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var _PSvc;
function get_pref_service() {
if (_PSvc)
return _PSvc;
return _PSvc = Cc["@mozilla.org/preferences-service;1"].
getService(Ci.nsIPrefBranch);
}
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(status, entry)
{
do_check_eq(status, Cr.NS_OK);
var os = entry.openOutputStream(0);
var data = gen_1MiB();
// write 2MiB
var i;
for (i=0 ; i<2 ; i++)
write_and_check(os, data, data.length);
os.close();
entry.close();
// now change max_entry_size so that the existing entry is too big
get_pref_service().setIntPref("browser.cache.disk.max_entry_size", 1024);
// append to entry
asyncOpenCacheEntry("http://data/",
"disk", Ci.nsICacheStorage.OPEN_NORMALLY, null,
append_datafile);
}
function append_datafile(status, entry)
{
do_check_eq(status, Cr.NS_OK);
var os = entry.openOutputStream(entry.dataSize);
var data = gen_1MiB();
// append 1MiB
try {
write_and_check(os, data, data.length);
do_throw();
}
catch (ex) { }
// closing the ostream should fail in this case
try {
os.close();
do_throw();
}
catch (ex) { }
entry.close();
do_test_finished();
}
function run_test() {
do_get_profile();
// clear the cache
evict_cache_entries();
asyncOpenCacheEntry("http://data/",
"disk", Ci.nsICacheStorage.OPEN_NORMALLY, null,
write_datafile);
do_test_pending();
}
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