diff --git a/components/script/dom/webidls/XRTest.webidl b/components/script/dom/webidls/XRTest.webidl
index 0071e4338b3..1ae98f703bf 100644
--- a/components/script/dom/webidls/XRTest.webidl
+++ b/components/script/dom/webidls/XRTest.webidl
@@ -20,7 +20,9 @@ interface XRTest {
 };
 
 dictionary FakeXRDeviceInit {
-    required boolean supportsImmersive;
+    boolean supportsImmersive = false;
+    sequence<XRSessionMode> supportedModes;
+
     required sequence<FakeXRViewInit> views;
 
     // this is actually sequence<any>, but we don't support
diff --git a/components/script/dom/xrtest.rs b/components/script/dom/xrtest.rs
index 114260b89d9..37707c3ce8e 100644
--- a/components/script/dom/xrtest.rs
+++ b/components/script/dom/xrtest.rs
@@ -9,6 +9,7 @@
 use crate::dom::bindings::callback::ExceptionHandling;
 use crate::dom::bindings::cell::DomRefCell;
 use crate::dom::bindings::codegen::Bindings::FunctionBinding::Function;
+use crate::dom::bindings::codegen::Bindings::XRSystemBinding::XRSessionMode;
 use crate::dom::bindings::codegen::Bindings::XRTestBinding::{FakeXRDeviceInit, XRTestMethods};
 use crate::dom::bindings::refcounted::{Trusted, TrustedPromise};
 use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
@@ -119,12 +120,24 @@ impl XRTestMethods for XRTest {
             None
         };
 
+        let (mut supports_inline, mut supports_vr, mut supports_ar) = (false, false, false);
+
+        if let Some(ref modes) = init.supportedModes {
+            for mode in modes {
+                match mode {
+                    XRSessionMode::Immersive_vr => supports_vr = true,
+                    XRSessionMode::Immersive_ar => supports_ar = true,
+                    XRSessionMode::Inline => supports_inline = true,
+                }
+            }
+        }
+
         let init = MockDeviceInit {
             viewer_origin: origin,
             views,
-            supports_inline: false,
-            supports_vr: init.supportsImmersive,
-            supports_ar: false,
+            supports_inline,
+            supports_vr,
+            supports_ar,
             floor_origin,
             supported_features,
             world,
diff --git a/tests/wpt/metadata/webxr/ar-module/xrDevice_isSessionSupported_immersive-ar.https.html.ini b/tests/wpt/metadata/webxr/ar-module/xrDevice_isSessionSupported_immersive-ar.https.html.ini
deleted file mode 100644
index 178edb6ed13..00000000000
--- a/tests/wpt/metadata/webxr/ar-module/xrDevice_isSessionSupported_immersive-ar.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[xrDevice_isSessionSupported_immersive-ar.https.html]
-  [isSessionSupported resolves to false for immersive-ar on an unsupported device]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/webxr/ar-module/xrDevice_requestSession_immersive-ar.https.html.ini b/tests/wpt/metadata/webxr/ar-module/xrDevice_requestSession_immersive-ar.https.html.ini
deleted file mode 100644
index 956d3ed136a..00000000000
--- a/tests/wpt/metadata/webxr/ar-module/xrDevice_requestSession_immersive-ar.https.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[xrDevice_requestSession_immersive-ar.https.html]
-  [Tests requestSession rejects immersive-ar mode when unsupported]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/webxr/dom-overlay/ar_dom_overlay.https.html.ini b/tests/wpt/metadata/webxr/dom-overlay/ar_dom_overlay.https.html.ini
index 224197c5a20..5e168fd4be5 100644
--- a/tests/wpt/metadata/webxr/dom-overlay/ar_dom_overlay.https.html.ini
+++ b/tests/wpt/metadata/webxr/dom-overlay/ar_dom_overlay.https.html.ini
@@ -1,4 +1,5 @@
 [ar_dom_overlay.https.html]
+  expected: ERROR
   [Ensures DOM Overlay element selection works]
     expected: FAIL
 
@@ -6,7 +7,7 @@
     expected: FAIL
 
   [Ensures DOM Overlay input deduplication works]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Ensures DOM Overlay feature works for immersive-ar, body element]
     expected: FAIL
@@ -15,11 +16,11 @@
     expected: FAIL
 
   [Ensures DOM Overlay Fullscreen API doesn't change DOM overlay]
-    expected: FAIL
+    expected: NOTRUN
 
   [Ensures DOM Overlay feature works for immersive-ar, div element]
     expected: FAIL
 
   [Ensures DOM Overlay interactions on cross origin iframe are ignored]
-    expected: FAIL
+    expected: NOTRUN
 
diff --git a/tests/wpt/metadata/webxr/dom-overlay/ar_dom_overlay_hit_test.https.html.ini b/tests/wpt/metadata/webxr/dom-overlay/ar_dom_overlay_hit_test.https.html.ini
index 39d3a1c94ce..26ed26f69c2 100644
--- a/tests/wpt/metadata/webxr/dom-overlay/ar_dom_overlay_hit_test.https.html.ini
+++ b/tests/wpt/metadata/webxr/dom-overlay/ar_dom_overlay_hit_test.https.html.ini
@@ -1,2 +1,4 @@
 [ar_dom_overlay_hit_test.https.html]
-  expected: ERROR
+  [Ensures DOM Overlay interactions on cross origin iframe do not cause hit test results to come up]
+    expected: FAIL
+
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 43a57321277..a40590440ef 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -14609,21 +14609,21 @@
    },
    "webxr": {
     "create_session.html": [
-     "af76c5a812d7d05a0158194560933def3fbdb9f9",
+     "5b5d485b372bfffb22204bc162c9e182306395cb",
      [
       null,
       {}
      ]
     ],
     "layers.html": [
-     "31f4b6bd51cfcca47666331857bd2bbdf84d2f5e",
+     "49821d7661f92bc9cf22232d3fcb391c2cdc7295",
      [
       null,
       {}
      ]
     ],
     "obtain_frame.html": [
-     "74fda5bad43e8ea95552e65380e83952680e8469",
+     "d9ff25729f9cdfd348e7c9914ce2dacd231e13a0",
      [
       null,
       {}
diff --git a/tests/wpt/mozilla/tests/webxr/create_session.html b/tests/wpt/mozilla/tests/webxr/create_session.html
index af76c5a812d..5b5d485b372 100644
--- a/tests/wpt/mozilla/tests/webxr/create_session.html
+++ b/tests/wpt/mozilla/tests/webxr/create_session.html
@@ -8,7 +8,7 @@
         <script>
           async_test(function(t) {
               navigator.xr.test.simulateDeviceConnection({
-              supportsImmersive: true,
+              supportedModes: ["immersive-vr"],
               views: TEST_VIEWS,
               viewerOrigin: {position: [0.5, 0.1, 0.1], orientation: [1, 0, 0, 1] }
             }).then((m) => {
diff --git a/tests/wpt/mozilla/tests/webxr/layers.html b/tests/wpt/mozilla/tests/webxr/layers.html
index 31f4b6bd51c..49821d7661f 100644
--- a/tests/wpt/mozilla/tests/webxr/layers.html
+++ b/tests/wpt/mozilla/tests/webxr/layers.html
@@ -12,7 +12,7 @@
           let gl = canvas.getContext('webgl');
           promise_test(async function() {
             let mock = await navigator.xr.test.simulateDeviceConnection({
-              supportsImmersive: true,
+              supportedModes: ["immersive-vr"],
               views: TEST_VIEWS,
               viewerOrigin: {position: [0.5, 0.1, 0.1], orientation: [1, 0, 0, 1] }
             });
diff --git a/tests/wpt/mozilla/tests/webxr/obtain_frame.html b/tests/wpt/mozilla/tests/webxr/obtain_frame.html
index 74fda5bad43..d9ff25729f9 100644
--- a/tests/wpt/mozilla/tests/webxr/obtain_frame.html
+++ b/tests/wpt/mozilla/tests/webxr/obtain_frame.html
@@ -12,7 +12,7 @@
           let gl = canvas.getContext('webgl');
           promise_test(async function() {
             let mock = await navigator.xr.test.simulateDeviceConnection({
-              supportsImmersive: true,
+              supportedModes: ["immersive-vr"],
               views: TEST_VIEWS,
               viewerOrigin: {position: [0.5, 0.1, 0.1], orientation: [1, 0, 0, 1] }
             });