1 files changed, 15 insertions, 2 deletions
diff --git a/components/script/dom/xrtest.rs b/components/script/dom/xrtest.rs
index 92f59bc0507..114260b89d9 100644
--- a/components/script/dom/xrtest.rs
+++ b/components/script/dom/xrtest.rs
@@ -13,7 +13,7 @@ use crate::dom::bindings::codegen::Bindings::XRTestBinding::{FakeXRDeviceInit, X
 use crate::dom::bindings::refcounted::{Trusted, TrustedPromise};
 use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
 use crate::dom::bindings::root::{Dom, DomRoot};
-use crate::dom::fakexrdevice::{get_origin, get_views, FakeXRDevice};
+use crate::dom::fakexrdevice::{get_origin, get_views, get_world, FakeXRDevice};
 use crate::dom::globalscope::GlobalScope;
 use crate::dom::promise::Promise;
 use crate::script_thread::ScriptThread;
@@ -106,6 +106,19 @@ impl XRTestMethods for XRTest {
             vec![]
         };
 
+        let world = if let Some(ref w) = init.world {
+            let w = match get_world(w) {
+                Ok(w) => w,
+                Err(e) => {
+                    p.reject_error(e);
+                    return p;
+                },
+            };
+            Some(w)
+        } else {
+            None
+        };
+
         let init = MockDeviceInit {
             viewer_origin: origin,
             views,
@@ -114,7 +127,7 @@ impl XRTestMethods for XRTest {
             supports_ar: false,
             floor_origin,
             supported_features,
-            world: None,
+            world,
         };
 
         let global = self.global();