Bug 1093507 - Fix for permaorange, with comments addressed;r=gijskruitbosch

browser/components/customizableui/test/browser_876944_customize_mode_create_destroy.js

@@ -27,7 +27,8 @@ add_task(function testWrapUnwrap() {
 // Creating and destroying a widget should correctly deal with panel placeholders
 add_task(function testPanelPlaceholders() {
   let panel = document.getElementById(CustomizableUI.AREA_PANEL);
-  is(panel.querySelectorAll(".panel-customization-placeholder").length, isInWin8() ? 1 : 2, "The number of placeholders should be correct.");
+  let expectedPlaceholders = (isInWin8() ? 1 : 2) + (isInDevEdition() ? 1 : 0);
+  is(panel.querySelectorAll(".panel-customization-placeholder").length, expectedPlaceholders, "The number of placeholders should be correct.");
   CustomizableUI.createWidget({id: kTestWidget2, label: 'Pretty label', tooltiptext: 'Pretty tooltip', defaultArea: CustomizableUI.AREA_PANEL});
   let elem = document.getElementById(kTestWidget2);
   let wrapper = document.getElementById("wrapper-" + kTestWidget2);
@@ -35,7 +36,8 @@ add_task(function testPanelPlaceholders() {
   ok(wrapper, "There should be a wrapper");
   is(wrapper.firstChild.id, kTestWidget2, "Wrapper should have test widget");
   is(wrapper.parentNode, panel, "Wrapper should be in panel");
-  is(panel.querySelectorAll(".panel-customization-placeholder").length, isInWin8() ? 3 : 1, "The number of placeholders should be correct.");
+  expectedPlaceholders = (isInWin8() ? 3 : 1) + (isInDevEdition() ? 1 : 0);
+  is(panel.querySelectorAll(".panel-customization-placeholder").length, expectedPlaceholders, "The number of placeholders should be correct.");
   CustomizableUI.destroyWidget(kTestWidget2);
   wrapper = document.getElementById("wrapper-" + kTestWidget2);
   ok(!wrapper, "There should be a wrapper");