diff --git a/Tests/LibWeb/Text/expected/wpt-import/dom/events/Event-constants.txt b/Tests/LibWeb/Text/expected/wpt-import/dom/events/Event-constants.txt
index f0d0f537f3..a1e901f326 100644
--- a/Tests/LibWeb/Text/expected/wpt-import/dom/events/Event-constants.txt
+++ b/Tests/LibWeb/Text/expected/wpt-import/dom/events/Event-constants.txt
@@ -1,10 +1,14 @@
 Summary
 
-Harness status: Error
+Harness status: OK
 
 Rerun
 
-Found  tests
+Found 4 tests
 
+4 Pass
 Details
-Result	Test Name	Message
\ No newline at end of file
+Result	Test Name	MessagePass	Constants for eventPhase on Event interface object.	
+Pass	Constants for eventPhase on Event prototype object.	
+Pass	Constants for eventPhase on Event object.	
+Pass	Constants for eventPhase on CustomEvent object.	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/input/wpt-import/dom/constants.js b/Tests/LibWeb/Text/input/wpt-import/dom/constants.js
new file mode 100644
index 0000000000..397df96fbc
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/dom/constants.js
@@ -0,0 +1,11 @@
+function testConstants(objects, constants, msg) {
+  objects.forEach(function(arr) {
+    var o = arr[0], desc = arr[1];
+    test(function() {
+      constants.forEach(function(d) {
+        assert_true(d[0] in o, "Object " + o + " doesn't have " + d[0])
+        assert_equals(o[d[0]], d[1], "Object " + o + " value for " + d[0] + " is wrong")
+      })
+    }, "Constants for " + msg + " on " + desc + ".")
+  })
+}