/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

add_setup(() => {
  // FOG needs to be initialized in order for data to flow.
  Services.fog.initializeFOG();
  Services.telemetry.clearScalars();
});

/**
 * Tests that calling `BackupService.takeMeasurements` will call the measure
 * method of all registered BackupResource classes.
 */
add_task(async function test_takeMeasurements() {
  let sandbox = sinon.createSandbox();
  sandbox.stub(FakeBackupResource1.prototype, "measure").resolves();
  sandbox
    .stub(FakeBackupResource2.prototype, "measure")
    .rejects(new Error("Some failure to measure"));

  let bs = new BackupService({ FakeBackupResource1, FakeBackupResource2 });
  await bs.takeMeasurements();

  for (let backupResourceClass of [FakeBackupResource1, FakeBackupResource2]) {
    Assert.ok(
      backupResourceClass.prototype.measure.calledOnce,
      "Measure was called"
    );
    Assert.ok(
      backupResourceClass.prototype.measure.calledWith(PathUtils.profileDir),
      "Measure was called with the profile directory argument"
    );
  }

  sandbox.restore();
});

/**
 * Tests that we can measure the disk space available in the profile directory.
 */
add_task(async function test_profDDiskSpace() {
  let bs = new BackupService();
  await bs.takeMeasurements();
  let measurement = Glean.browserBackup.profDDiskSpace.testGetValue();
  TelemetryTestUtils.assertScalar(
    TelemetryTestUtils.getProcessScalars("parent", false, true),
    "browser.backup.prof_d_disk_space",
    measurement
  );

  Assert.greater(
    measurement,
    0,
    "Should have collected a measurement for the profile directory storage " +
      "device"
  );
});