3 files changed, 33 insertions, 1 deletions
diff --git a/tests/backends/base/test_base.py b/tests/backends/base/test_base.py
index f89aec57f0..b07d6d3ceb 100644
--- a/tests/backends/base/test_base.py
+++ b/tests/backends/base/test_base.py
@@ -9,6 +9,13 @@ from ..models import Square
 
 class DatabaseWrapperTests(SimpleTestCase):
 
+    def test_repr(self):
+        conn = connections[DEFAULT_DB_ALIAS]
+        self.assertEqual(
+            repr(conn),
+            f"<DatabaseWrapper vendor={connection.vendor!r} alias='default'>",
+        )
+
     def test_initialization_class_attributes(self):
         """
         The "initialization" class attributes like client_class and
diff --git a/tests/queries/test_query.py b/tests/queries/test_query.py
index 523fa607f0..6ed766e3ae 100644
--- a/tests/queries/test_query.py
+++ b/tests/queries/test_query.py
@@ -6,7 +6,7 @@ from django.db.models.expressions import Col, Func
 from django.db.models.fields.related_lookups import RelatedIsNull
 from django.db.models.functions import Lower
 from django.db.models.lookups import Exact, GreaterThan, IsNull, LessThan
-from django.db.models.sql.query import Query
+from django.db.models.sql.query import JoinPromoter, Query
 from django.db.models.sql.where import OR
 from django.test import SimpleTestCase
 from django.test.utils import register_lookup
@@ -150,3 +150,11 @@ class TestQuery(SimpleTestCase):
         msg = 'Cannot filter against a non-conditional expression.'
         with self.assertRaisesMessage(TypeError, msg):
             query.build_where(Func(output_field=CharField()))
+
+
+class JoinPromoterTest(SimpleTestCase):
+    def test_repr(self):
+        self.assertEqual(
+            repr(JoinPromoter('AND', 3, True)),
+            "JoinPromoter(connector='AND', num_children=3, negated=True)",
+        )
diff --git a/tests/queries/test_sqlcompiler.py b/tests/queries/test_sqlcompiler.py
new file mode 100644
index 0000000000..3116429c05
--- /dev/null
+++ b/tests/queries/test_sqlcompiler.py
@@ -0,0 +1,17 @@
+from django.db import DEFAULT_DB_ALIAS, connection
+from django.db.models.sql import Query
+from django.test import SimpleTestCase
+
+from .models import Item
+
+
+class SQLCompilerTest(SimpleTestCase):
+    def test_repr(self):
+        query = Query(Item)
+        compiler = query.get_compiler(DEFAULT_DB_ALIAS, connection)
+        self.assertEqual(
+            repr(compiler),
+            f"<SQLCompiler model=Item connection="
+            f"<DatabaseWrapper vendor={connection.vendor!r} alias='default'> "
+            f"using='default'>"
+        )