diff --git a/test_elasticsearch/test_helpers.py b/test_elasticsearch/test_helpers.py
new file mode 100644
index 00000000..f62c76b8
--- /dev/null
+++ b/test_elasticsearch/test_helpers.py
@@ -0,0 +1,27 @@
+import mock
+import time
+import threading
+
+from elasticsearch import helpers, Elasticsearch
+
+from .test_cases import TestCase
+
+class TestParallelBulk(TestCase):
+    @mock.patch('elasticsearch.helpers._process_bulk_chunk', return_value=[])
+    def test_all_chunks_sent(self, _process_bulk_chunk):
+        actions = ({'x': i} for i in range(100))
+        list(helpers.parallel_bulk(Elasticsearch(), actions, chunk_size=2))
+
+        self.assertEquals(50, _process_bulk_chunk.call_count)
+
+    @mock.patch(
+        'elasticsearch.helpers._process_bulk_chunk',
+        # make sure we spend some time in the thread
+        side_effect=lambda *a: [(True, time.sleep(.001) or threading.get_ident())]
+    )
+    def test_chunk_sent_from_different_threads(self, _process_bulk_chunk):
+        actions = ({'x': i} for i in range(100))
+        results = list(helpers.parallel_bulk(Elasticsearch(), actions, thread_count=10, chunk_size=2))
+
+        self.assertTrue(len(set([r[1] for r in results])) > 1)
+