netwerk/test/TestDiskCache.js

   1 var DEBUG = false;
   2
   3 var clientID = "javascript";
   4 var key = "theme:button";
   5 var nsICache = Components.interfaces.nsICache;
   6
   7 function getCacheService()
   8 {
   9     var nsCacheService = Components.classes["@mozilla.org/network/cache-service;1"];
  10     var service = nsCacheService.getService(Components.interfaces.nsICacheService);
  11     return service;
  12 }
  13
  14 function createCacheSession(clientID, storagePolicy, streamable)
  15 {
  16     var service = getCacheService();
  17     var session = service.createSession(clientID, storagePolicy, streamable);
  18     return session;
  19 }
  20
  21 function openCacheEntry(mode)
  22 {
  23     var session = createCacheSession(clientID, nsICache.STORE_ON_DISK, true);
  24     var entry = session.openCacheEntry(key, mode);
  25     return entry;
  26 }
  27
  28 function dumpLeaks()
  29 {
  30     var leakDetector = Components.classes["@mozilla.org/xpcom/leakdetector;1"].getService(Components.interfaces.nsILeakDetector);
  31     leakDetector.dumpLeaks();
  32 }
  33
  34 function wrapInputStream(input)
  35 {
  36     var nsIScriptableInputStream = Components.interfaces.nsIScriptableInputStream;
  37     var factory = Components.classes["@mozilla.org/scriptableinputstream;1"];
  38     var wrapper = factory.createInstance(nsIScriptableInputStream);
  39     wrapper.init(input);
  40     return wrapper;
  41 }
  42
  43 function test()
  44 {
  45     var outputEntry = openCacheEntry(nsICache.ACCESS_WRITE);
  46     var output = outputEntry.transport.openOutputStream(0, -1, 0);
  47     if (output.write("foo", 3) == 3)
  48         print("disk cache write works!");
  49     else
  50         print("disk cache write broken!");
  51
  52     // store some metadata.
  53     outputEntry.setMetaDataElement("size", "3");
  54
  55     output.close();
  56     outputEntry.markValid();
  57     outputEntry.close();
  58
  59     var inputEntry = openCacheEntry(nsICache.ACCESS_READ);
  60     var input = wrapInputStream(inputEntry.transport.openInputStream(0, -1, 0));
  61
  62     if (input.read(input.available()) == "foo")
  63         print("disk cache read works!");
  64     else
  65         print("disk cache read broken!");
  66
  67     if (inputEntry.getMetaDataElement("size") == "3")
  68         print("disk cache metadata works!");
  69     else
  70         print("disk cache metadata broken!");
  71
  72     input.close();
  73     inputEntry.close();
  74 }
  75
  76 function doom()
  77 {
  78     var doomedEntry = openCacheEntry(nsICache.ACCESS_READ_WRITE);
  79     doomedEntry.doom();
  80     doomedEntry.close();
  81 }
  82
  83 if (DEBUG) {
  84     getCacheService();
  85     print("cache service loaded.");
  86 } else {
  87     print("running disk cache test.");
  88     test();
  89     print("disk cache test complete.");
  90 }