Reorder skiped test and remove toString in regex.

Author: WaVEV

django_mongodb/features.py

@@ -8,7 +8,6 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     supports_date_lookup_using_string = False
     supports_foreign_keys = False
     supports_ignore_conflicts = False
-    supports_json_field = True
     supports_json_field_contains = False
     has_native_json_field = True
     # BSON Date type doesn't support microsecond precision.
@@ -250,10 +249,9 @@ def django_test_expected_failures(self):
             "expressions.tests.NegatedExpressionTests.test_filter",
             "expressions_case.tests.CaseExpressionTests.test_annotate_values_not_in_order_by",
             "expressions_case.tests.CaseExpressionTests.test_order_by_conditional_implicit",
+            "model_fields.test_jsonfield.TestQuerying.test_ordering_grouping_by_count",
             # annotate().filter().count() gives incorrect results.
             "db_functions.datetime.test_extract_trunc.DateFunctionTests.test_extract_year_exact_lookup",
-            # FieldDoesNotExist with ordering.
-            "model_fields.test_jsonfield.TestQuerying.test_ordering_grouping_by_count",
         },
         "Count doesn't work in QuerySet.annotate()": {
             "annotations.tests.AliasTests.test_alias_annotate_with_aggregation",