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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// This tests are for a sessionstore.js atomic backup.
// Each test will wait for a write to the Session Store
// before executing.
let tmp = {};
Cu.import("resource://gre/modules/osfile.jsm", tmp);
Cu.import("resource:///modules/sessionstore/SessionFile.jsm", tmp);
const {OS, SessionFile} = tmp;
const PREF_SS_INTERVAL = "browser.sessionstore.interval";
// Full paths for sessionstore.js and sessionstore.bak.
const path = OS.Path.join(OS.Constants.Path.profileDir, "sessionstore.js");
const backupPath = OS.Path.join(OS.Constants.Path.profileDir,
"sessionstore.bak");
// A text decoder.
let gDecoder = new TextDecoder();
// Global variables that contain sessionstore.js and sessionstore.bak data for
// comparison between tests.
let gSSData;
let gSSBakData;
add_task(function* testAfterFirstWrite() {
// Ensure sessionstore.bak is not created. We start with a clean
// profile so there was nothing to move to sessionstore.bak before
// initially writing sessionstore.js
let ssExists = yield OS.File.exists(path);
let ssBackupExists = yield OS.File.exists(backupPath);
ok(ssExists, "sessionstore.js should exist.");
ok(!ssBackupExists, "sessionstore.bak should not have been created, yet");
// Save sessionstore.js data to compare to the sessionstore.bak data in the
// next test.
let array = yield OS.File.read(path);
gSSData = gDecoder.decode(array);
// Manually move to the backup since the first write has already happened
// and a backup would not be triggered again.
yield OS.File.move(path, backupPath);
yield forceSaveState();
});
add_task(function* testReadBackup() {
// Ensure sessionstore.bak is finally created.
let ssExists = yield OS.File.exists(path);
let ssBackupExists = yield OS.File.exists(backupPath);
ok(ssExists, "sessionstore.js exists.");
ok(ssBackupExists, "sessionstore.bak should now be created.");
// Read sessionstore.bak data.
let array = yield OS.File.read(backupPath);
gSSBakData = gDecoder.decode(array);
// Make sure that the sessionstore.bak is identical to the last
// sessionstore.js.
is(gSSBakData, gSSData, "sessionstore.js is backed up correctly.");
// Read latest sessionstore.js.
array = yield OS.File.read(path);
gSSData = gDecoder.decode(array);
// Read sessionstore.js with SessionFile.read.
let ssDataRead = yield SessionFile.read();
is(ssDataRead, gSSData, "SessionFile.read read sessionstore.js correctly.");
// Remove sessionstore.js to test fallback onto sessionstore.bak.
yield OS.File.remove(path);
ssExists = yield OS.File.exists(path);
ok(!ssExists, "sessionstore.js should be removed now.");
// Read sessionstore.bak with SessionFile.read.
ssDataRead = yield SessionFile.read();
is(ssDataRead, gSSBakData,
"SessionFile.read read sessionstore.bak correctly.");
yield forceSaveState();
});
add_task(function* testBackupUnchanged() {
// Ensure sessionstore.bak is backed up only once.
// Read sessionstore.bak data.
let array = yield OS.File.read(backupPath);
let ssBakData = gDecoder.decode(array);
// Ensure the sessionstore.bak did not change.
is(ssBakData, gSSBakData, "sessionstore.bak is unchanged.");
});
add_task(function* cleanup() {
// Cleaning up after the test: removing the sessionstore.bak file.
yield OS.File.remove(backupPath);
});
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