Handle NaN and inf floats in search query serializer

arkindex/documents/serializers/search.py

@@ -5,6 +5,7 @@ from arkindex.documents.serializers.elements import ElementLightSerializer
 from arkindex.documents.serializers.ml import TranscriptionSerializer
 from arkindex.project.serializer_fields import EnumField, SearchTermsField
 from arkindex.documents.date_parser import parse_date
+import math
 
 
 class SearchQuerySerializer(serializers.Serializer):
@@ -27,15 +28,25 @@ class SearchQuerySerializer(serializers.Serializer):
             raise serializers.ValidationError('Could not parse Date')
         return date[0]
 
+    def validate_score(self, value):
+        if not isinstance(value, float) or math.isinf(value) or math.isnan(value):
+            raise serializers.ValidationError('Score should be a valid decimal number between 0 and 1')
+        return value
+
+    def validate_date_gte(self, value):
+        if not value:
+            return
+        return self.parse_date(value).es_str()
+
+    def validate_date_lte(self, value):
+        if not value:
+            return
+        return self.parse_date(value).es_round_up()
+
     def validate(self, data):
+        data = super().validate(data)
         gte = data['date_gte']
         lt = data['date_lt']
-        if gte:
-            gte = self.parse_date(gte)
-            data['date_gte'] = gte.es_str()
-        if lt:
-            lt = self.parse_date(lt)
-            data['date_lt'] = lt.es_round_up()
         if gte and lt and gte > lt:
             raise serializers.ValidationError("Upper date must be greater than lower date")
         return data

arkindex/documents/tests/test_search_api.py

@@ -25,6 +25,8 @@ class TestSearchApi(FixtureAPITestCase):
             {'q': ' ', 'score': '0.7'},
             {'q': 'one', 'score': '1.01'},
             {'q': 'that', 'score': 'null'},
+            {'q': 'that', 'score': 'nan'},
+            {'q': 'that', 'score': 'inf'},
             {'q': 'one two', 'date_lte': '1450-'},
             {'q': 'one two', 'date_lte': '1450-02-30'},
             {'q': 'one', 'type': 'wrongtype'},