--- a/devtools/client/netmonitor/test/browser_net_filter-flags.js
+++ b/devtools/client/netmonitor/test/browser_net_filter-flags.js
@@ -182,16 +182,29 @@ add_task(function* () {
   // Test mixing flags
   setFreetextFilter("-mime-type:HtmL status-code:200");
   testContents([0, 1, 1, 1, 1, 1, 1, 0]);
 
   // Test regex filter
   setFreetextFilter("regexp:content.*?Sam");
   testContents([1, 0, 0, 0, 0, 0, 0, 0]);
 
+  // Test transferred-larger-than
+  setFreetextFilter("transferred-larger-than:-1");
+  testContents([1, 1, 1, 1, 1, 1, 1, 1]);
+
+  setFreetextFilter("transferred-larger-than:0");
+  testContents([1, 1, 1, 0, 0, 0, 0, 0]);
+
+  setFreetextFilter("transferred-larger-than:33");
+  testContents([0, 1, 1, 0, 0, 0, 0, 0]);
+
+  setFreetextFilter("transferred-larger-than:34");
+  testContents([0, 0, 0, 0, 0, 0, 0, 0]);
+
   yield teardown(monitor);
 
   function testContents(visibility) {
     const items = getSortedRequests(store.getState());
     const visibleItems = getDisplayedRequests(store.getState());
 
     is(items.size, visibility.length,
       "There should be a specific amount of items in the requests menu.");