gecko-dev/netwerk/test/unit/test_bug654926.js

145 lines
3.5 KiB
JavaScript

const Cc = Components.classes;
const Ci = Components.interfaces;
const Cr = Components.results;
var _CSvc;
function get_cache_service() {
if (_CSvc)
return _CSvc;
return _CSvc = Cc["@mozilla.org/network/cache-service;1"].
getService(Ci.nsICacheService);
}
var _PSvc;
function get_pref_service() {
if (_PSvc)
return _PSvc;
return _PSvc = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
}
function get_ostream_for_entry(key, asFile, append, entryRef)
{
var cache = get_cache_service();
var session = cache.createSession(
"HTTP",
asFile ? Ci.nsICache.STORE_ON_DISK_AS_FILE
: Ci.nsICache.STORE_ON_DISK,
Ci.nsICache.STREAM_BASED);
var cacheEntry = session.openCacheEntry(
key,
append ? Ci.nsICache.ACCESS_READ_WRITE
: Ci.nsICache.ACCESS_WRITE,
true);
var oStream = cacheEntry.openOutputStream(append ? cacheEntry.dataSize : 0);
entryRef.value = cacheEntry;
return oStream;
}
function sync_with_cache_IO_thread(aFunc)
{
do_check_eq(sync_with_cache_IO_thread_cb.listener, null);
sync_with_cache_IO_thread_cb.listener = aFunc;
var cache = get_cache_service();
var session = cache.createSession(
"HTTP",
Ci.nsICache.STORE_ON_DISK,
Ci.nsICache.STREAM_BASED);
var cacheEntry = session.asyncOpenCacheEntry(
"nonexistententry",
Ci.nsICache.ACCESS_READ,
sync_with_cache_IO_thread_cb);
}
var sync_with_cache_IO_thread_cb = {
listener: null,
onCacheEntryAvailable: function oCEA(descriptor, accessGranted, status) {
do_check_eq(status, Cr.NS_ERROR_CACHE_KEY_NOT_FOUND);
cb = this.listener;
this.listener = null;
do_timeout(0, cb);
}
};
function gen_1MiB()
{
var i;
var data="x";
for (i=0 ; i < 20 ; i++)
data+=data;
return data;
}
function write_and_check(str, data, len)
{
var written = str.write(data, len);
if (written != len) {
do_throw("str.write has not written all data!\n" +
" Expected: " + len + "\n" +
" Actual: " + written + "\n");
}
}
function write_datafile()
{
var entry = {};
var oStr = get_ostream_for_entry("data", true, false, entry);
var data = gen_1MiB();
// max size in MB
var max_size = get_pref_service().
getIntPref("browser.cache.disk.max_entry_size") / 1024;
// write larger entry than is allowed
var i;
for (i=0 ; i<(max_size+1) ; i++)
write_and_check(oStr, data, data.length);
oStr.close();
entry.value.close();
// wait until writing is done, then append to entry
sync_with_cache_IO_thread(append_datafile);
}
function append_datafile()
{
var entry = {};
var oStr = get_ostream_for_entry("data", false, true, entry);
var data = gen_1MiB();
// append 1MiB
try {
write_and_check(oStr, data, data.length);
do_throw();
}
catch (ex) { }
// closing the ostream should fail in this case
try {
oStr.close();
do_throw();
}
catch (ex) { }
entry.value.close();
// wait until cache-operations have finished, then finish test
sync_with_cache_IO_thread(do_test_finished);
}
function run_test() {
do_get_profile();
// clear the cache
get_cache_service().evictEntries(Ci.nsICache.STORE_ANYWHERE);
// wait until clearing is done, then force to write file bigger than 5MiB
sync_with_cache_IO_thread(write_datafile);
do_test_pending();
}