From a34fd9ac89c3ebd294f57d4b471fb6f5b31e1e91 Mon Sep 17 00:00:00 2001
From: Thomas Erker <35792856+th-erker@users.noreply.github.com>
Date: Thu, 8 Mar 2018 11:25:36 +0000
Subject: [PATCH 1/3] Add testcase for #1751

---
 tests/document/class_methods.py | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/tests/document/class_methods.py b/tests/document/class_methods.py
index dd3addb7..8701b4b2 100644
--- a/tests/document/class_methods.py
+++ b/tests/document/class_methods.py
@@ -187,6 +187,19 @@ class ClassMethodsTest(unittest.TestCase):
         self.assertEqual(BlogPostWithTags.compare_indexes(), { 'missing': [], 'extra': [] })
         self.assertEqual(BlogPostWithCustomField.compare_indexes(), { 'missing': [], 'extra': [] })
 
+    def test_compare_indexes_for_text_indexes(self):
+        """ Ensure that compare_indexes behaves correctly for text indexes """
+
+        class Doc(Document):
+            a = StringField()
+            meta = { 'indexes': ['$a']}
+
+        Doc.drop_collection()
+        Doc.ensure_indexes()
+        actual = Doc.compare_indexes()
+        expected = {'missing': [], 'extra': []}
+        self.assertEqual(actual, expected)
+
     def test_list_indexes_inheritance(self):
         """ ensure that all of the indexes are listed regardless of the super-
         or sub-class that we call it from

From 08b64338439a33a1b869ef0c77f09fd9b50bae2c Mon Sep 17 00:00:00 2001
From: Erdenezul Batmunkh <erdenezul.b@gmail.com>
Date: Sun, 20 May 2018 11:03:13 +0800
Subject: [PATCH 2/3] fix compare_indexes for text indexes #1751

---
 mongoengine/document.py         | 12 ++++++++++--
 tests/document/class_methods.py |  8 +++++++-
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/mongoengine/document.py b/mongoengine/document.py
index c948dac2..18c52d9d 100644
--- a/mongoengine/document.py
+++ b/mongoengine/document.py
@@ -967,8 +967,16 @@ class Document(BaseDocument):
         """
 
         required = cls.list_indexes()
-        existing = [info['key']
-                    for info in cls._get_collection().index_information().values()]
+
+        existing = []
+        for info in cls._get_collection().index_information().values():
+            if '_fts' in info['key'][0]:
+                index_type = info['key'][0][1]
+                text_index_fields = info.get('weights').keys()
+                existing.append(
+                    [(key, index_type) for key in text_index_fields])
+            else:
+                existing.append(info['key'])
         missing = [index for index in required if index not in existing]
         extra = [index for index in existing if index not in required]
 
diff --git a/tests/document/class_methods.py b/tests/document/class_methods.py
index 8701b4b2..3f052d45 100644
--- a/tests/document/class_methods.py
+++ b/tests/document/class_methods.py
@@ -192,7 +192,13 @@ class ClassMethodsTest(unittest.TestCase):
 
         class Doc(Document):
             a = StringField()
-            meta = { 'indexes': ['$a']}
+            b = StringField()
+            meta = {'indexes': [
+                {'fields': ['$a', "$b"],
+                 'default_language': 'english',
+                 'weights': {'a': 10, 'b': 2}
+                }
+            ]}
 
         Doc.drop_collection()
         Doc.ensure_indexes()

From e50d66b3032df29331f72f6ce238b3813ae35b50 Mon Sep 17 00:00:00 2001
From: Erdenezul Batmunkh <erdenezul.b@gmail.com>
Date: Sun, 20 May 2018 11:26:30 +0800
Subject: [PATCH 3/3] skip mongodb 2.4

---
 tests/document/class_methods.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/document/class_methods.py b/tests/document/class_methods.py
index 3f052d45..2fab1f72 100644
--- a/tests/document/class_methods.py
+++ b/tests/document/class_methods.py
@@ -5,6 +5,7 @@ from mongoengine import *
 
 from mongoengine.queryset import NULLIFY, PULL
 from mongoengine.connection import get_db
+from tests.utils import needs_mongodb_v26
 
 __all__ = ("ClassMethodsTest", )
 
@@ -187,6 +188,7 @@ class ClassMethodsTest(unittest.TestCase):
         self.assertEqual(BlogPostWithTags.compare_indexes(), { 'missing': [], 'extra': [] })
         self.assertEqual(BlogPostWithCustomField.compare_indexes(), { 'missing': [], 'extra': [] })
 
+    @needs_mongodb_v26
     def test_compare_indexes_for_text_indexes(self):
         """ Ensure that compare_indexes behaves correctly for text indexes """