michael@0: function test() {
michael@0:   waitForExplicitFinish();
michael@0: 
michael@0:   Task.spawn(function () {
michael@0:     let testPage = "http://example.org/browser/browser/base/content/test/general/dummy_page.html";
michael@0:     let tab1 = gBrowser.addTab();
michael@0:     yield FullZoomHelper.selectTabAndWaitForLocationChange(tab1);
michael@0:     yield FullZoomHelper.load(tab1, testPage);
michael@0: 
michael@0:     let tab2 = gBrowser.addTab();
michael@0:     yield FullZoomHelper.load(tab2, testPage);
michael@0: 
michael@0:     FullZoom.enlarge();
michael@0:     let tab1Zoom = ZoomManager.getZoomForBrowser(tab1.linkedBrowser);
michael@0: 
michael@0:     yield FullZoomHelper.selectTabAndWaitForLocationChange(tab2);
michael@0:     let tab2Zoom = ZoomManager.getZoomForBrowser(tab2.linkedBrowser);
michael@0:     is(tab2Zoom, tab1Zoom, "Zoom should affect background tabs");
michael@0: 
michael@0:     gPrefService.setBoolPref("browser.zoom.updateBackgroundTabs", false);
michael@0:     FullZoom.reset();
michael@0:     gBrowser.selectedTab = tab1;
michael@0:     tab1Zoom = ZoomManager.getZoomForBrowser(tab1.linkedBrowser);
michael@0:     tab2Zoom = ZoomManager.getZoomForBrowser(tab2.linkedBrowser);
michael@0:     isnot(tab1Zoom, tab2Zoom, "Zoom should not affect background tabs");
michael@0: 
michael@0:     if (gPrefService.prefHasUserValue("browser.zoom.updateBackgroundTabs"))
michael@0:       gPrefService.clearUserPref("browser.zoom.updateBackgroundTabs");
michael@0:     yield FullZoomHelper.removeTabAndWaitForLocationChange(tab1);
michael@0:     yield FullZoomHelper.removeTabAndWaitForLocationChange(tab2);
michael@0:   }).then(finish, FullZoomHelper.failAndContinue(finish));
michael@0: }