Hello1
"; const URL2 = "data:text/html;charset=utf-8,Hello2
"; async function getBFCacheComboTelemetry(probeInParent) { let bfcacheCombo; await TestUtils.waitForCondition(() => { let histograms; if (probeInParent) { histograms = Services.telemetry.getSnapshotForHistograms( "main", false /* clear */ ).parent; } else { histograms = Services.telemetry.getSnapshotForHistograms( "main", false /* clear */ ).content; } bfcacheCombo = histograms.BFCACHE_COMBO; return bfcacheCombo; }); return bfcacheCombo; } async function test_bfcache_telemetry(probeInParent) { Services.telemetry.getHistogramById("BFCACHE_COMBO").clear(); let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, URL1); BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, URL2); await BrowserTestUtils.browserLoaded(tab.linkedBrowser); let bfcacheCombo = await getBFCacheComboTelemetry(probeInParent); is(bfcacheCombo.values[0], 1, "1 bfcache success"); gBrowser.removeTab(tab); } add_task(async () => { await test_bfcache_telemetry( Services.prefs.getBoolPref("fission.bfcacheInParent") ); });