From 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 03:47:29 +0200
Subject: Adding upstream version 115.8.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 testing/web-platform/tests/webxr/anchors/META.yml  |   1 +
 .../ar_anchor_freefloating_create_move.https.html  |  94 ++++++++++++++++
 ...r_anchor_freefloating_delay_creation.https.html | 122 +++++++++++++++++++++
 .../ar_anchor_freefloating_failure.https.html      |  72 ++++++++++++
 ...nchor_freefloating_pause_resume_stop.https.html | 115 +++++++++++++++++++
 .../webxr/anchors/ar_anchor_getAnchors.https.html  |  58 ++++++++++
 .../webxr/anchors/ar_anchor_states.https.html      | 114 +++++++++++++++++++
 .../tests/webxr/anchors/idlharness.https.window.js |  16 +++
 8 files changed, 592 insertions(+)
 create mode 100644 testing/web-platform/tests/webxr/anchors/META.yml
 create mode 100644 testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_create_move.https.html
 create mode 100644 testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_delay_creation.https.html
 create mode 100644 testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_failure.https.html
 create mode 100644 testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_pause_resume_stop.https.html
 create mode 100644 testing/web-platform/tests/webxr/anchors/ar_anchor_getAnchors.https.html
 create mode 100644 testing/web-platform/tests/webxr/anchors/ar_anchor_states.https.html
 create mode 100644 testing/web-platform/tests/webxr/anchors/idlharness.https.window.js

(limited to 'testing/web-platform/tests/webxr/anchors')
diff --git a/testing/web-platform/tests/webxr/anchors/META.yml b/testing/web-platform/tests/webxr/anchors/META.yml
new file mode 100644
index 0000000000..0b7f740ac5
--- /dev/null
+++ b/testing/web-platform/tests/webxr/anchors/META.yml
@@ -0,0 +1 @@
+spec: https://immersive-web.github.io/anchors/
diff --git a/testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_create_move.https.html b/testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_create_move.https.html
new file mode 100644
index 0000000000..87f7556007
--- /dev/null
+++ b/testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_create_move.https.html
@@ -0,0 +1,94 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../resources/webxr_util.js"></script>
+<script src="../resources/webxr_test_asserts.js"></script>
+<script src="../resources/webxr_test_constants.js"></script>
+<script src="../resources/webxr_test_constants_fake_world.js"></script>
+
+<script>
+
+// 1m above world origin.
+const VIEWER_ORIGIN_TRANSFORM = {
+  position: [0, 1, 0],
+  orientation: [0, 0, 0, 1],
+};
+
+const fakeDeviceInitParams = {
+  supportedModes: ["immersive-ar"],
+  views: VALID_VIEWS,
+  supportedFeatures: ALL_FEATURES,
+  viewerOrigin: VIEWER_ORIGIN_TRANSFORM,
+};
+
+// All test cases require anchors.
+const sessionInit = { 'requiredFeatures': ['anchors'] };
+
+// Create an anchor, move it and verify that new pose gets propagated to the caller.
+const anchorCreateAndMove = function(session, fakeDeviceController, t) {
+  const debug = xr_debug.bind(this, 'anchorCreateAndMove');
+
+  let anchorController = null;
+  fakeDeviceController.setAnchorCreationCallback((parameters, controller) => {
+      anchorController = controller;
+      return Promise.resolve(true);
+  });
+
+  const watcherDone = new Event("watcherdone");
+  const eventWatcher = new EventWatcher(t, session, ["watcherdone"]);
+  const eventPromise = eventWatcher.wait_for(["watcherdone"]);
+
+  session.requestReferenceSpace('local').then((localRefSpace) => {
+    debug("requesting animation frame");
+
+    session.requestAnimationFrame((time, frame) => {
+      debug("rAF 1");
+
+      let createdAnchor = null;
+      frame.createAnchor(new XRRigidTransform(), localRefSpace)
+        .then((anchor) => {
+          createdAnchor = anchor;
+        });
+
+      session.requestAnimationFrame((time_2, frame_2) => {
+        debug("rAF 2");
+
+        const pre_move_pose = frame_2.getPose(createdAnchor.anchorSpace, localRefSpace);
+
+        t.step(() => {
+          assert_true(frame_2.trackedAnchors.has(createdAnchor),
+                      "Newly created anchor must be in tracked anchors set on subsequent RAF (2)!");
+          // We have created an anchor with an identity pose relative to local space and have not moved it yet:
+          assert_matrix_approx_equals(pre_move_pose.transform.matrix,
+                                      IDENTITY_MATRIX, FLOAT_EPSILON);
+        });
+
+        anchorController.setAnchorOrigin(VALID_POSE_TRANSFORM);
+
+        session.requestAnimationFrame((time_3, frame_3) => {
+          debug("rAF 3");
+
+          const post_move_pose = frame_3.getPose(createdAnchor.anchorSpace, localRefSpace);
+
+          t.step(() => {
+            assert_true(frame_3.trackedAnchors.has(createdAnchor),
+                        "Newly created anchor must be in tracked anchors set on subsequent RAF (3)!");
+            // The anchor was moved by VALID_POSE_TRANSFORM, validate that its pose got adjusted:
+            assert_matrix_approx_equals(post_move_pose.transform.matrix,
+                                        VALID_POSE_MATRIX, FLOAT_EPSILON);
+          });
+
+          session.dispatchEvent(watcherDone);
+        });
+      });
+    });
+  }); // session.requestReferenceSpace(...).then({...});
+
+  return eventPromise;
+};
+
+xr_session_promise_test(
+  "Ensures free-floating anchor move gets propagated to anchor poses",
+  anchorCreateAndMove, fakeDeviceInitParams, 'immersive-ar', sessionInit);
+
+</script>
diff --git a/testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_delay_creation.https.html b/testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_delay_creation.https.html
new file mode 100644
index 0000000000..686eacf848
--- /dev/null
+++ b/testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_delay_creation.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../resources/webxr_util.js"></script>
+<script src="../resources/webxr_test_asserts.js"></script>
+<script src="../resources/webxr_test_constants.js"></script>
+<script src="../resources/webxr_test_constants_fake_world.js"></script>
+
+<script>
+
+// 1m above world origin.
+const VIEWER_ORIGIN_TRANSFORM = {
+  position: [0, 1, 0],
+  orientation: [0, 0, 0, 1],
+};
+
+const fakeDeviceInitParams = {
+  supportedModes: ["immersive-ar"],
+  views: VALID_VIEWS,
+  supportedFeatures: ALL_FEATURES,
+  viewerOrigin: VIEWER_ORIGIN_TRANSFORM,
+};
+
+// All test cases require anchors.
+const sessionInit = { 'requiredFeatures': ['anchors'] };
+
+// Creates a test function that will attempt to create an anchor with a delay.
+// In case the anchor creation is expected to succeed, the test will then
+// validate whether the anchor belongs to frame.trackedAnchors, has a valid pose,
+// and that after deleting it, it no longer allows access to its anchorSpace.
+// |shouldSucceed| - true if the anchor creation is expected to succeed.
+const anchorCreationDelayedCreator = function(shouldSucceed) {
+  return function(session, fakeDeviceController, t) {
+    const debug = xr_debug.bind(this, 'anchorCreationDelayed' + (shouldSucceed ? 'Success' : 'Failure'));
+
+    let anchorCreationResolve = null;
+    fakeDeviceController.setAnchorCreationCallback((parameters, controller) => {
+        return new Promise((resolve) => {
+          anchorCreationResolve = resolve;
+        });
+    });
+
+    const watcherDone = new Event("watcherdone");
+    const creationDelayedEvent = new Event("creationdelayed");
+    const eventWatcher = new EventWatcher(t, session, ["creationdelayed", "watcherdone"]);
+    const eventPromise = eventWatcher.wait_for(["creationdelayed", "watcherdone"]);
+
+    session.requestReferenceSpace('local').then((localRefSpace) => {
+      debug("requesting animation frame");
+
+      session.requestAnimationFrame((time, frame) => {
+        debug("rAF 1");
+
+        let createdAnchor = null;
+        frame.createAnchor(new XRRigidTransform(), localRefSpace)
+          .then((anchor) => {
+            createdAnchor = anchor;
+
+            t.step(() => {
+              assert_true(anchor != null, "Returned anchor should not be null!");
+              assert_true(shouldSucceed,
+                          "Anchor creation succeeded when it was expected to fail!");
+            });
+          })
+          .catch((error) => {
+            t.step(() => {
+              assert_false(shouldSucceed,
+                           "Anchor creation failed when it was expected to succeed!");
+            });
+
+            session.dispatchEvent(watcherDone);
+          });
+
+        session.requestAnimationFrame(() => {
+          debug("rAF 2");
+
+          session.dispatchEvent(creationDelayedEvent);
+
+          anchorCreationResolve(shouldSucceed);
+
+          session.requestAnimationFrame((time_2, frame_2) => {
+            debug("rAF 3");
+
+            if(shouldSucceed) {
+              t.step(() => {
+                assert_true(createdAnchor != null);
+                assert_true(frame_2.trackedAnchors.has(createdAnchor),
+                            "Newly created anchor must be in tracked anchors set!");
+                assert_true(createdAnchor.anchorSpace != null,
+                            "Newly created anchor must have a non-null anchor space!");
+                assert_true(frame_2.getPose(createdAnchor.anchorSpace, localRefSpace) != null,
+                            "Newly created anchor should have a pose!");
+              });
+
+              createdAnchor.delete();
+
+              t.step(() => {
+                assert_throws_dom('InvalidStateError', () => {
+                  createdAnchor.anchorSpace;
+                });
+              });
+
+              session.dispatchEvent(watcherDone);
+            }
+          });
+        });
+      });
+    }); // session.requestReferenceSpace(...).then({...});
+
+    return eventPromise;
+  };
+};
+
+xr_session_promise_test(
+  "Ensures free-floating anchor creation with delayed success is handled correctly",
+  anchorCreationDelayedCreator(true), fakeDeviceInitParams, 'immersive-ar', sessionInit);
+
+xr_session_promise_test(
+  "Ensures free-floating anchor creation with delayed failure is handled correctly",
+  anchorCreationDelayedCreator(false), fakeDeviceInitParams, 'immersive-ar', sessionInit);
+
+</script>
diff --git a/testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_failure.https.html b/testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_failure.https.html
new file mode 100644
index 0000000000..dd03be0ad5
--- /dev/null
+++ b/testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_failure.https.html
@@ -0,0 +1,72 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../resources/webxr_util.js"></script>
+<script src="../resources/webxr_test_asserts.js"></script>
+<script src="../resources/webxr_test_constants.js"></script>
+<script src="../resources/webxr_test_constants_fake_world.js"></script>
+
+<script>
+
+// 1m above world origin.
+const VIEWER_ORIGIN_TRANSFORM = {
+  position: [0, 1, 0],
+  orientation: [0, 0, 0, 1],
+};
+
+const fakeDeviceInitParams = {
+  supportedModes: ["immersive-ar"],
+  views: VALID_VIEWS,
+  supportedFeatures: ALL_FEATURES,
+  viewerOrigin: VIEWER_ORIGIN_TRANSFORM,
+};
+
+// All test cases require anchors.
+const sessionInit = { 'requiredFeatures': ['anchors'] };
+
+// Fail the anchor creation & see if it gets communicated to the caller.
+// The concrete error is not specified by the WebXR Test API / WebXR Anchors.
+const anchorCreationFail = function(session, fakeDeviceController, t) {
+  const debug = xr_debug.bind(this, 'anchorCreationFail');
+
+  fakeDeviceController.setAnchorCreationCallback((parameters, controller) => {
+      // Immediately fail anchor creation.
+      return Promise.resolve(false);
+  });
+
+  const watcherDone = new Event("watcherdone");
+  const eventWatcher = new EventWatcher(t, session, ["watcherdone"]);
+  const eventPromise = eventWatcher.wait_for(["watcherdone"]);
+
+  session.requestReferenceSpace('local').then((localRefSpace) => {
+    debug("requesting animation frame");
+
+    session.requestAnimationFrame((time, frame) => {
+      debug("rAF 1");
+
+      frame.createAnchor(new XRRigidTransform(), localRefSpace)
+        .then((anchor) => {
+          t.step(() => {
+            assert_false(true, "Anchor creation should fail!");
+          });
+        })
+        .catch((error) => {
+          session.dispatchEvent(watcherDone);
+        });
+
+      // Anchor result will only take effect with frame data - schedule
+      // a frame after we requested anchor creation, otherwise the test will time out.
+      session.requestAnimationFrame(() => {
+        debug("rAF 2");
+      });
+    });
+  }); // session.requestReferenceSpace(...).then({...});
+
+  return eventPromise;
+}
+
+xr_session_promise_test(
+  "Ensures free-floating anchor creation failure is handled correctly",
+  anchorCreationFail, fakeDeviceInitParams, 'immersive-ar', sessionInit);
+
+</script>
diff --git a/testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_pause_resume_stop.https.html b/testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_pause_resume_stop.https.html
new file mode 100644
index 0000000000..6eb6bc76e6
--- /dev/null
+++ b/testing/web-platform/tests/webxr/anchors/ar_anchor_freefloating_pause_resume_stop.https.html
@@ -0,0 +1,115 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../resources/webxr_util.js"></script>
+<script src="../resources/webxr_test_asserts.js"></script>
+<script src="../resources/webxr_test_constants.js"></script>
+<script src="../resources/webxr_test_constants_fake_world.js"></script>
+
+<script>
+
+// 1m above world origin.
+const VIEWER_ORIGIN_TRANSFORM = {
+  position: [0, 1, 0],
+  orientation: [0, 0, 0, 1],
+};
+
+const fakeDeviceInitParams = {
+  supportedModes: ["immersive-ar"],
+  views: VALID_VIEWS,
+  supportedFeatures: ALL_FEATURES,
+  viewerOrigin: VIEWER_ORIGIN_TRANSFORM,
+};
+
+// All test cases require anchors.
+const sessionInit = { 'requiredFeatures': ['anchors'] };
+
+// Create an anchor, pause tracking, resume tracking, & stop tracking and validate
+// that the state changes are propagated to the caller.
+const anchorCreatePauseTrackingResumeAndDelete = function(session, fakeDeviceController, t) {
+  const debug = xr_debug.bind(this, 'anchorCreatePauseTrackingResumeAndDelete');
+
+  let anchorController = null;
+  fakeDeviceController.setAnchorCreationCallback((parameters, controller) => {
+      anchorController = controller;
+      return Promise.resolve(true);
+  });
+
+  const watcherDone = new Event("watcherdone");
+  const eventWatcher = new EventWatcher(t, session, ["watcherdone"]);
+  const eventPromise = eventWatcher.wait_for(["watcherdone"]);
+
+  session.requestReferenceSpace('local').then((localRefSpace) => {
+    debug("requesting animation frame");
+
+    session.requestAnimationFrame((time, frame) => {
+      debug("rAF 1");
+
+      let createdAnchor = null;
+      frame.createAnchor(new XRRigidTransform(), localRefSpace)
+        .then((anchor) => {
+          createdAnchor = anchor;
+        });
+
+      session.requestAnimationFrame((time_2, frame_2) => {
+        debug("rAF 2");
+
+        t.step(() => {
+          assert_true(frame_2.getPose(createdAnchor.anchorSpace, localRefSpace) != null,
+                      "Newly created anchor should have a pose!");
+          assert_true(frame_2.trackedAnchors.has(createdAnchor),
+                      "Newly created anchor must be in tracked anchors set on subsequent RAF (2)!");
+        });
+
+        anchorController.pauseTracking();
+
+        session.requestAnimationFrame((time_3, frame_3) => {
+          debug("rAF 3");
+
+          t.step(() => {
+            assert_true(frame_3.getPose(createdAnchor.anchorSpace, localRefSpace) == null,
+                        "Newly created anchor with paused tracking should not have a pose!");
+            assert_true(frame_3.trackedAnchors.has(createdAnchor),
+                        "Newly created anchor with paused tracking must be in tracked anchors set on subsequent RAF (3)!");
+          });
+
+          anchorController.resumeTracking();
+
+          session.requestAnimationFrame((time_4, frame_4) => {
+            debug("rAF 4");
+
+            t.step(() => {
+              assert_true(frame_4.trackedAnchors.has(createdAnchor),
+                          "Newly created anchor with resumed tracking must be in tracked anchors set on subsequent RAF (4)!");
+              assert_true(frame_4.getPose(createdAnchor.anchorSpace, localRefSpace) != null,
+                          "Newly created anchor with resumed tracking should have a pose!");
+            });
+
+            anchorController.stopTracking();
+
+            session.requestAnimationFrame((time_5, frame_5) => {
+              debug("rAF 5");
+
+              t.step(() => {
+                assert_false(frame_5.trackedAnchors.has(createdAnchor),
+                            "Newly created anchor with stopped tracking must not be in tracked anchors set on subsequent RAF (5)!");
+              });
+
+              session.dispatchEvent(watcherDone);
+            });
+          });
+        });
+      });
+    });
+  }); // session.requestReferenceSpace(...).then({...});
+
+  return eventPromise;
+};
+
+
+xr_session_promise_test(
+  "Ensures free-floating anchor state changes get propagated",
+  anchorCreatePauseTrackingResumeAndDelete, fakeDeviceInitParams,
+  'immersive-ar', sessionInit);
+
+</script>
diff --git a/testing/web-platform/tests/webxr/anchors/ar_anchor_getAnchors.https.html b/testing/web-platform/tests/webxr/anchors/ar_anchor_getAnchors.https.html
new file mode 100644
index 0000000000..50664b0a4b
--- /dev/null
+++ b/testing/web-platform/tests/webxr/anchors/ar_anchor_getAnchors.https.html
@@ -0,0 +1,58 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../resources/webxr_util.js"></script>
+<script src="../resources/webxr_test_asserts.js"></script>
+<script src="../resources/webxr_test_constants.js"></script>
+<script src="../resources/webxr_test_constants_fake_world.js"></script>
+
+<script>
+
+// 1m above world origin.
+const VIEWER_ORIGIN_TRANSFORM = {
+  position: [0, 1, 0],
+  orientation: [0, 0, 0, 1],
+};
+
+const fakeDeviceInitParams = {
+  supportedModes: ["immersive-ar"],
+  views: VALID_VIEWS,
+  supportedFeatures: ALL_FEATURES,
+  viewerOrigin: VIEWER_ORIGIN_TRANSFORM,
+};
+
+// Attempts to access XRFrame.trackedAnchors and expects to get empty set
+// since no anchors are being created.
+const testFunction = function(session, fakeDeviceController, t) {
+  const debug = xr_debug.bind(this, 'testGetAnchors');
+
+  let done = false;
+
+  session.requestReferenceSpace('local').then((localRefSpace) => {
+    const onFrame = function(time, frame) {
+      const trackedAnchors = frame.trackedAnchors;
+      t.step(() => {
+        assert_equals(trackedAnchors.size, 0);
+      });
+
+      done = true;
+    };
+
+    session.requestAnimationFrame(onFrame);
+  }); // session.requestReferenceSpace(...)
+
+  return t.step_wait(() => done);
+};  // testFunction
+
+
+xr_session_promise_test("XRFrame's trackedAnchors is empty when the feature was not requested",
+  testFunction,
+  fakeDeviceInitParams,
+  'immersive-ar', { });
+
+xr_session_promise_test("XRFrame's trackedAnchors is empty when the feature was requested",
+  testFunction,
+  fakeDeviceInitParams,
+  'immersive-ar', { 'requiredFeatures': ['anchors'] });
+
+</script>
diff --git a/testing/web-platform/tests/webxr/anchors/ar_anchor_states.https.html b/testing/web-platform/tests/webxr/anchors/ar_anchor_states.https.html
new file mode 100644
index 0000000000..8369549852
--- /dev/null
+++ b/testing/web-platform/tests/webxr/anchors/ar_anchor_states.https.html
@@ -0,0 +1,114 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../resources/webxr_util.js"></script>
+<script src="../resources/webxr_test_asserts.js"></script>
+<script src="../resources/webxr_test_constants.js"></script>
+<script src="../resources/webxr_test_constants_fake_world.js"></script>
+
+<script>
+
+// 1m above world origin.
+const VIEWER_ORIGIN_TRANSFORM = {
+  position: [0, 1, 0],
+  orientation: [0, 0, 0, 1],
+};
+
+const fakeDeviceInitParams = {
+  supportedModes: ["immersive-ar"],
+  views: VALID_VIEWS,
+  supportedFeatures: ALL_FEATURES,
+  viewerOrigin: VIEWER_ORIGIN_TRANSFORM,
+};
+
+// Creates a test method that leverages anchors API.
+// |expectSucceeded| - true if the anchors creation request is expected to succeed, false otherwise
+// |endSession| - true if the test case should call session.end() prior to creating an anchor
+// |expectedError| - expected error name that should be returned in case expectSucceeded is false
+const testFunctionGenerator = function(expectSucceeded, endSession, expectedError) {
+
+  const testFunction = function(session, fakeDeviceController, t) {
+
+    const debug = xr_debug.bind(this, 'testAnchorStates');
+
+    fakeDeviceController.setAnchorCreationCallback((parameters, controller) => {
+      // All anchor creation requests that reach this stage should be marked as successful.
+      // If this test is expected to fail, the failure will happen earlier in the anchor
+      // creation process.
+      return Promise.resolve(true);
+    });
+
+    const watcherDone = new Event("watcherdone");
+    const eventWatcher = new EventWatcher(t, session, ["watcherdone"]);
+    const eventPromise = eventWatcher.wait_for(["watcherdone"]);
+
+    session.requestReferenceSpace('local').then((localRefSpace) => {
+
+      const onFrame = function(time, frame) {
+        debug("rAF 1");
+
+        let setUpPromise = Promise.resolve();
+        if(endSession) {
+          debug("ending session");
+          setUpPromise = session.end();
+        }
+
+        setUpPromise.then(() => {
+          debug("creating anchor");
+          frame.createAnchor(new XRRigidTransform(), localRefSpace)
+            .then((anchor) => {
+              debug("anchor created");
+
+              t.step(() => {
+                assert_true(expectSucceeded,
+                  "`createAnchor` succeeded when it was expected to fail");
+              });
+
+              session.dispatchEvent(watcherDone);
+            }).catch((error) => {
+              debug("anchor creation failed");
+
+              t.step(() =>  {
+                assert_false(expectSucceeded,
+                  "`createAnchor` failed when it was expected to succeed, error: " + error);
+                assert_equals(error.name, expectedError,
+                  "`createAnchor` failed with unexpected error name");
+              });
+
+              session.dispatchEvent(watcherDone);
+            });
+
+          // Anchor result will only take effect with frame data - schedule
+          // a frame after we requested anchor creation, otherwise the test will time out.
+          session.requestAnimationFrame(() => {
+            debug("rAF 2");
+          });
+        }); // setUpPromise.then(() => { ... })
+      }; // onFrame() { ... }
+
+      debug("requesting animation frame");
+      session.requestAnimationFrame(onFrame);
+    }); // session.requestReferenceSpace(...)
+
+    return eventPromise;
+  };  // testFunction
+
+  return testFunction;
+};
+
+xr_session_promise_test("Anchor creation succeeds if the feature was requested",
+  testFunctionGenerator(/*expectSucceeded=*/true, /*endSession=*/false),
+  fakeDeviceInitParams,
+  'immersive-ar', { 'requiredFeatures': ['anchors'] });
+
+xr_session_promise_test("Anchor creation fails if the feature was not requested",
+  testFunctionGenerator(/*expectSucceeded=*/false, /*endSession=*/false, "NotSupportedError"),
+  fakeDeviceInitParams,
+  'immersive-ar', {});
+
+xr_session_promise_test("Anchor creation fails if the feature was requested but the session already ended",
+  testFunctionGenerator(/*expectSucceeded=*/false, /*endSession=*/true, "InvalidStateError"),
+  fakeDeviceInitParams,
+  'immersive-ar', { 'requiredFeatures': ['anchors'] });
+
+</script>
diff --git a/testing/web-platform/tests/webxr/anchors/idlharness.https.window.js b/testing/web-platform/tests/webxr/anchors/idlharness.https.window.js
new file mode 100644
index 0000000000..b69a327229
--- /dev/null
+++ b/testing/web-platform/tests/webxr/anchors/idlharness.https.window.js
@@ -0,0 +1,16 @@
+// META: script=/resources/WebIDLParser.js
+// META: script=/resources/idlharness.js
+
+'use strict';
+
+// https://immersive-web.github.io/anchors/
+
+idl_test(
+  ['anchors'],
+  ['webxr-hit-test', 'webxr', 'dom'],
+  async idl_array => {
+    idl_array.add_objects({
+      // TODO: Add object instances
+    });
+  }
+);
-- 
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