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path: root/toolkit/components/telemetry/tests/unit/test_TelemetryControllerBuildID.js
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/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/
*/
/* Test inclusion of previous build ID in telemetry pings when build ID changes.
 * bug 841028
 *
 * Cases to cover:
 * 1) Run with no "previousBuildID" stored in prefs:
 *     -> no previousBuildID in telemetry system info, new value set in prefs.
 * 2) previousBuildID in prefs, equal to current build ID:
 *     -> no previousBuildID in telemetry, prefs not updated.
 * 3) previousBuildID in prefs, not equal to current build ID:
 *     -> previousBuildID in telemetry, new value set in prefs.
 */

"use strict";

Cu.import("resource://gre/modules/Services.jsm", this);
Cu.import("resource://gre/modules/TelemetryController.jsm", this);
Cu.import("resource://gre/modules/TelemetrySession.jsm", this);
Cu.import("resource://gre/modules/XPCOMUtils.jsm");

// Force the Telemetry enabled preference so that TelemetrySession.testReset() doesn't exit early.
Services.prefs.setBoolPref(PREF_TELEMETRY_ENABLED, true);

// Set up our dummy AppInfo object so we can control the appBuildID.
Cu.import("resource://testing-common/AppInfo.jsm", this);
updateAppInfo();

// Check that when run with no previous build ID stored, we update the pref but do not
// put anything into the metadata.
add_task(function* test_firstRun() {
  yield TelemetryController.testReset();
  let metadata = TelemetrySession.getMetadata();
  do_check_false("previousBuildID" in metadata);
  let appBuildID = getAppInfo().appBuildID;
  let buildIDPref = Services.prefs.getCharPref(TelemetrySession.Constants.PREF_PREVIOUS_BUILDID);
  do_check_eq(appBuildID, buildIDPref);
});

// Check that a subsequent run with the same build ID does not put prev build ID in
// metadata. Assumes testFirstRun() has already been called to set the previousBuildID pref.
add_task(function* test_secondRun() {
  yield TelemetryController.testReset();
  let metadata = TelemetrySession.getMetadata();
  do_check_false("previousBuildID" in metadata);
});

// Set up telemetry with a different app build ID and check that the old build ID
// is returned in the metadata and the pref is updated to the new build ID.
// Assumes testFirstRun() has been called to set the previousBuildID pref.
const NEW_BUILD_ID = "20130314";
add_task(function* test_newBuild() {
  let info = getAppInfo();
  let oldBuildID = info.appBuildID;
  info.appBuildID = NEW_BUILD_ID;
  yield TelemetryController.testReset();
  let metadata = TelemetrySession.getMetadata();
  do_check_eq(metadata.previousBuildId, oldBuildID);
  let buildIDPref = Services.prefs.getCharPref(TelemetrySession.Constants.PREF_PREVIOUS_BUILDID);
  do_check_eq(NEW_BUILD_ID, buildIDPref);
});


function run_test() {
  // Make sure we have a profile directory.
  do_get_profile();

  run_next_test();
}