Auto merge of #23641 - Manishearth:newtest, r=asajeffrey

Update to newest XRTest API

requires https://github.com/servo/rust-webvr/pull/88 and https://github.com/servo/servo/pull/23575

Incorporates changes from https://github.com/immersive-web/webxr-test-api/pull/10 (and various minor improvements on that, like https://github.com/immersive-web/webxr-test-api/pull/20). Test no longer relies on racy state setting functions.

We're nearing consensus on what the test API should look like, thought I'd implement the updated model so I can start poking at the tests.

Fixes https://github.com/servo/servo/issues/23634 by setting everything at initialization.

This is based on https://github.com/servo/servo/pull/23575, so we can't merge it yet.

r? @asajeffrey (only the last commit)

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7 files changed, 224 insertions, 163 deletions

diff --git a/components/script/dom/fakexrdevice.rs b/components/script/dom/fakexrdevice.rs
new file mode 100644
index 00000000000..070ba5fa89c
--- /dev/null
+++ b/components/script/dom/fakexrdevice.rs
@@ -0,0 +1,121 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use crate::dom::bindings::codegen::Bindings::FakeXRDeviceBinding::{
+    self, FakeXRDeviceMethods, FakeXRRigidTransformInit, FakeXRViewInit,
+};
+use crate::dom::bindings::codegen::Bindings::XRViewBinding::XREye;
+use crate::dom::bindings::error::{Error, Fallible};
+use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
+use crate::dom::bindings::root::DomRoot;
+use crate::dom::globalscope::GlobalScope;
+use dom_struct::dom_struct;
+use webvr_traits::{MockVRControlMsg, MockVRView, WebVRMsg};
+
+#[dom_struct]
+pub struct FakeXRDevice {
+    reflector: Reflector,
+}
+
+impl FakeXRDevice {
+    pub fn new_inherited() -> FakeXRDevice {
+        FakeXRDevice {
+            reflector: Reflector::new(),
+        }
+    }
+
+    pub fn new(global: &GlobalScope) -> DomRoot<FakeXRDevice> {
+        reflect_dom_object(
+            Box::new(FakeXRDevice::new_inherited()),
+            global,
+            FakeXRDeviceBinding::Wrap,
+        )
+    }
+
+    fn send_msg(&self, msg: MockVRControlMsg) {
+        self.global()
+            .as_window()
+            .webvr_thread()
+            .unwrap()
+            .send(WebVRMsg::MessageMockDisplay(msg))
+            .unwrap();
+    }
+}
+
+pub fn get_views(views: &[FakeXRViewInit]) -> Fallible<(MockVRView, MockVRView)> {
+    if views.len() != 2 {
+        return Err(Error::NotSupported);
+    }
+
+    let (left, right) = match (views[0].eye, views[1].eye) {
+        (XREye::Left, XREye::Right) => (&views[0], &views[1]),
+        (XREye::Right, XREye::Left) => (&views[1], &views[0]),
+        _ => return Err(Error::NotSupported),
+    };
+
+    if left.projectionMatrix.len() != 16 ||
+        right.projectionMatrix.len() != 16 ||
+        left.viewOffset.position.len() != 3 ||
+        right.viewOffset.position.len() != 3
+    {
+        return Err(Error::Type("Incorrectly sized array".into()));
+    }
+
+    let mut proj_l = [0.; 16];
+    let mut proj_r = [0.; 16];
+    let v: Vec<_> = left.projectionMatrix.iter().map(|x| **x).collect();
+    proj_l.copy_from_slice(&v);
+    let v: Vec<_> = right.projectionMatrix.iter().map(|x| **x).collect();
+    proj_r.copy_from_slice(&v);
+
+    let mut offset_l = [0.; 3];
+    let mut offset_r = [0.; 3];
+    let v: Vec<_> = left.viewOffset.position.iter().map(|x| **x).collect();
+    offset_l.copy_from_slice(&v);
+    let v: Vec<_> = right.viewOffset.position.iter().map(|x| **x).collect();
+    offset_r.copy_from_slice(&v);
+    let left = MockVRView {
+        projection: proj_l,
+        offset: offset_l,
+    };
+    let right = MockVRView {
+        projection: proj_r,
+        offset: offset_r,
+    };
+    Ok((left, right))
+}
+
+pub fn get_origin(origin: &FakeXRRigidTransformInit) -> Fallible<([f32; 3], [f32; 4])> {
+    if origin.position.len() != 3 || origin.orientation.len() != 4 {
+        return Err(Error::Type("Incorrectly sized array".into()));
+    }
+    let mut p = [0.; 3];
+    let mut o = [0.; 4];
+    let v: Vec<_> = origin.position.iter().map(|x| **x).collect();
+    p.copy_from_slice(&v[0..3]);
+    let v: Vec<_> = origin.orientation.iter().map(|x| **x).collect();
+    o.copy_from_slice(&v);
+
+    Ok((p, o))
+}
+
+impl FakeXRDeviceMethods for FakeXRDevice {
+    /// https://github.com/immersive-web/webxr-test-api/blob/master/explainer.md
+    fn SetViews(&self, views: Vec<FakeXRViewInit>) -> Fallible<()> {
+        let (left, right) = get_views(&views)?;
+        self.send_msg(MockVRControlMsg::SetViews(left, right));
+        Ok(())
+    }
+
+    /// https://github.com/immersive-web/webxr-test-api/blob/master/explainer.md
+    fn SetViewerOrigin(
+        &self,
+        origin: &FakeXRRigidTransformInit,
+        _emulated_position: bool,
+    ) -> Fallible<()> {
+        let (position, orientation) = get_origin(origin)?;
+        self.send_msg(MockVRControlMsg::SetViewerPose(position, orientation));
+        Ok(())
+    }
+}
diff --git a/components/script/dom/fakexrdevicecontroller.rs b/components/script/dom/fakexrdevicecontroller.rs
deleted file mode 100644
index a7ed2833716..00000000000
--- a/components/script/dom/fakexrdevicecontroller.rs
+++ /dev/null
@@ -1,104 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
-
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
-
-use crate::dom::bindings::codegen::Bindings::FakeXRDeviceControllerBinding::{
-    self, FakeXRDeviceControllerMethods, FakeXRRigidTransform, FakeXRViewInit,
-};
-use crate::dom::bindings::codegen::Bindings::XRViewBinding::XREye;
-use crate::dom::bindings::error::{Error, Fallible};
-use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
-use crate::dom::bindings::root::DomRoot;
-use crate::dom::globalscope::GlobalScope;
-use dom_struct::dom_struct;
-use webvr_traits::{MockVRControlMsg, WebVREyeParameters, WebVRMsg};
-
-#[dom_struct]
-pub struct FakeXRDeviceController {
-    reflector: Reflector,
-}
-
-impl FakeXRDeviceController {
-    pub fn new_inherited() -> FakeXRDeviceController {
-        FakeXRDeviceController {
-            reflector: Reflector::new(),
-        }
-    }
-
-    pub fn new(global: &GlobalScope) -> DomRoot<FakeXRDeviceController> {
-        reflect_dom_object(
-            Box::new(FakeXRDeviceController::new_inherited()),
-            global,
-            FakeXRDeviceControllerBinding::Wrap,
-        )
-    }
-
-    pub fn send_msg(&self, msg: MockVRControlMsg) {
-        self.global()
-            .as_window()
-            .webvr_thread()
-            .unwrap()
-            .send(WebVRMsg::MessageMockDisplay(msg))
-            .unwrap();
-    }
-}
-
-impl FakeXRDeviceControllerMethods for FakeXRDeviceController {
-    /// https://github.com/immersive-web/webxr-test-api/blob/master/explainer.md
-    fn SetViews(&self, views: Vec<FakeXRViewInit>) -> Fallible<()> {
-        if views.len() != 2 {
-            return Err(Error::NotSupported);
-        }
-
-        let (left, right) = match (views[0].eye, views[1].eye) {
-            (XREye::Left, XREye::Right) => (&views[0], &views[1]),
-            (XREye::Right, XREye::Left) => (&views[1], &views[0]),
-            _ => return Err(Error::NotSupported),
-        };
-
-        if left.projectionMatrix.len() != 16 ||
-            right.projectionMatrix.len() != 16 ||
-            left.viewOffset.position.len() != 3 ||
-            right.viewOffset.position.len() != 3
-        {
-            return Err(Error::Type("Incorrectly sized array".into()));
-        }
-
-        let mut proj_l = [0.; 16];
-        let mut proj_r = [0.; 16];
-        let v: Vec<_> = left.projectionMatrix.iter().map(|x| **x).collect();
-        proj_l.copy_from_slice(&v);
-        let v: Vec<_> = right.projectionMatrix.iter().map(|x| **x).collect();
-        proj_r.copy_from_slice(&v);
-
-        let mut params_l = WebVREyeParameters::default();
-        let mut params_r = WebVREyeParameters::default();
-        let v: Vec<_> = left.viewOffset.position.iter().map(|x| **x).collect();
-        params_l.offset.copy_from_slice(&v);
-        let v: Vec<_> = right.viewOffset.position.iter().map(|x| **x).collect();
-        params_r.offset.copy_from_slice(&v);
-
-        self.send_msg(MockVRControlMsg::SetProjectionMatrices(proj_l, proj_r));
-        self.send_msg(MockVRControlMsg::SetEyeParameters(params_l, params_r));
-        Ok(())
-    }
-
-    /// https://github.com/immersive-web/webxr-test-api/blob/master/explainer.md
-    fn SetViewerOrigin(&self, origin: &FakeXRRigidTransform) -> Fallible<()> {
-        if origin.position.len() != 4 || origin.orientation.len() != 4 {
-            return Err(Error::Type("Incorrectly sized array".into()));
-        }
-        let mut position = [0.; 3];
-        let mut orientation = [0.; 4];
-        let v: Vec<_> = origin.position.iter().map(|x| **x).collect();
-        position.copy_from_slice(&v[0..3]);
-        let v: Vec<_> = origin.orientation.iter().map(|x| **x).collect();
-        orientation.copy_from_slice(&v);
-        self.send_msg(MockVRControlMsg::SetViewerPose(position, orientation));
-        Ok(())
-    }
-}
diff --git a/components/script/dom/mod.rs b/components/script/dom/mod.rs
index 77729567558..d20b68c92b7 100644
--- a/components/script/dom/mod.rs
+++ b/components/script/dom/mod.rs
@@ -301,7 +301,7 @@ pub mod eventsource;
 pub mod eventtarget;
 pub mod extendableevent;
 pub mod extendablemessageevent;
-pub mod fakexrdevicecontroller;
+pub mod fakexrdevice;
 pub mod file;
 pub mod filelist;
 pub mod filereader;
diff --git a/components/script/dom/webidls/FakeXRDevice.webidl b/components/script/dom/webidls/FakeXRDevice.webidl
new file mode 100644
index 00000000000..5e310c4d75f
--- /dev/null
+++ b/components/script/dom/webidls/FakeXRDevice.webidl
@@ -0,0 +1,57 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+// https://github.com/immersive-web/webxr-test-api/
+
+[Exposed=Window, Pref="dom.webxr.test"]
+interface FakeXRDevice {
+  // Sets the values to be used for subsequent
+  // requestAnimationFrame() callbacks.
+  [Throws] void setViews(sequence<FakeXRViewInit> views);
+
+  // // behaves as if device was disconnected
+  // Promise<void> disconnect();
+
+  // Sets the origin of the viewer
+  [Throws] void setViewerOrigin(FakeXRRigidTransformInit origin, optional boolean emulatedPosition = false);
+
+  // // Simulates devices focusing and blurring sessions.
+  // void simulateVisibilityChange(XRVisibilityState);
+
+  // void setBoundsGeometry(sequence<FakeXRBoundsPoint> boundsCoodinates);
+  // // Sets eye level used for calculating floor-level spaces
+  // void setEyeLevel(float eyeLevel);
+
+
+  // Promise<FakeXRInputController>
+  //     simulateInputSourceConnection(FakeXRInputSourceInit);
+};
+
+// https://immersive-web.github.io/webxr/#dom-xrwebgllayer-getviewport
+dictionary FakeXRViewInit {
+  required XREye eye;
+  // https://immersive-web.github.io/webxr/#view-projection-matrix
+  required sequence<float> projectionMatrix;
+  // https://immersive-web.github.io/webxr/#view-offset
+  required FakeXRRigidTransformInit viewOffset;
+  // https://immersive-web.github.io/webxr/#dom-xrwebgllayer-getviewport
+  required FakeXRViewportInit viewport;
+};
+
+// https://immersive-web.github.io/webxr/#xrviewport
+dictionary FakeXRViewportInit {
+    required long x;
+    required long y;
+    required long width;
+    required long height;
+};
+
+dictionary FakeXRBoundsPoint {
+  double x; double z;
+};
+
+dictionary FakeXRRigidTransformInit {
+    required sequence<float> position;
+    required sequence<float> orientation;
+};
diff --git a/components/script/dom/webidls/FakeXRDeviceController.webidl b/components/script/dom/webidls/FakeXRDeviceController.webidl
deleted file mode 100644
index cacdb2f9819..00000000000
--- a/components/script/dom/webidls/FakeXRDeviceController.webidl
+++ /dev/null
@@ -1,49 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
-
-// https://github.com/immersive-web/webxr-test-api/
-
-[Exposed=Window, Pref="dom.webxr.test"]
-interface FakeXRDeviceController {
-  // Creates and attaches a XRFrameOfReference of the type specified to the device.
-  // void setFrameOfReference(XRFrameOfReferenceType,  FakeXRFrameOfReferenceInit);
-
-  // // Sets the values to be used for subsequent
-  // // requestAnimationFrame() callbacks.
-  [Throws] void setViews(sequence<FakeXRViewInit> views);
-
-  [Throws] void setViewerOrigin(FakeXRRigidTransform origin);
-
-  // Simulates the user activating the reset pose on a device.
-  // void simulateResetPose();
-
-  // Simulates the platform ending the sessions.
-  // void simulateForcedEndSessions();
-
-  // Simulates devices focusing and blurring sessions.
-  // void simulateBlurSession(XRSession);
-  // void simulateFocusSession(XRSession);
-
-  // void setBoundsGeometry(Array<FakeXRBoundsPoint> boundsCoodinates)l
-
-  // Promise<FakeXRInputSourceController>
-  //     simulateInputSourceConnection(FakeXRInputSourceInit);
-};
-
-dictionary FakeXRViewInit {
-  required XREye eye;
-  // https://immersive-web.github.io/webxr/#view-projection-matrix
-  required sequence<float> projectionMatrix;
-  // https://immersive-web.github.io/webxr/#view-offset
-  required FakeXRRigidTransform viewOffset;
-};
-
-dictionary FakeXRBoundsPoint {
-  double x; double z;
-};
-
-dictionary FakeXRRigidTransform {
-    required sequence<float> position;
-    required sequence<float> orientation;
-};
diff --git a/components/script/dom/webidls/XRTest.webidl b/components/script/dom/webidls/XRTest.webidl
index 30c485321d4..f74b9b82331 100644
--- a/components/script/dom/webidls/XRTest.webidl
+++ b/components/script/dom/webidls/XRTest.webidl
@@ -8,18 +8,28 @@
 interface XRTest {
   // Simulates connecting a device to the system.
   // Used to instantiate a fake device for use in tests.
-  Promise<FakeXRDeviceController> simulateDeviceConnection(FakeXRDeviceInit init);
-
-  // // Simulates a device being disconnected from the system.
-  // Promise<void> simulateDeviceDisconnection(XRDevice);
+  Promise<FakeXRDevice> simulateDeviceConnection(FakeXRDeviceInit init);
 
   // // Simulates a user activation (aka user gesture) for the current scope.
   // // The activation is only guaranteed to be valid in the provided function and only applies to WebXR
   // // Device API methods.
   // void simulateUserActivation(Function);
+
+  // // Disconnect all fake devices
+  // Promise<void> disconnectAllDevices();
 };
 
 dictionary FakeXRDeviceInit {
-    // TODO: Subject to change to match spec changes.
     required boolean supportsImmersive;
+    required sequence<FakeXRViewInit> views;
+
+    boolean supportsUnbounded = false;
+    // Whether the space supports tracking in inline sessions
+    boolean supportsTrackingInInline = true;
+    // The bounds coordinates. If null, bounded reference spaces are not supported.
+    sequence<FakeXRBoundsPoint> boundsCoodinates;
+    // Eye level used for calculating floor-level spaces
+    float eyeLevel = 1.5;
+    FakeXRRigidTransformInit viewerOrigin;
 };
+
diff --git a/components/script/dom/xrtest.rs b/components/script/dom/xrtest.rs
index 07fac9d6a89..6808ce262cd 100644
--- a/components/script/dom/xrtest.rs
+++ b/components/script/dom/xrtest.rs
@@ -11,13 +11,13 @@ use crate::dom::bindings::codegen::Bindings::XRTestBinding::{
 };
 use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
 use crate::dom::bindings::root::DomRoot;
-use crate::dom::fakexrdevicecontroller::FakeXRDeviceController;
+use crate::dom::fakexrdevice::{get_origin, get_views, FakeXRDevice};
 use crate::dom::globalscope::GlobalScope;
 use crate::dom::promise::Promise;
 use dom_struct::dom_struct;
 use std::cell::Cell;
 use std::rc::Rc;
-use webvr_traits::WebVRMsg;
+use webvr_traits::{MockVRInit, WebVRMsg};
 
 #[dom_struct]
 pub struct XRTest {
@@ -52,14 +52,40 @@ impl XRTestMethods for XRTest {
             return p;
         }
 
+        let origin = if let Some(ref o) = init.viewerOrigin {
+            match get_origin(&o) {
+                Ok(origin) => origin,
+                Err(e) => {
+                    p.reject_error(e);
+                    return p;
+                },
+            }
+        } else {
+            Default::default()
+        };
+
+        let views = match get_views(&init.views) {
+            Ok(views) => views,
+            Err(e) => {
+                p.reject_error(e);
+                return p;
+            },
+        };
+
+        let init = MockVRInit {
+            viewer_origin: Some(origin),
+            views: Some(views),
+            eye_level: None,
+        };
+
         self.session_started.set(true);
         self.global()
             .as_window()
             .webvr_thread()
             .unwrap()
-            .send(WebVRMsg::CreateMockDisplay)
+            .send(WebVRMsg::CreateMockDisplay(init))
             .unwrap();
-        p.resolve_native(&FakeXRDeviceController::new(&self.global()));
+        p.resolve_native(&FakeXRDevice::new(&self.global()));
 
         p
     }