From bfd7ecdd3b5841f92a1f654fa83bfa5a536645c4 Mon Sep 17 00:00:00 2001
From: lonsenluo <lonsen@gmail.com>
Date: Tue, 14 Feb 2017 00:26:31 +0800
Subject: [PATCH] [mongoose] add unwind method with new params type

In mongodb 3.2, the unwind operator can with a object params.
---
 mongoose/mongoose-tests.ts | 36 +++++++++++++++++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

diff --git a/mongoose/mongoose-tests.ts b/mongoose/mongoose-tests.ts
index c6dfe20fdc..dc170dccd9 100644
--- a/mongoose/mongoose-tests.ts
+++ b/mongoose/mongoose-tests.ts
@@ -1016,7 +1016,41 @@ aggregate.sort('field -test');
 aggregate.then(cb).catch(cb);
 aggregate.unwind("tags").unwind('tags');
 aggregate.unwind("a", "b", "c").unwind('tag1', 'tag2');
-
+aggregate.unwind(
+  {
+    path: "tags",
+    includeArrayIndex: "idx",
+    preserveNullAndEmptyArrays: true
+  })
+  .unwind({
+    path: "tags",
+    includeArrayIndex: "idx",
+    preserveNullAndEmptyArrays: true
+  });
+aggregate.unwind(
+  {
+    path: "a",
+    includeArrayIndex: "idx",
+    preserveNullAndEmptyArrays: true
+  }, {
+    path: "b",
+    includeArrayIndex: "idx",
+    preserveNullAndEmptyArrays: true
+  }, {
+    path: "c",
+    includeArrayIndex: "idx",
+    preserveNullAndEmptyArrays: true
+  })
+  .unwind({
+    path: "tag1",
+    includeArrayIndex: "idx",
+    preserveNullAndEmptyArrays: true
+  }, {
+    path: "tag2",
+    includeArrayIndex: "idx",
+    preserveNullAndEmptyArrays: true
+  });
+  
 /*
  * section schematype.js
  * http://mongoosejs.com/docs/api.html#schematype-js