test_cache2-44-clear-origin-context-evictor.js

Enable keyboard shortcuts

"use strict";

// Clearing the disk cache for one origin is served by two independent code

// paths: CacheFileIOManager::EvictByContextInternal() dooms the entries that

// still have an active handle, and CacheFileContextEvictor::EvictEntries()

// walks the index and filters everything else by origin. test_cache2-32 only

// ever reaches the first path, because its entries are still in the memory

// pools when the clear happens. Bug 1591362 was an inverted origin comparison

// in the second path, which deleted every entry except the ones that were

// meant to go.

//

// Restarting the cache leaves the entries on disk with no active handles, so

// the clear below is served entirely by the context evictor.

const ORIGIN = "http://example.net";

const SUBDOMAIN = "http://subdomain.example.net";

const OTHER = "http://foo.bar";

function openEntry(behavior, meta, data, url) {

  return new Promise(resolve => {

    asyncOpenCacheEntry(

      url,

      "disk",

      Ci.nsICacheStorage.OPEN_NORMALLY,

      null,

      new OpenCallback(behavior, meta, data, resolve)

);

});

add_task(async function test_clear_origin_through_context_evictor() {

  do_get_profile();

  Services.prefs.setIntPref(

    "browser.cache.disk.index.update_start_delay_ms",

);

  await openEntry(NEW | WAITFORWRITE, "e1m", "e1d", ORIGIN + "/a");

  await openEntry(NEW | WAITFORWRITE, "s1m", "s1d", SUBDOMAIN + "/a");

  await openEntry(NEW | WAITFORWRITE, "f1m", "f1d", OTHER + "/a");

  await restart_cache2();

  Assert.equal(await count_cache2_entry_files(), 3, "three entries on disk");

  let principal = Services.scriptSecurityManager.createContentPrincipal(

    Services.io.newURI(ORIGIN),

{}

);

  Services.cache2.clearOriginsByPrincipal(principal);

  await wait_for_context_eviction();

  Assert.equal(

    await count_cache2_entry_files(),

2,

    "the evictor deleted the file of the cleared origin and nothing else"

);

  await openEntry(NEW, "e1m", "e1d", ORIGIN + "/a");

  await openEntry(NORMAL, "s1m", "s1d", SUBDOMAIN + "/a");

  await openEntry(NORMAL, "f1m", "f1d", OTHER + "/a");

});