mozilla-release/testing/web-platform/tests/feature-policy/reporting/generic-sensor-report-only.https.html

<!DOCTYPE html>
<html>
  <head>
    <script src='/resources/testharness.js'></script>
    <script src='/resources/testharnessreport.js'></script>
  </head>
  <body>
    <script>
var sensor_features_verified = {
  "accelerometer": false,
  "ambient-light-sensor": false,
  "magnetometer": false,
  "gyroscope": false
};

var check_report_format = function(reports, observer) {
  // Check each report in this batch. This observer callback may be called
  // multiple times before all reports have been processed.
  for (const report of reports) {

    // Validate that the reported feature is one of the sensor features, and that
    // we have not seen a report for this feature before.
    assert_true(sensor_features_verified.hasOwnProperty(report.body.featureId));
    assert_false(sensor_features_verified[report.body.featureId]);

    // Validate the remainder of the report
    assert_equals(report.type, "feature-policy-violation");
    assert_equals(report.url, document.location.href);
    assert_equals(report.body.sourceFile, document.location.href);
    assert_equals(typeof report.body.lineNumber, "number");
    assert_equals(typeof report.body.columnNumber, "number");
    assert_equals(report.body.disposition, "report");

    sensor_features_verified[report.body.featureId] = true;
  }

  // Test is only done when reports for all features have been seen
  for (let result of Object.values(sensor_features_verified)) {
    if (!result)
      return;
  }
  this.done();
};

async_test(t => {
  new ReportingObserver(t.step_func(check_report_format),
                        {types: ['feature-policy-violation']}).observe();
  new Accelerometer();
  new AmbientLightSensor();
  new Gyroscope();
  new Magnetometer();
}, "Generic Sensor report only mode");
    </script>
  </body>
</html>