storage/test/unit/test_telemetry_vfs.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

/* Any copyright is dedicated to the Public Domain.
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

// Make sure that there are telemetry entries created by sqlite io

function run_sql(d, sql) {
  var stmt = d.createStatement(sql);
  stmt.execute();
  stmt.finalize();
}

function new_file(name) {
  var file = Services.dirsvc.get("ProfD", Ci.nsIFile);
  file.append(name);
  return file;
}
function run_test() {
  let read_hgram = Services.telemetry.getHistogramById(
    "MOZ_SQLITE_OTHER_READ_B"
  );
  let old_sum = read_hgram.snapshot().sum;
  const file = new_file("telemetry.sqlite");
  var d = getDatabase(file);
  run_sql(d, "CREATE TABLE bloat(data varchar)");
  run_sql(d, "DROP TABLE bloat");
  Assert.ok(read_hgram.snapshot().sum > old_sum);
}