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const NS_PLACES_INIT_COMPLETE_TOPIC = "places-init-complete";
let gLockedConn;
add_task(async function setup() {
// Create a dummy places.sqlite and open an unshared connection on it
let db = Services.dirsvc.get("ProfD", Ci.nsIFile);
db.append("places.sqlite");
gLockedConn = Services.storage.openUnsharedDatabase(db);
Assert.ok(db.exists(), "The database should have been created");
// We need an exclusive lock on the db
gLockedConn.executeSimpleSQL("PRAGMA locking_mode = EXCLUSIVE");
// Exclusive locking is lazy applied, we need to make a write to activate it
gLockedConn.executeSimpleSQL("PRAGMA USER_VERSION = 1");
});
add_task(async function locked() {
// Try to create history service while the db is locked.
// It should be possible to create the service, but any method using the
// database will fail.
let resolved = false;
let promiseComplete = promiseTopicObserved(
NS_PLACES_INIT_COMPLETE_TOPIC
).then(() => (resolved = true));
let history = Cc["@mozilla.org/browser/nav-history-service;1"].createInstance(
Ci.nsINavHistoryService
);
// The notification shouldn't happen until something tries to use the database.
await new Promise(resolve => do_timeout(100, resolve));
Assert.equal(
resolved,
false,
"The notification should not have been fired yet"
);
// This will initialize the database.
Assert.equal(history.databaseStatus, history.DATABASE_STATUS_LOCKED);
await promiseComplete;
// Close our connection and try to cleanup the file (could fail on Windows)
gLockedConn.close();
let db = Services.dirsvc.get("ProfD", Ci.nsIFile);
db.append("places.sqlite");
if (db.exists()) {
try {
db.remove(false);
} catch (e) {
info("Unable to remove dummy places.sqlite");
}
}
});
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