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"use strict";
var {
OS: { File, Path, Constants },
} = ChromeUtils.import("resource://gre/modules/osfile.jsm");
// Ensure that we have a profile but that the OS.File worker is not launched
add_task(async function init() {
do_get_profile();
await File.resetWorker();
});
function getCount(histogram) {
if (histogram == null) {
return 0;
}
let total = 0;
for (let i of Object.values(histogram.values)) {
total += i;
}
return total;
}
// Ensure that launching the OS.File worker adds data to the relevant
// histograms
add_task(async function test_startup() {
let LAUNCH = "OSFILE_WORKER_LAUNCH_MS";
let READY = "OSFILE_WORKER_READY_MS";
let before = Services.telemetry.getSnapshotForHistograms("main", false)
.parent;
// Launch the OS.File worker
await File.getCurrentDirectory();
let after = Services.telemetry.getSnapshotForHistograms("main", false).parent;
info("Ensuring that we have recorded measures for histograms");
Assert.equal(getCount(after[LAUNCH]), getCount(before[LAUNCH]) + 1);
Assert.equal(getCount(after[READY]), getCount(before[READY]) + 1);
info("Ensuring that launh <= ready");
Assert.ok(after[LAUNCH].sum <= after[READY].sum);
});
// Ensure that calling writeAtomic adds data to the relevant histograms
add_task(async function test_writeAtomic() {
let LABEL = "OSFILE_WRITEATOMIC_JANK_MS";
let before = Services.telemetry.getSnapshotForHistograms("main", false)
.parent;
// Perform a write.
let path = Path.join(Constants.Path.profileDir, "test_osfile_telemetry.tmp");
await File.writeAtomic(path, LABEL, { tmpPath: path + ".tmp" });
let after = Services.telemetry.getSnapshotForHistograms("main", false).parent;
Assert.equal(getCount(after[LABEL]), getCount(before[LABEL]) + 1);
});
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