1 files changed, 63 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_bug654926_test_seek.js b/netwerk/test/unit/test_bug654926_test_seek.js
new file mode 100644
index 0000000000..2916b03805
--- /dev/null
+++ b/netwerk/test/unit/test_bug654926_test_seek.js
@@ -0,0 +1,63 @@
+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_and_check(os, data, data.length);
+
+  os.close();
+  entry.close();
+
+  // try to open the entry for appending
+  asyncOpenCacheEntry("http://data/",
+                      "disk", Ci.nsICacheStorage.OPEN_NORMALLY, null,
+                      open_for_readwrite);
+}
+
+function open_for_readwrite(status, entry)
+{
+  do_check_eq(status, Cr.NS_OK);
+  var os = entry.openOutputStream(entry.dataSize);
+
+  // Opening the entry for appending data calls nsDiskCacheStreamIO::Seek()
+  // which initializes mFD. If no data is written then mBufDirty is false and
+  // mFD won't be closed in nsDiskCacheStreamIO::Flush().
+
+  os.close();
+  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();
+}