Refs #23766 -- Added tests for CursorWrapper.callproc().

Thanks Tim Graham for the review.

django/db/backends/base/features.py

@@ -235,6 +235,11 @@ class BaseDatabaseFeatures:
     # Does the backend support CAST with precision?
     supports_cast_with_precision = True
 
+    # SQL to create a procedure for use by the Django test suite. The
+    # functionality of the procedure isn't important.
+    create_test_procedure_without_params_sql = None
+    create_test_procedure_with_int_param_sql = None
+
     def __init__(self, connection):
         self.connection = connection
 

django/db/backends/base/schema.py

@@ -66,6 +66,8 @@ class BaseDatabaseSchemaEditor:
     sql_create_pk = "ALTER TABLE %(table)s ADD CONSTRAINT %(name)s PRIMARY KEY (%(columns)s)"
     sql_delete_pk = "ALTER TABLE %(table)s DROP CONSTRAINT %(name)s"
 
+    sql_delete_procedure = 'DROP PROCEDURE %(procedure)s'
+
     def __init__(self, connection, collect_sql=False, atomic=True):
         self.connection = connection
         self.collect_sql = collect_sql
@@ -1027,3 +1029,10 @@ class BaseDatabaseSchemaEditor:
             ))
         for constraint_name in constraint_names:
             self.execute(self._delete_constraint_sql(self.sql_delete_pk, model, constraint_name))
+
+    def remove_procedure(self, procedure_name, param_types=()):
+        sql = self.sql_delete_procedure % {
+            'procedure': self.quote_name(procedure_name),
+            'param_types': ','.join(param_types),
+        }
+        self.execute(sql)

django/db/backends/mysql/features.py

@@ -33,6 +33,20 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     supports_slicing_ordering_in_compound = True
     supports_index_on_text_field = False
     has_case_insensitive_like = False
+    create_test_procedure_without_params_sql = """
+        CREATE PROCEDURE test_procedure ()
+        BEGIN
+            DECLARE V_I INTEGER;
+            SET V_I = 1;
+        END;
+    """
+    create_test_procedure_with_int_param_sql = """
+        CREATE PROCEDURE test_procedure (P_I INTEGER)
+        BEGIN
+            DECLARE V_I INTEGER;
+            SET V_I = P_I;
+        END;
+    """
 
     @cached_property
     def _mysql_storage_engine(self):

django/db/backends/oracle/features.py

@@ -40,3 +40,17 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     ignores_table_name_case = True
     supports_index_on_text_field = False
     has_case_insensitive_like = False
+    create_test_procedure_without_params_sql = """
+        CREATE PROCEDURE "TEST_PROCEDURE" AS
+            V_I INTEGER;
+        BEGIN
+            V_I := 1;
+        END;
+    """
+    create_test_procedure_with_int_param_sql = """
+        CREATE PROCEDURE "TEST_PROCEDURE" (P_I INTEGER) AS
+            V_I INTEGER;
+        BEGIN
+            V_I := P_I;
+        END;
+    """

django/db/backends/postgresql/features.py

@@ -33,6 +33,22 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     can_clone_databases = True
     supports_temporal_subtraction = True
     supports_slicing_ordering_in_compound = True
+    create_test_procedure_without_params_sql = """
+        CREATE FUNCTION test_procedure () RETURNS void AS $$
+        DECLARE
+            V_I INTEGER;
+        BEGIN
+            V_I := 1;
+        END;
+    $$ LANGUAGE plpgsql;"""
+    create_test_procedure_with_int_param_sql = """
+        CREATE FUNCTION test_procedure (P_I INTEGER) RETURNS void AS $$
+        DECLARE
+            V_I INTEGER;
+        BEGIN
+            V_I := P_I;
+        END;
+    $$ LANGUAGE plpgsql;"""
 
     @cached_property
     def has_select_for_update_skip_locked(self):

django/db/backends/postgresql/schema.py

@@ -20,6 +20,8 @@ class DatabaseSchemaEditor(BaseDatabaseSchemaEditor):
     # dropping it in the same transaction.
     sql_delete_fk = "SET CONSTRAINTS %(name)s IMMEDIATE; ALTER TABLE %(table)s DROP CONSTRAINT %(name)s"
 
+    sql_delete_procedure = 'DROP FUNCTION %(procedure)s(%(param_types)s)'
+
     def quote_value(self, value):
         return psycopg2.extensions.adapt(value)