2 files changed, 84 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webxr/layers/META.yml b/testing/web-platform/tests/webxr/layers/META.yml
new file mode 100644
index 0000000000..117c1adf02
--- /dev/null
+++ b/testing/web-platform/tests/webxr/layers/META.yml
@@ -0,0 +1 @@
+spec: https://immersive-web.github.io/layers/
diff --git a/testing/web-platform/tests/webxr/layers/xrWebGLBinding_constructor.https.html b/testing/web-platform/tests/webxr/layers/xrWebGLBinding_constructor.https.html
new file mode 100644
index 0000000000..b3457cf320
--- /dev/null
+++ b/testing/web-platform/tests/webxr/layers/xrWebGLBinding_constructor.https.html
@@ -0,0 +1,83 @@
+<!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_constants.js"></script>
+
+<script>
+
+function testConstructor(t, gl) {
+  return navigator.xr.test.simulateDeviceConnection(TRACKED_IMMERSIVE_DEVICE)
+    .then(() => {
+      return navigator.xr.requestSession('inline')
+        .then((session) => {
+          try {
+            let webglLayerIncompatible = new XRWebGLBinding(session, gl);
+            assert_unreached("XRWebGLBinding should fail when created with an inline session.");
+          } catch (err) {
+            assert_equals(err.name, "InvalidStateError", "Should get InvalidStateError for creating with inline session.");
+          }
+        });
+    })
+    .then(() => {
+      return new Promise((resolve) => {
+        navigator.xr.test.simulateUserActivation(() => {
+          let xrSession = null;
+          navigator.xr.requestSession('immersive-vr')
+          .then((session) => {
+            xrSession = session;
+            t.step_func(() => {
+              try {
+                let webglLayerIncompatible = new XRWebGLBinding(xrSession, gl);
+                assert_unreached("XRWebGLBinding should fail when created with a context that is not XRCompatible.")
+              } catch (err) {
+                assert_equals(err.name, "InvalidStateError", "Should get InvalidStateError for non-XRCompatible context.");
+              }
+            })
+
+            return gl.makeXRCompatible();
+          }).then(() => {
+            try {
+              let webglLayerGood = new XRWebGLBinding(xrSession, gl);
+            } catch (err) {
+              reject("XRWebGLBinding should not fail with valid arguments.");
+            }
+
+            let lose_context_ext = gl.getExtension('WEBGL_lose_context');
+
+            gl.canvas.addEventListener('webglcontextlost', (ev) => {
+              ev.preventDefault();
+
+              try {
+                let webglLayerBadContext = new XRWebGLBinding(xrSession, gl);
+                reject("XRWebGLBinding should fail when created with a lost context.");
+              } catch (err) {
+                assert_equals(err.name, 'InvalidStateError', "Should get InvalidStateError for lost context.");
+                t.step_timeout(() => { lose_context_ext.restoreContext(); }, 100);
+              }
+            });
+
+            gl.canvas.addEventListener('webglcontextrestored', (ev) => {
+              resolve(xrSession.end().then(() => {
+                try {
+                  let webglLayerBadSession = new XRWebGLBinding(xrSession, gl);
+                  assert_unreached("XRWebGLBinding should fail when created with an ended session.");
+                } catch (err) {
+                  assert_equals(err.name, 'InvalidStateError', "Should get InvalidStateError when passed an ended session.");
+                }
+              }));
+            });
+
+            lose_context_ext.loseContext();
+          });
+        });
+      });
+    });
+}
+xr_promise_test("Ensure that XRWebGLBinding's constructor throws appropriate errors using webgl",
+  testConstructor, null, 'webgl');
+
+xr_promise_test("Ensure that XRWebGLBinding's constructor throws appropriate errors using webgl2",
+  testConstructor, null, 'webgl2');
+
+</script>