Add the MultiTerms aggregation

Author: Telomeraz

elasticsearch_dsl/aggs.py

@@ -296,6 +296,10 @@ def result(self, search, data):
         return FieldBucketData(self, search, data)
 
 
+class MultiTerms(Bucket):
+    name = "multi_terms"
+
+
 # metric aggregations
 class TopHits(Agg):
     name = "top_hits"

tests/test_aggs.py

@@ -300,6 +300,18 @@ def test_variable_width_histogram_aggregation():
     assert {"variable_width_histogram": {"buckets": 2, "field": "price"}} == a.to_dict()
 
 
+def test_multi_terms_aggregation():
+    a = aggs.MultiTerms(terms=[{"field": "tags"}, {"field": "author.row"}])
+    assert {
+        "multi_terms": {
+            "terms": [
+                {"field": "tags"},
+                {"field": "author.row"},
+            ]
+        }
+    } == a.to_dict()
+
+
 def test_median_absolute_deviation_aggregation():
     a = aggs.MedianAbsoluteDeviation(field="rating")