diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index a2623a0c338..b17f863e64d 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -11222,7 +11222,10 @@
      {}
     ]
    ],
-   "mozilla/xmlhttprequest_url.html": []
+   "mozilla/xmlhttprequest_url.html": [],
+   "webxr/resources/webxr-util.js": [
+    []
+   ]
   },
   "testharness": {
    "bluetooth/advertisingEvent/watchAdvertisements-succeeds.html": [
@@ -13927,6 +13930,18 @@
      "mozilla/xmlhttprequest_url.html",
      {}
     ]
+   ],
+   "webxr/create_session.html": [
+    [
+     "webxr/create_session.html",
+     {}
+    ]
+   ],
+   "webxr/obtain_frame.html": [
+    [
+     "webxr/obtain_frame.html",
+     {}
+    ]
    ]
   },
   "visual": {
@@ -21112,6 +21127,18 @@
   "mozilla/xmlhttprequest_url.html": [
    "e5d10f27c06e1febd3bb70f8f128194fc3f63861",
    "testharness"
+  ],
+  "webxr/create_session.html": [
+   "306ab85d3b1b914d2dd7c11a3b03dccd990148ae",
+   "testharness"
+  ],
+  "webxr/obtain_frame.html": [
+   "1089bb25c2f6b26db4e21b6bf07c28add3fee5ec",
+   "testharness"
+  ],
+  "webxr/resources/webxr-util.js": [
+   "505173c82998a80b1e543f1a18aefaf1891f8269",
+   "support"
   ]
  },
  "url_base": "/_mozilla/",
diff --git a/tests/wpt/mozilla/meta/webxr/__dir__.ini b/tests/wpt/mozilla/meta/webxr/__dir__.ini
new file mode 100644
index 00000000000..fe96a649902
--- /dev/null
+++ b/tests/wpt/mozilla/meta/webxr/__dir__.ini
@@ -0,0 +1,2 @@
+prefs: [dom.webxr.enabled:true, dom.webxr.test:true]
+
diff --git a/tests/wpt/mozilla/tests/webxr/create_session.html b/tests/wpt/mozilla/tests/webxr/create_session.html
new file mode 100644
index 00000000000..306ab85d3b1
--- /dev/null
+++ b/tests/wpt/mozilla/tests/webxr/create_session.html
@@ -0,0 +1,15 @@
+<html>
+    <head>
+        <script src="/resources/testharness.js"></script>
+        <script src="/resources/testharnessreport.js"></script>
+    </head>
+    <body>
+        <script>
+          async_test(function(t) {
+              navigator.xr.test.simulateDeviceConnection({supportsImmersive: true}).then((m) => {
+                return navigator.xr.requestSession({mode: "immersive-vr"})
+              }).then(() => t.done());
+          });
+        </script>
+    </body>
+</html>
diff --git a/tests/wpt/mozilla/tests/webxr/obtain_frame.html b/tests/wpt/mozilla/tests/webxr/obtain_frame.html
new file mode 100644
index 00000000000..1089bb25c2f
--- /dev/null
+++ b/tests/wpt/mozilla/tests/webxr/obtain_frame.html
@@ -0,0 +1,62 @@
+<html>
+    <head>
+        <script src="/resources/testharness.js"></script>
+        <script src="/resources/testharnessreport.js"></script>
+        <script src="./resources/webxr-util.js"></script>
+    </head>
+    <body>
+          <canvas id="canvas" width="640" height="480"></canvas>
+
+        <script>
+          let session;
+          let mock;
+          let canvas = document.getElementById("canvas");
+          let gl = canvas.getContext('webgl');
+
+          promise_test(function() {
+              return navigator.xr.test.simulateDeviceConnection({supportsImmersive: true}).then((m) => {
+                mock = m;
+                mock.setViewerOrigin({position: [0.5, 0, 0, 1], orientation: [0, 0, 0, 1] });
+                mock.setViews(TEST_VIEWS);
+                return navigator.xr.requestSession({mode: "immersive-vr"});
+              })
+              .then((s) => {
+                session = s;
+                return session.updateRenderState({"baseLayer": new XRWebGLLayer(session, gl, {})})
+              })
+              .then(() => {
+                return new Promise(function(resolve, reject) {
+                  session.requestAnimationFrame(function(time, frame) {
+                      session.requestReferenceSpace("local").then((space) => {
+                      let pose = frame.getViewerPose(space);
+                      for (view of pose.views) {
+                        assert_matrix_approx_equals(view.projectionMatrix, VALID_PROJECTION_MATRIX, 0.001, "left projection matrix");
+
+                        if (view.eye == "left") {
+                          assert_matrix_approx_equals(view.transform.matrix, [1,0,0,0, 0,1,0,0, 0,0,1,0, 0.4,0,0,1], 0.001, "left transform");
+                          let position = view.transform.position;
+                          assert_approx_equals(position.x, 0.4, 0.001, "left x value");
+                          assert_approx_equals(position.y, 0, 0.001, "left y value");
+                          assert_approx_equals(position.z, 0, 0.001, "left z value");
+                          assert_approx_equals(position.w, 1, 0.001, "left w value");
+                        } else if (view.eye == "right") {
+                          assert_matrix_approx_equals(view.transform.matrix, [1,0,0,0, 0,1,0,0, 0,0,1,0, 0.6,0,0,1], 0.001, "right transform");
+                          let position = view.transform.position;
+                          assert_approx_equals(position.x, 0.6, 0.001, "left x value");
+                          assert_approx_equals(position.y, 0, 0.001, "left y value");
+                          assert_approx_equals(position.z, 0, 0.001, "left z value");
+                          assert_approx_equals(position.w, 1, 0.001, "left w value");
+                        } else {
+                          reject("got unknown view");
+                        }
+                      }
+                      resolve();
+                    }).catch((e) => reject(e));
+                  });
+                });
+
+              });
+          });
+        </script>
+    </body>
+</html>
diff --git a/tests/wpt/mozilla/tests/webxr/resources/webxr-util.js b/tests/wpt/mozilla/tests/webxr/resources/webxr-util.js
new file mode 100644
index 00000000000..505173c8299
--- /dev/null
+++ b/tests/wpt/mozilla/tests/webxr/resources/webxr-util.js
@@ -0,0 +1,17 @@
+// pieced together from various things in wpt/webxr/resources
+
+const VALID_PROJECTION_MATRIX = [1, 0, 0, 0, 0, 1, 0, 0, 3, 2, -1, -1, 0, 0, -0.2, 0];
+const LEFT_OFFSET = {position: [-0.1, 0, 0], orientation: [0,0,0,0]};
+const RIGHT_OFFSET = {position: [0.1, 0, 0], orientation: [0,0,0,0]};
+
+let assert_matrix_approx_equals = function(m1, m2, epsilon, prefix = "") {
+  assert_equals(m1.length, m2.length, prefix + "Matrix lengths should match");
+  for(var i = 0; i < m1.length; ++i) {
+    assert_approx_equals(m1[i], m2[i], epsilon, m1 + prefix + "Component number " + i + " should match");
+  }
+}
+
+const TEST_VIEWS = [
+    {eye: "left", projectionMatrix: VALID_PROJECTION_MATRIX, viewOffset: LEFT_OFFSET},
+    {eye: "right", projectionMatrix: VALID_PROJECTION_MATRIX, viewOffset: RIGHT_OFFSET}
+];
