gecko-dev/dom/localstorage/test/unit/test_stringLength.js

72 строки
1.7 KiB
JavaScript

/**
* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/
*/
async function testSteps() {
const principal = getPrincipal("http://example.org");
const data = {};
data.key = "foobar";
data.secondKey = "foobaz";
data.value = {
length: 25637,
};
data.usage = data.key.length + data.value.length;
async function checkUsage(expectedUsage) {
info("Checking usage");
// This forces any pending changes to be flushed to disk. It also forces
// data to be reloaded from disk at next localStorage API call.
request = resetOrigin(principal);
await requestFinished(request);
request = getOriginUsage(principal);
await requestFinished(request);
is(request.result.usage, expectedUsage, "Correct usage");
}
info("Setting pref");
Services.prefs.setBoolPref("dom.storage.next_gen", true);
info("Stage 1 - Checking usage after profile installation");
info("Clearing");
let request = clear();
await requestFinished(request);
info("Installing package");
// The profile contains storage.sqlite and webappsstore.sqlite.
installPackage("stringLength_profile");
await checkUsage(0);
info("Stage 2 - Checking usage after archived data migration");
info("Opening database");
let storage = getLocalStorage(principal);
storage.open();
await checkUsage(data.usage);
info("Stage 3 - Checking usage after copying the value");
info("Adding a second copy of the value");
let value = storage.getItem(data.key);
storage.setItem(data.secondKey, value);
await checkUsage(2 * data.usage);
info("Stage 4 - Checking length of the copied value");
value = storage.getItem(data.secondKey);
ok(value.length === data.value.length, "Correct string length");
}