MongoStore.groupby: add tests for sort, skip, limit

tests/stores/test_mongolike.py

@@ -70,11 +70,21 @@ def test_mongostore_connect_reconnect():
 
 def test_mongostore_query(mongostore):
     mongostore._collection.insert_one({"a": 1, "b": 2, "c": 3})
+    mongostore._collection.insert_one({"a": 2, "b": 2, "c": 3})
+    mongostore._collection.insert_one({"a": 4, "b": 5, "e": 6, "g": {"h": 1}})
     assert mongostore.query_one(properties=["a"])["a"] == 1
     assert mongostore.query_one(properties=["a"])["a"] == 1
     assert mongostore.query_one(properties=["b"])["b"] == 2
     assert mongostore.query_one(properties=["c"])["c"] == 3
 
+    # the whole document should be returned when properties=None
+    assert all([d.get('a') for d in mongostore.query()])
+    assert all([d.get('b') for d in mongostore.query()])
+
+    # test sort, skip, limit
+    assert len(list(mongostore.query(limit=2))) == 2
+    assert len(list(mongostore.query(skip=1))) == 2
+    assert list(mongostore.query(sort={"g": -1}))[0].get('e') 
 
 def test_mongostore_count(mongostore):
     mongostore._collection.insert_one({"a": 1, "b": 2, "c": 3})