx,

     "frame screen pixels per CSS pixel");



  is(f.contentWindow.devicePixelRatio, 2*devPxPerCSSPx, "frame devicePixelRatio");



  isRounded(f.contentWindow.mozInnerScreenX*2,

            window.mozInnerScreenX + fBounds.left,

            "zoomed frame screen X");