Issue 7043 - Accept whitelist filters with blank CSPs

test/filterClasses.js

Index: test/filterClasses.js
===================================================================
--- a/test/filterClasses.js
+++ b/test/filterClasses.js
@@ -339,16 +339,21 @@
   compareFilter(test, "@@bla$~script,~other,~donottrack", ["type=invalid", "text=@@bla$~script,~other,~donottrack", "reason=filter_unknown_option"]);
   compareFilter(test, "@@bla$donottrack", ["type=invalid", "text=@@bla$donottrack", "reason=filter_unknown_option"]);
   compareFilter(test, "@@bla$foobar", ["type=invalid", "text=@@bla$foobar", "reason=filter_unknown_option"]);
   compareFilter(test, "@@bla$image,foobar", ["type=invalid", "text=@@bla$image,foobar", "reason=filter_unknown_option"]);
   compareFilter(test, "@@bla$foobar,image", ["type=invalid", "text=@@bla$foobar,image", "reason=filter_unknown_option"]);
 
   compareFilter(test, "bla$csp", ["type=invalid", "text=bla$csp", "reason=filter_invalid_csp"]);
   compareFilter(test, "bla$csp=", ["type=invalid", "text=bla$csp=", "reason=filter_invalid_csp"]);
+
+  // Blank CSP values are allowed for whitelist filters.
+  compareFilter(test, "@@bla$csp", ["type=whitelist", "text=@@bla$csp", "regexp=bla", "contentType=" + t.CSP]);
+  compareFilter(test, "@@bla$csp=", ["type=whitelist", "text=@@bla$csp=", "regexp=bla", "contentType=" + t.CSP]);
+
   compareFilter(test, "bla$csp=report-uri", ["type=invalid", "text=bla$csp=report-uri", "reason=filter_invalid_csp"]);
   compareFilter(test, "bla$csp=foo,csp=report-to", ["type=invalid", "text=bla$csp=foo,csp=report-to", "reason=filter_invalid_csp"]);
   compareFilter(test, "bla$csp=foo,csp=referrer foo", ["type=invalid", "text=bla$csp=foo,csp=referrer foo", "reason=filter_invalid_csp"]);
   compareFilter(test, "bla$csp=foo,csp=base-uri", ["type=invalid", "text=bla$csp=foo,csp=base-uri", "reason=filter_invalid_csp"]);
   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();