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"use strict";
var {OS: {File, Path, Constants}} = Components.utils.import("resource://gre/modules/osfile.jsm", {});
var {Services} = Components.utils.import("resource://gre/modules/Services.jsm", {});
// Ensure that we have a profile but that the OS.File worker is not launched
add_task(function* init() {
do_get_profile();
yield File.resetWorker();
});
function getCount(histogram) {
if (histogram == null) {
return 0;
}
let total = 0;
for (let i of histogram.counts) {
total += i;
}
return total;
}
// Ensure that launching the OS.File worker adds data to the relevant
// histograms
add_task(function* test_startup() {
let LAUNCH = "OSFILE_WORKER_LAUNCH_MS";
let READY = "OSFILE_WORKER_READY_MS";
let before = Services.telemetry.histogramSnapshots;
// Launch the OS.File worker
yield File.getCurrentDirectory();
let after = Services.telemetry.histogramSnapshots;
do_print("Ensuring that we have recorded measures for histograms");
do_check_eq(getCount(after[LAUNCH]), getCount(before[LAUNCH]) + 1);
do_check_eq(getCount(after[READY]), getCount(before[READY]) + 1);
do_print("Ensuring that launh <= ready");
do_check_true(after[LAUNCH].sum <= after[READY].sum);
});
// Ensure that calling writeAtomic adds data to the relevant histograms
add_task(function* test_writeAtomic() {
let LABEL = "OSFILE_WRITEATOMIC_JANK_MS";
let before = Services.telemetry.histogramSnapshots;
// Perform a write.
let path = Path.join(Constants.Path.profileDir, "test_osfile_telemetry.tmp");
yield File.writeAtomic(path, LABEL, { tmpPath: path + ".tmp" } );
let after = Services.telemetry.histogramSnapshots;
do_check_eq(getCount(after[LABEL]), getCount(before[LABEL]) + 1);
});
function run_test() {
run_next_test();
}
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