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"use strict";
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) {
Assert.equal(status, Cr.NS_OK);
var data = gen_1MiB();
var os = entry.openOutputStream(0, data.length);
// 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
Services.prefs.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) {
Assert.equal(status, Cr.NS_OK);
var os = entry.openOutputStream(entry.dataSize, -1);
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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