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const PREF_FREC_DECAY_RATE_DEF = 0.975;
/**
* Promises that the pages-rank-changed event has been seen.
*
* @returns {Promise} A promise which is resolved when the notification is seen.
*/
function promiseRankingChanged() {
return PlacesTestUtils.waitForNotification(
"pages-rank-changed",
() => true,
"places"
);
}
add_task(async function setup() {
Services.prefs.setCharPref(
"places.frecency.decayRate",
PREF_FREC_DECAY_RATE_DEF
);
});
add_task(async function test_frecency_decay() {
let unvisitedBookmarkFrecency = Services.prefs.getIntPref(
"places.frecency.unvisitedBookmarkBonus"
);
// Add a bookmark and check its frecency.
let url = "http://example.com/b";
let promiseOne = promiseRankingChanged();
await PlacesUtils.bookmarks.insert({
url,
parentGuid: PlacesUtils.bookmarks.unfiledGuid,
});
await promiseOne;
// Trigger DecayFrecency.
let promiseMany = promiseRankingChanged();
PlacesUtils.history
.QueryInterface(Ci.nsIObserver)
.observe(null, "idle-daily", "");
await promiseMany;
// Now check the new frecency is correct.
let newFrecency = await PlacesTestUtils.fieldInDB(url, "frecency");
Assert.equal(
newFrecency,
Math.round(unvisitedBookmarkFrecency * PREF_FREC_DECAY_RATE_DEF),
"Frecencies should match"
);
});
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