This is a testharness.js-based test.
[FAIL] GamepadPose interface: existence and properties of interface object
  assert_own_property: self does not have own property "GamepadPose" expected property "GamepadPose" missing
[FAIL] GamepadPose interface object length
  assert_own_property: self does not have own property "GamepadPose" expected property "GamepadPose" missing
[FAIL] GamepadPose interface object name
  assert_own_property: self does not have own property "GamepadPose" expected property "GamepadPose" missing
[FAIL] GamepadPose interface: existence and properties of interface prototype object
  assert_own_property: self does not have own property "GamepadPose" expected property "GamepadPose" missing
[FAIL] GamepadPose interface: existence and properties of interface prototype object's "constructor" property
  assert_own_property: self does not have own property "GamepadPose" expected property "GamepadPose" missing
[FAIL] GamepadPose interface: existence and properties of interface prototype object's @@unscopables property
  assert_own_property: self does not have own property "GamepadPose" expected property "GamepadPose" missing
[FAIL] GamepadPose interface: attribute hasOrientation
  assert_own_property: self does not have own property "GamepadPose" expected property "GamepadPose" missing
[FAIL] GamepadPose interface: attribute hasPosition
  assert_own_property: self does not have own property "GamepadPose" expected property "GamepadPose" missing
[FAIL] GamepadPose interface: attribute position
  assert_own_property: self does not have own property "GamepadPose" expected property "GamepadPose" missing
[FAIL] GamepadPose interface: attribute linearVelocity
  assert_own_property: self does not have own property "GamepadPose" expected property "GamepadPose" missing
[FAIL] GamepadPose interface: attribute linearAcceleration
  assert_own_property: self does not have own property "GamepadPose" expected property "GamepadPose" missing
[FAIL] GamepadPose interface: attribute orientation
  assert_own_property: self does not have own property "GamepadPose" expected property "GamepadPose" missing
[FAIL] GamepadPose interface: attribute angularVelocity
  assert_own_property: self does not have own property "GamepadPose" expected property "GamepadPose" missing
[FAIL] GamepadPose interface: attribute angularAcceleration
  assert_own_property: self does not have own property "GamepadPose" expected property "GamepadPose" missing
[FAIL] Gamepad interface: attribute hand
  assert_true: The prototype object must have a property "hand" expected true got false
[FAIL] Gamepad interface: attribute hapticActuators
  assert_true: The prototype object must have a property "hapticActuators" expected true got false
[FAIL] Gamepad interface: attribute pose
  assert_true: The prototype object must have a property "pose" expected true got false
[FAIL] GamepadHapticActuator interface: operation pulse(double, double)
  assert_own_property: interface prototype object missing non-static operation expected property "pulse" missing
Harness: the test ran to completion.