update to Django 5.1

Author: timgraham

.github/workflows/test-python.yml

@@ -47,7 +47,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: 'mongodb-forks/django'
-          ref: 'mongodb-5.0.x'
+          ref: 'mongodb-5.1.x'
           path: 'django_repo'
       - name: Install system packages for Django's Python test dependencies
         run: |

django_mongodb/__init__.py

@@ -1,4 +1,4 @@
-__version__ = "5.0a0"
+__version__ = "5.1a0"
 
 # Check Django compatibility before other imports which may fail if the
 # wrong version of Django is installed.

django_mongodb/features.py

@@ -26,6 +26,8 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     uses_savepoints = False
 
     _django_test_expected_failures = {
+        # $concat only supports strings, not int
+        "db_functions.text.test_concat.ConcatTests.test_concat_non_str",
         # Database defaults not supported: bson.errors.InvalidDocument:
         # cannot encode object: <django.db.models.expressions.DatabaseDefault
         "basic.tests.ModelInstanceCreationTests.test_save_primary_with_db_default",
@@ -51,7 +53,7 @@ class DatabaseFeatures(BaseDatabaseFeatures):
         # Length of null considered zero rather than null.
         "db_functions.text.test_length.LengthTests.test_basic",
         # range lookup includes incorrect values.
-        "expressions.tests.IterableLookupInnerExpressionsTests.test_expressions_in_lookups_join_choice",
+        "expressions.tests.IterableLookupInnerExpressionsTests.test_expressions_range_lookups_join_choice",
         # Unexpected alias_refcount in alias_map.
         "queries.tests.Queries1Tests.test_order_by_tables",
         # The $sum aggregation returns 0 instead of None for null.
@@ -120,6 +122,8 @@ def django_test_expected_failures(self):
             "expressions.tests.BasicExpressionsTests.test_object_update_unsaved_objects",
             "expressions.tests.BasicExpressionsTests.test_order_of_operations",
             "expressions.tests.BasicExpressionsTests.test_parenthesis_priority",
+            "expressions.tests.BasicExpressionsTests.test_slicing_of_f_expressions_charfield",
+            "expressions.tests.BasicExpressionsTests.test_slicing_of_f_expressions_textfield",
             "expressions.tests.BasicExpressionsTests.test_update",
             "expressions.tests.BasicExpressionsTests.test_update_with_fk",
             "expressions.tests.BasicExpressionsTests.test_update_with_none",
@@ -216,6 +220,7 @@ def django_test_expected_failures(self):
             "expressions.tests.BasicExpressionsTests.test_case_in_filter_if_boolean_output_field",
             "expressions.tests.BasicExpressionsTests.test_exists_in_filter",
             "expressions.tests.BasicExpressionsTests.test_order_by_exists",
+            "expressions.tests.BasicExpressionsTests.test_slicing_of_outerref",
             "expressions.tests.BasicExpressionsTests.test_subquery",
             "expressions.tests.ExistsTests.test_filter_by_empty_exists",
             "expressions.tests.ExistsTests.test_negated_empty_exists",
@@ -315,6 +320,7 @@ def django_test_expected_failures(self):
             "queries.tests.EmptyQuerySetTests.test_values_subquery",
             "queries.tests.ExcludeTests.test_exclude_subquery",
             "queries.tests.NullInExcludeTest.test_null_in_exclude_qs",
+            "queries.tests.Queries1Tests.test_combining_does_not_mutate",
             "queries.tests.Queries1Tests.test_ticket9985",
             "queries.tests.Queries1Tests.test_ticket9997",
             "queries.tests.Queries1Tests.test_ticket10742",
@@ -424,6 +430,7 @@ def django_test_expected_failures(self):
             "aggregation.tests.AggregateTestCase.test_count_star",
             "delete.tests.DeletionTests.test_only_referenced_fields_selected",
             "lookup.tests.LookupTests.test_in_ignore_none",
+            "lookup.tests.LookupTests.test_lookup_direct_value_rhs_unwrapped",
             "lookup.tests.LookupTests.test_textfield_exact_null",
             "queries.tests.ExistsSql.test_exists",
             "queries.tests.Queries6Tests.test_col_alias_quoted",

django_mongodb/query_utils.py

@@ -12,6 +12,8 @@ def process_lhs(node, compiler, connection):
         # node is a Func or Expression, possibly with multiple source expressions.
         result = []
         for expr in node.get_source_expressions():
+            if expr is None:
+                continue
             try:
                 result.append(expr.as_mql(compiler, connection))
             except FullResultSet: