Issue 6538, 6781 - Implement support for snippet filters

test/filterClasses.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present 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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 "use strict";
 
 const {createSandbox} = require("./_common");
 
 let Filter = null;
 let InvalidFilter = null;
 let CommentFilter = null;
 let ActiveFilter = null;
 let RegExpFilter = null;
 let BlockingFilter = null;
-let ScriptFilter = null;
+let ContentFilter = null;
 let WhitelistFilter = null;
 let ElemHideBase = null;
 let ElemHideFilter = null;
 let ElemHideException = null;
 let ElemHideEmulationFilter = null;
 let SnippetFilter = null;
 
 let t = null;
 let defaultTypes = null;
 
 exports.setUp = function(callback)
 {
   let sandboxedRequire = createSandbox();
   (
     {Filter, InvalidFilter, CommentFilter, ActiveFilter, RegExpFilter,
-     BlockingFilter, WhitelistFilter, ScriptFilter, ElemHideBase,
+     BlockingFilter, WhitelistFilter, ContentFilter, ElemHideBase,
      ElemHideFilter, ElemHideException, ElemHideEmulationFilter,
      SnippetFilter} = sandboxedRequire("../lib/filterClasses")
   );
   t = RegExpFilter.typeMap;
   defaultTypes = 0x7FFFFFFF & ~(t.CSP | t.ELEMHIDE | t.DOCUMENT | t.POPUP |
                                 t.GENERICHIDE | t.GENERICBLOCK);
 
   callback();
 };
 
@@ skipping 48 matching lines @@
     }
     else if (filter instanceof ElemHideBase)
     {
       if (filter instanceof ElemHideFilter)
         result.push("type=elemhide");
       else if (filter instanceof ElemHideException)
         result.push("type=elemhideexception");
       else if (filter instanceof ElemHideEmulationFilter)
         result.push("type=elemhideemulation");
 
-      result.push("selectorDomains=" + (filter.selectorDomains || ""));
+      result.push("selectorDomains=" +
+                  [...filter.domains || []]
+                  .filter(([domain, isIncluded]) => isIncluded)
+                  .map(([domain]) => domain.toLowerCase()));
       result.push("selector=" + filter.selector);
     }
     else if (filter instanceof SnippetFilter)
     {
       result.push("type=snippet");
-      result.push("scriptDomains=" + (filter.scriptDomains || ""));
+      result.push("scriptDomains=" +
+                  [...filter.domains || []]
+                  .filter(([domain, isIncluded]) => isIncluded)
+                  .map(([domain]) => domain.toLowerCase()));
       result.push("script=" + filter.script);
     }
   }
   return result;
 }
 
 function addDefaults(expected)
 {
   let type = null;
   let hasProperty = {};
@@ skipping 79 matching lines @@
 }
 
 exports.testFilterClassDefinitions = function(test)
 {
   test.equal(typeof Filter, "function", "typeof Filter");
   test.equal(typeof InvalidFilter, "function", "typeof InvalidFilter");
   test.equal(typeof CommentFilter, "function", "typeof CommentFilter");
   test.equal(typeof ActiveFilter, "function", "typeof ActiveFilter");
   test.equal(typeof RegExpFilter, "function", "typeof RegExpFilter");
   test.equal(typeof BlockingFilter, "function", "typeof BlockingFilter");
-  test.equal(typeof ScriptFilter, "function", "typeof ScriptFilter");
+  test.equal(typeof ContentFilter, "function", "typeof ContentFilter");
   test.equal(typeof WhitelistFilter, "function", "typeof WhitelistFilter");
   test.equal(typeof ElemHideBase, "function", "typeof ElemHideBase");
   test.equal(typeof ElemHideFilter, "function", "typeof ElemHideFilter");
   test.equal(typeof ElemHideException, "function", "typeof ElemHideException");
   test.equal(typeof ElemHideEmulationFilter, "function",
              "typeof ElemHideEmulationFilter");
   test.equal(typeof SnippetFilter, "function", "typeof SnippetFilter");
 
   test.done();
 };
@@ skipping 67 matching lines @@
   compareFilter(test, "@@/ddd|f?a[s]d/", ["type=whitelist", "text=@@/ddd|f?a[s]d/", "regexp=ddd|f?a[s]d", "contentType=" + defaultTypes]);
   compareFilter(test, "@@*asdf*d**dd*", ["type=whitelist", "text=@@*asdf*d**dd*", "regexp=asdf.*d.*dd", "contentType=" + defaultTypes]);
   compareFilter(test, "@@|*asd|f*d**dd*|", ["type=whitelist", "text=@@|*asd|f*d**dd*|", "regexp=^.*asd\\|f.*d.*dd.*$", "contentType=" + defaultTypes]);
   compareFilter(test, "@@dd[]{}$%<>&()d", ["type=whitelist", "text=@@dd[]{}$%<>&()d", "regexp=dd\\[\\]\\{\\}\\$\\%\\<\\>\\&\\(\\)d", "contentType=" + defaultTypes]);
 
   test.done();
 };
 
 exports.testFilterOptions = function(test)
 {
-  compareFilter(test, "bla$match-case,csp=first csp,script,other,third-party,domain=foo.com,sitekey=foo", ["type=filterlist", "text=bla$match-case,csp=first csp,script,other,third-party,domain=foo.com,sitekey=foo", "regexp=bla", "matchCase=true", "contentType=" + (t.SCRIPT | t.OTHER | t.CSP), "thirdParty=true", "domains=FOO.COM", "sitekeys=FOO", "csp=first csp"]);
-  compareFilter(test, "bla$~match-case,~csp=csp,~script,~other,~third-party,domain=~bar.com", ["type=filterlist", "text=bla$~match-case,~csp=csp,~script,~other,~third-party,domain=~bar.com", "regexp=bla", "contentType=" + (defaultTypes & ~(t.SCRIPT | t.OTHER)), "thirdParty=false", "domains=~BAR.COM"]);
-  compareFilter(test, "@@bla$match-case,script,other,third-party,domain=foo.com|bar.com|~bar.foo.com|~foo.bar.com,csp=c s p,sitekey=foo|bar", ["type=whitelist", "text=@@bla$match-case,script,other,third-party,domain=foo.com|bar.com|~bar.foo.com|~foo.bar.com,csp=c s p,sitekey=foo|bar", "regexp=bla", "matchCase=true", "contentType=" + (t.SCRIPT | t.OTHER | t.CSP), "thirdParty=true", "domains=BAR.COM|FOO.COM|~BAR.FOO.COM|~FOO.BAR.COM", "sitekeys=BAR|FOO"]);
-  compareFilter(test, "@@bla$match-case,script,other,third-party,domain=foo.com|bar.com|~bar.foo.com|~foo.bar.com,sitekey=foo|bar", ["type=whitelist", "text=@@bla$match-case,script,other,third-party,domain=foo.com|bar.com|~bar.foo.com|~foo.bar.com,sitekey=foo|bar", "regexp=bla", "matchCase=true", "contentType=" + (t.SCRIPT | t.OTHER), "thirdParty=true", "domains=BAR.COM|FOO.COM|~BAR.FOO.COM|~FOO.BAR.COM", "sitekeys=BAR|FOO"]);
-  compareFilter(test, "||content.server.com/files/*.php$rewrite=$1", ["type=filterlist", "text=||content.server.com/files/*.php$rewrite=$1", "regexp=^[\\w\\-]+:\\/+(?!\\/)(?:[^\\/]+\\.)?content\\.server\\.com\\/files\\/.*\\.php", "matchCase=false", "rewrite=$1"]);
+  compareFilter(test, "bla$match-case,csp=first csp,script,other,third-party,domain=FOO.cOm,sitekey=foo", ["type=filterlist", "text=bla$match-case,csp=first csp,script,other,third-party,domain=FOO.cOm,sitekey=foo", "regexp=bla", "matchCase=true", "contentType=" + (t.SCRIPT | t.OTHER | t.CSP), "thirdParty=true", "domains=foo.com", "sitekeys=FOO", "csp=first csp"]);
+  compareFilter(test, "bla$~match-case,~csp=csp,~script,~other,~third-party,domain=~bAr.coM", ["type=filterlist", "text=bla$~match-case,~csp=csp,~script,~other,~third-party,domain=~bAr.coM", "regexp=bla", "contentType=" + (defaultTypes & ~(t.SCRIPT | t.OTHER)), "thirdParty=false", "domains=~bar.com"]);
+  compareFilter(test, "@@bla$match-case,script,other,third-party,domain=foo.com|bar.com|~bAR.foO.Com|~Foo.Bar.com,csp=c s p,sitekey=foo|bar", ["type=whitelist", "text=@@bla$match-case,script,other,third-party,domain=foo.com|bar.com|~bAR.foO.Com|~Foo.Bar.com,csp=c s p,sitekey=foo|bar", "regexp=bla", "matchCase=true", "contentType=" + (t.SCRIPT | t.OTHER | t.CSP), "thirdParty=true", "domains=bar.com|foo.com|~bar.foo.com|~foo.bar.com", "sitekeys=BAR|FOO"]);
+  compareFilter(test, "@@bla$match-case,script,other,third-party,domain=foo.com|bar.com|~bar.foo.com|~foo.bar.com,sitekey=foo|bar", ["type=whitelist", "text=@@bla$match-case,script,other,third-party,domain=foo.com|bar.com|~bar.foo.com|~foo.bar.com,sitekey=foo|bar", "regexp=bla", "matchCase=true", "contentType=" + (t.SCRIPT | t.OTHER), "thirdParty=true", "domains=bar.com|foo.com|~bar.foo.com|~foo.bar.com", "sitekeys=BAR|FOO"]);
+  compareFilter(test, "||content.server.com/files/*.php$rewrite=$1", ["type=filterlist", "text=||content.server.com/files/*.php$rewrite=$1", "regexp=^[\\w\\-]+:\\/+(?!\\/)(?:[^\\/]+\\.)?content\\.server\\.com\\/files\\/.*\\.php", "matchCase=false", "rewrite=$1", "contentType=" + (defaultTypes & ~(t.SCRIPT | t.SUBDOCUMENT | t.OBJECT | t.OBJECT_SUBREQUEST))]);
 
   // background and image should be the same for backwards compatibility
   compareFilter(test, "bla$image", ["type=filterlist", "text=bla$image", "regexp=bla", "contentType=" + (t.IMAGE)]);
   compareFilter(test, "bla$background", ["type=filterlist", "text=bla$background", "regexp=bla", "contentType=" + (t.IMAGE)]);
   compareFilter(test, "bla$~image", ["type=filterlist", "text=bla$~image", "regexp=bla", "contentType=" + (defaultTypes & ~t.IMAGE)]);
   compareFilter(test, "bla$~background", ["type=filterlist", "text=bla$~background", "regexp=bla", "contentType=" + (defaultTypes & ~t.IMAGE)]);
 
   compareFilter(test, "@@bla$~script,~other", ["type=whitelist", "text=@@bla$~script,~other", "regexp=bla", "contentType=" + (defaultTypes & ~(t.SCRIPT | t.OTHER))]);
   compareFilter(test, "@@http://bla$~script,~other", ["type=whitelist", "text=@@http://bla$~script,~other", "regexp=http\\:\\/\\/bla", "contentType=" + (defaultTypes & ~(t.SCRIPT | t.OTHER))]);
   compareFilter(test, "@@|ftp://bla$~script,~other", ["type=whitelist", "text=@@|ftp://bla$~script,~other", "regexp=^ftp\\:\\/\\/bla", "contentType=" + (defaultTypes & ~(t.SCRIPT | t.OTHER))]);
@@ skipping 18 matching lines @@
   compareFilter(test, "bla$csp=foo,csp=upgrade-insecure-requests", ["type=invalid", "text=bla$csp=foo,csp=upgrade-insecure-requests", "reason=filter_invalid_csp"]);
   compareFilter(test, "bla$csp=foo,csp=ReFeRReR", ["type=invalid", "text=bla$csp=foo,csp=ReFeRReR", "reason=filter_invalid_csp"]);
 
   test.done();
 };
 
 exports.testElementHidingRules = function(test)
 {
   compareFilter(test, "##ddd", ["type=elemhide", "text=##ddd", "selector=ddd"]);
   compareFilter(test, "##body > div:first-child", ["type=elemhide", "text=##body > div:first-child", "selector=body > div:first-child"]);
-  compareFilter(test, "foo##ddd", ["type=elemhide", "text=foo##ddd", "selectorDomains=foo", "selector=ddd", "domains=FOO"]);
-  compareFilter(test, "foo,bar##ddd", ["type=elemhide", "text=foo,bar##ddd", "selectorDomains=foo,bar", "selector=ddd", "domains=BAR|FOO"]);
-  compareFilter(test, "foo,~bar##ddd", ["type=elemhide", "text=foo,~bar##ddd", "selectorDomains=foo", "selector=ddd", "domains=FOO|~BAR"]);
-  compareFilter(test, "foo,~baz,bar##ddd", ["type=elemhide", "text=foo,~baz,bar##ddd", "selectorDomains=foo,bar", "selector=ddd", "domains=BAR|FOO|~BAZ"]);
+  compareFilter(test, "fOO##ddd", ["type=elemhide", "text=fOO##ddd", "selectorDomains=foo", "selector=ddd", "domains=foo"]);
+  compareFilter(test, "Foo,bAr##ddd", ["type=elemhide", "text=Foo,bAr##ddd", "selectorDomains=foo,bar", "selector=ddd", "domains=bar|foo"]);
+  compareFilter(test, "foo,~baR##ddd", ["type=elemhide", "text=foo,~baR##ddd", "selectorDomains=foo", "selector=ddd", "domains=foo|~bar"]);
+  compareFilter(test, "foo,~baz,bar##ddd", ["type=elemhide", "text=foo,~baz,bar##ddd", "selectorDomains=foo,bar", "selector=ddd", "domains=bar|foo|~baz"]);
 
   test.done();
 };
 
 exports.testElementHidingExceptions = function(test)
 {
   compareFilter(test, "#@#ddd", ["type=elemhideexception", "text=#@#ddd", "selector=ddd"]);
   compareFilter(test, "#@#body > div:first-child", ["type=elemhideexception", "text=#@#body > div:first-child", "selector=body > div:first-child"]);
-  compareFilter(test, "foo#@#ddd", ["type=elemhideexception", "text=foo#@#ddd", "selectorDomains=foo", "selector=ddd", "domains=FOO"]);
-  compareFilter(test, "foo,bar#@#ddd", ["type=elemhideexception", "text=foo,bar#@#ddd", "selectorDomains=foo,bar", "selector=ddd", "domains=BAR|FOO"]);
-  compareFilter(test, "foo,~bar#@#ddd", ["type=elemhideexception", "text=foo,~bar#@#ddd", "selectorDomains=foo", "selector=ddd", "domains=FOO|~BAR"]);
-  compareFilter(test, "foo,~baz,bar#@#ddd", ["type=elemhideexception", "text=foo,~baz,bar#@#ddd", "selectorDomains=foo,bar", "selector=ddd", "domains=BAR|FOO|~BAZ"]);
+  compareFilter(test, "fOO#@#ddd", ["type=elemhideexception", "text=fOO#@#ddd", "selectorDomains=foo", "selector=ddd", "domains=foo"]);
+  compareFilter(test, "Foo,bAr#@#ddd", ["type=elemhideexception", "text=Foo,bAr#@#ddd", "selectorDomains=foo,bar", "selector=ddd", "domains=bar|foo"]);
+  compareFilter(test, "foo,~baR#@#ddd", ["type=elemhideexception", "text=foo,~baR#@#ddd", "selectorDomains=foo", "selector=ddd", "domains=foo|~bar"]);
+  compareFilter(test, "foo,~baz,bar#@#ddd", ["type=elemhideexception", "text=foo,~baz,bar#@#ddd", "selectorDomains=foo,bar", "selector=ddd", "domains=bar|foo|~baz"]);
 
   test.done();
 };
 
 exports.testElemHideEmulationFilters = function(test)
 {
   // Check valid domain combinations
-  compareFilter(test, "foo.com#?#:-abp-properties(abc)", ["type=elemhideemulation", "text=foo.com#?#:-abp-properties(abc)", "selectorDomains=foo.com", "selector=:-abp-properties(abc)", "domains=FOO.COM"]);
-  compareFilter(test, "foo.com,~bar.com#?#:-abp-properties(abc)", ["type=elemhideemulation", "text=foo.com,~bar.com#?#:-abp-properties(abc)", "selectorDomains=foo.com", "selector=:-abp-properties(abc)", "domains=FOO.COM|~BAR.COM"]);
-  compareFilter(test, "foo.com,~bar#?#:-abp-properties(abc)", ["type=elemhideemulation", "text=foo.com,~bar#?#:-abp-properties(abc)", "selectorDomains=foo.com", "selector=:-abp-properties(abc)", "domains=FOO.COM|~BAR"]);
-  compareFilter(test, "~foo.com,bar.com#?#:-abp-properties(abc)", ["type=elemhideemulation", "text=~foo.com,bar.com#?#:-abp-properties(abc)", "selectorDomains=bar.com", "selector=:-abp-properties(abc)", "domains=BAR.COM|~FOO.COM"]);
+  compareFilter(test, "fOO.cOm#?#:-abp-properties(abc)", ["type=elemhideemulation", "text=fOO.cOm#?#:-abp-properties(abc)", "selectorDomains=foo.com", "selector=:-abp-properties(abc)", "domains=foo.com"]);
+  compareFilter(test, "Foo.com,~bAr.com#?#:-abp-properties(abc)", ["type=elemhideemulation", "text=Foo.com,~bAr.com#?#:-abp-properties(abc)", "selectorDomains=foo.com", "selector=:-abp-properties(abc)", "domains=foo.com|~bar.com"]);
+  compareFilter(test, "foo.com,~baR#?#:-abp-properties(abc)", ["type=elemhideemulation", "text=foo.com,~baR#?#:-abp-properties(abc)", "selectorDomains=foo.com", "selector=:-abp-properties(abc)", "domains=foo.com|~bar"]);
+  compareFilter(test, "~foo.com,bar.com#?#:-abp-properties(abc)", ["type=elemhideemulation", "text=~foo.com,bar.com#?#:-abp-properties(abc)", "selectorDomains=bar.com", "selector=:-abp-properties(abc)", "domains=bar.com|~foo.com"]);
 
   // Check some special cases
   compareFilter(test, "#?#:-abp-properties(abc)", ["type=invalid", "text=#?#:-abp-properties(abc)", "reason=filter_elemhideemulation_nodomain"]);
-  compareFilter(test, "foo.com#?#abc", ["type=elemhideemulation", "text=foo.com#?#abc", "selectorDomains=foo.com", "selector=abc", "domains=FOO.COM"]);
-  compareFilter(test, "foo.com#?#:-abp-foobar(abc)", ["type=elemhideemulation", "text=foo.com#?#:-abp-foobar(abc)", "selectorDomains=foo.com", "selector=:-abp-foobar(abc)", "domains=FOO.COM"]);
-  compareFilter(test, "foo.com#?#aaa :-abp-properties(abc) bbb", ["type=elemhideemulation", "text=foo.com#?#aaa :-abp-properties(abc) bbb", "selectorDomains=foo.com", "selector=aaa :-abp-properties(abc) bbb", "domains=FOO.COM"]);
-  compareFilter(test, "foo.com#?#:-abp-properties(|background-image: url(data:*))", ["type=elemhideemulation", "text=foo.com#?#:-abp-properties(|background-image: url(data:*))", "selectorDomains=foo.com", "selector=:-abp-properties(|background-image: url(data:*))", "domains=FOO.COM"]);
+  compareFilter(test, "foo.com#?#abc", ["type=elemhideemulation", "text=foo.com#?#abc", "selectorDomains=foo.com", "selector=abc", "domains=foo.com"]);
+  compareFilter(test, "foo.com#?#:-abp-foobar(abc)", ["type=elemhideemulation", "text=foo.com#?#:-abp-foobar(abc)", "selectorDomains=foo.com", "selector=:-abp-foobar(abc)", "domains=foo.com"]);
+  compareFilter(test, "foo.com#?#aaa :-abp-properties(abc) bbb", ["type=elemhideemulation", "text=foo.com#?#aaa :-abp-properties(abc) bbb", "selectorDomains=foo.com", "selector=aaa :-abp-properties(abc) bbb", "domains=foo.com"]);
+  compareFilter(test, "foo.com#?#:-abp-properties(|background-image: url(data:*))", ["type=elemhideemulation", "text=foo.com#?#:-abp-properties(|background-image: url(data:*))", "selectorDomains=foo.com", "selector=:-abp-properties(|background-image: url(data:*))", "domains=foo.com"]);
 
   // Check conversion of legacy filters
-  compareFilter(test, "foo.com##[-abp-properties='abc']", ["type=elemhideemulation", "text=foo.com#?#:-abp-properties(abc)", "selectorDomains=foo.com", "selector=:-abp-properties(abc)", "domains=FOO.COM"]);
+  compareFilter(test, "foo.com##[-abp-properties='abc']", ["type=elemhideemulation", "text=foo.com#?#:-abp-properties(abc)", "selectorDomains=foo.com", "selector=:-abp-properties(abc)", "domains=foo.com"]);
   test.equal(Filter.fromText("foo.com##[-abp-properties='abc']"), Filter.fromText("foo.com#?#:-abp-properties(abc)"));
-  compareFilter(test, "foo.com#@#[-abp-properties='abc']", ["type=elemhideexception", "text=foo.com#@#[-abp-properties='abc']", "selectorDomains=foo.com", "selector=[-abp-properties='abc']", "domains=FOO.COM"]);
-  compareFilter(test, "foo.com#?#[-abp-properties='abc']", ["type=elemhideemulation", "text=foo.com#?#[-abp-properties='abc']", "selectorDomains=foo.com", "selector=[-abp-properties='abc']", "domains=FOO.COM"]);
-  compareFilter(test, "foo.com##aaa [-abp-properties='abc'] bbb", ["type=elemhideemulation", "text=foo.com#?#aaa :-abp-properties(abc) bbb", "selectorDomains=foo.com", "selector=aaa :-abp-properties(abc) bbb", "domains=FOO.COM"]);
+  compareFilter(test, "foo.com#@#[-abp-properties='abc']", ["type=elemhideexception", "text=foo.com#@#[-abp-properties='abc']", "selectorDomains=foo.com", "selector=[-abp-properties='abc']", "domains=foo.com"]);
+  compareFilter(test, "foo.com#?#[-abp-properties='abc']", ["type=elemhideemulation", "text=foo.com#?#[-abp-properties='abc']", "selectorDomains=foo.com", "selector=[-abp-properties='abc']", "domains=foo.com"]);
+  compareFilter(test, "foo.com##aaa [-abp-properties='abc'] bbb", ["type=elemhideemulation", "text=foo.com#?#aaa :-abp-properties(abc) bbb", "selectorDomains=foo.com", "selector=aaa :-abp-properties(abc) bbb", "domains=foo.com"]);
 
   // test matching -abp-properties= (https://issues.adblockplus.org/ticket/5037).
-  compareFilter(test, "foo.com##[-abp-properties-bogus='abc']", ["type=elemhide", "text=foo.com##[-abp-properties-bogus='abc']", "selectorDomains=foo.com", "selector=[-abp-properties-bogus='abc']", "domains=FOO.COM"]);
+  compareFilter(test, "foo.com##[-abp-properties-bogus='abc']", ["type=elemhide", "text=foo.com##[-abp-properties-bogus='abc']", "selectorDomains=foo.com", "selector=[-abp-properties-bogus='abc']", "domains=foo.com"]);
 
   test.done();
 };
 
 exports.testEmptyElemHideDomains = function(test)
 {
   let emptyDomainFilters = [
     ",##selector", ",,,##selector", "~,foo.com##selector", "foo.com,##selector",
     ",foo.com##selector", "foo.com,~##selector",
     "foo.com,,bar.com##selector", "foo.com,~,bar.com##selector"
@@ skipping 19 matching lines @@
       "selector=#foo\\7B color: red\\7D ",
       "domains="
     ]
   );
   compareFilter(
     test, "foo.com#?#:-abp-properties(/margin: [3-4]{2}/)", [
       "type=elemhideemulation",
       "text=foo.com#?#:-abp-properties(/margin: [3-4]{2}/)",
       "selectorDomains=foo.com",
       "selector=:-abp-properties(/margin: [3-4]\\7B 2\\7D /)",
-      "domains=FOO.COM"
+      "domains=foo.com"
     ]
   );
   test.done();
 };
 
 exports.testSnippetFilters = function(test)
 {
-  compareFilter(test, "foo.com#$#abc", ["type=snippet", "text=foo.com#$#abc", "scriptDomains=foo.com", "script=abc", "domains=FOO.COM"]);
-  compareFilter(test, "foo.com,~bar.com#$#abc", ["type=snippet", "text=foo.com,~bar.com#$#abc", "scriptDomains=foo.com", "script=abc", "domains=FOO.COM|~BAR.COM"]);
-  compareFilter(test, "foo.com,~bar#$#abc", ["type=snippet", "text=foo.com,~bar#$#abc", "scriptDomains=foo.com", "script=abc", "domains=FOO.COM|~BAR"]);
-  compareFilter(test, "~foo.com,bar.com#$#abc", ["type=snippet", "text=~foo.com,bar.com#$#abc", "scriptDomains=bar.com", "script=abc", "domains=BAR.COM|~FOO.COM"]);
+  compareFilter(test, "foo.com#$#abc", ["type=snippet", "text=foo.com#$#abc", "scriptDomains=foo.com", "script=abc", "domains=foo.com"]);
+  compareFilter(test, "foo.com,~bar.com#$#abc", ["type=snippet", "text=foo.com,~bar.com#$#abc", "scriptDomains=foo.com", "script=abc", "domains=foo.com|~bar.com"]);
+  compareFilter(test, "foo.com,~bar#$#abc", ["type=snippet", "text=foo.com,~bar#$#abc", "scriptDomains=foo.com", "script=abc", "domains=foo.com|~bar"]);
+  compareFilter(test, "~foo.com,bar.com#$#abc", ["type=snippet", "text=~foo.com,bar.com#$#abc", "scriptDomains=bar.com", "script=abc", "domains=bar.com|~foo.com"]);
 
   test.done();
 };
 
 exports.testFilterNormalization = function(test)
 {
   // Line breaks etc
   test.equal(Filter.normalize("\n\t\nad\ns"),
              "ads");
 
@@ skipping 40 matching lines @@
   );
   test.equal(
     normalized,
     "b$la$sitekey=foo,domain=domain.com|foo.com,csp=c s p"
   );
   compareFilter(
     test, normalized, [
       "type=filterlist",
       "text=" + normalized,
       "csp=c s p",
-      "domains=DOMAIN.COM|FOO.COM",
+      "domains=domain.com|foo.com",
       "sitekeys=FOO",
       "regexp=b\\$la",
       "contentType=" + t.CSP
     ]
   );
 
   // Some $csp edge cases
   test.equal(Filter.normalize("$csp= c s p"),
              "$csp=c s p");
   test.equal(Filter.normalize("$$csp= c s p"),
@@ skipping 50 matching lines @@
 
   test.equal(
     filterRelative.rewriteUrl("http://content.server/file/foo.txt?bar"),
     "http://content.server/file/foo.txt/disable"
   );
   test.equal(
     filterRelative.rewriteUrl("http://example.com/file/foo.txt?bar"),
     "http://example.com/file/foo.txt/disable"
   );
 
-  test.done();
-};
+  // Example from https://github.com/uBlockOrigin/uBlock-issues/issues/46#issuecomment-391190533
+  // The rewrite shouldn't happen.
+  let rewriteEvil = "/(^https?:\\/\\/[^/])/$script,rewrite=$1.evil.com";
+  let filterEvil = Filter.fromText(rewriteEvil);
+
+  test.equal(
+    filterEvil.rewriteUrl("https://www.adblockplus.org/script.js"),
+    "https://www.adblockplus.org/script.js"
+  );
+
+  test.done();
+};