Issue 7181 - Keep a keyword-by-filter map after all

test/matcher.js

Index: test/matcher.js
===================================================================
--- a/test/matcher.js
+++ b/test/matcher.js
@@ -286,8 +286,30 @@
                                  RegExpFilter.typeMap.IMAGE));
   test.ok(!matcher.isWhitelisted("https://example.com/bar",
                                  RegExpFilter.typeMap.IMAGE));
   test.ok(!matcher.isWhitelisted("https://example.com/foo",
                                  RegExpFilter.typeMap.SUBDOCUMENT));
 
   test.done();
 };
+
+exports.testAddRemoveByKeyword = function(test)
+{
+  let matcher = new CombinedMatcher();
+
+  matcher.add(Filter.fromText("||example.com/foo/bar/image.jpg"));
+
+  // Add the same filter a second time to make sure it doesn't get added again
+  // by a different keyword.
+  matcher.add(Filter.fromText("||example.com/foo/bar/image.jpg"));
+
+  test.ok(!!matcher.matchesAny("https://example.com/foo/bar/image.jpg",
+                               RegExpFilter.typeMap.IMAGE));
+
+  matcher.remove(Filter.fromText("||example.com/foo/bar/image.jpg"));
+
+  // Make sure the filter got removed so there is no match.
+  test.ok(!matcher.matchesAny("https://example.com/foo/bar/image.jpg",
+                              RegExpFilter.typeMap.IMAGE));
+
+  test.done();
+};