Issue 5339 - Properly select element for pseudo-element

test/browser/elemHideEmulation.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2017 eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 257 matching lines @@
       expectVisible(test, toHide);
       window.setTimeout(() =>
       {
         expectHidden(test, toHide);
         resolve();
       }, 4000);
     });
   }).catch(unexpectedError.bind(test)).then(() => test.done());
 };
 
+exports.testPseudoClassWithPropBeforeSelector = function(test)
+{
+  let parent = createElementWithStyle("{}");
+  let child = createElementWithStyle("{background-color: #000}", parent);
+  insertStyleRule(`#${child.id}::before {content: "publicite"}`);
+
+  applyElemHideEmulation(
+    ["div:-abp-properties(content: \"publicite\")"]
+  ).then(() =>
+  {
+    expectHidden(test, child);
+    expectVisible(test, parent);
+  }).catch(unexpectedError.bind(test)).then(() => test.done());
+};
+
 exports.testPseudoClassHasSelector = function(test)
 {
   let toHide = createElementWithStyle("{}");
   applyElemHideEmulation(
     ["div:-abp-has(div)"]
   ).then(() =>
   {
     expectVisible(test, toHide);
   }).catch(unexpectedError.bind(test)).then(() => test.done());
 };
@@ skipping 156 matching lines @@
   let child = createElementWithStyle("{}", parent);
   insertStyleRule("body #" + parent.id + " > div { background-color: #000}");
   applyElemHideEmulation(
     ["div:-abp-has(:-abp-properties(background-color: rgb(0, 0, 0)))"]
   ).then(() =>
   {
     expectVisible(test, child);
     expectHidden(test, parent);
   }).catch(unexpectedError.bind(test)).then(() => test.done());
 };