diff --git a/backend/geonature/tests/test_permissions.py b/backend/geonature/tests/test_permissions.py
index a20882627e..4f43f15723 100644
--- a/backend/geonature/tests/test_permissions.py
+++ b/backend/geonature/tests/test_permissions.py
@@ -152,6 +152,94 @@ def _assert_cruved(role, cruved, module=None, object=None):
 
 @pytest.mark.usefixtures("temporary_transaction")
 class TestPermissions:
+    def test_module_objet_inheritance(
+        self,
+        permissions,
+        assert_cruved,
+        module_gn,
+        module_a,
+        module_b,
+        object_all,
+        object_a,
+        object_b,
+    ):
+        permissions("r1", "121-31", module=module_gn, object=object_all)  # [r1_1]
+
+        permissions("r1", "0123--", module=module_a, object=object_all)  # [r1_2]
+        permissions("r1", "0121-3", module=module_b, object=object_all)  # [r1_3]
+
+        permissions("r1", "1-1---", module=module_a, object=object_a)  # [r1_4]
+        permissions("r1", "--2---", module=module_a, object=object_b)  # [r1_5]
+        permissions("r1", "----2-", module=module_b, object=object_a)  # [r1_6]
+        permissions("r1", "-1----", module=module_b, object=object_b)  # [r1_7]
+
+        is_with_inheritance_modules_objects = True
+
+        # Permissions added to keep "GEONATURE" module and "ALL" object inheritance
+        if is_with_inheritance_modules_objects:
+            # Inheritances from module "GEONATURE"
+            #   - from [r1_1]
+            permissions("r1", "----31", module=module_a, object=object_all)  # [r1_'1] given [r1_2]
+            permissions("r1", "----3-", module=module_b, object=object_all)  # [r1_'2] given [r1_3]
+
+            # Inheritances from module "A" and object "ALL"
+            #   - from [r1_2]
+            permissions("r1", "-1-3--", module=module_a, object=object_a)  # given [r1_4]
+            permissions("r1", "01-3--", module=module_a, object=object_b)  # given [r1_5]
+            #   - from [r1_3]
+            permissions("r1", "0121-3", module=module_b, object=object_a)  # given [r1_6]
+            permissions("r1", "0-21-3", module=module_b, object=object_b)  # given [r1_7]
+
+            # Inheritances from module "GEONATURE" and object "ALL"
+            #   - from [r1_'1]
+            permissions("r1", "----31", module=module_a, object=object_a)  # given [r1_4]
+            permissions("r1", "----31", module=module_a, object=object_b)  # given [r1_5]
+            #   - from [r1_'2]
+            permissions("r1", "------", module=module_b, object=object_a)  # given [r1_6]
+            permissions("r1", "----3-", module=module_b, object=object_b)  # given [r1_7]
+
+        ## Testing computed scope permissions
+        # With additional permissions to inherit "GEONATURE" and "ALL"
+        if is_with_inheritance_modules_objects:
+            # Scope permissions for "GEONATURE" and "ALL"
+            assert_cruved("r1", "121031")  # given [r1_1]
+            assert_cruved("r2", "000000")  #
+            assert_cruved("g1_r1", "000000")  #
+            assert_cruved("g1_r2", "000000")  #
+            assert_cruved("g2_r1", "000000")  #
+            assert_cruved("g12_r1", "000000")  #
+            assert_cruved("g12_r2", "000000")  #
+
+            # Scope permissions for "A"
+            assert_cruved("r1", "012331", module=module_a)  # given [r1_2], then [r1_1]
+            assert_cruved("r1", "111331", module=module_a, object=object_a)
+            assert_cruved("r1", "012331", module=module_a, object=object_b)
+
+            # Scope permissions for "B"
+            assert_cruved("r1", "012133", module=module_b)
+            assert_cruved("r1", "012133", module=module_b, object=object_a)
+            assert_cruved("r1", "012133", module=module_b, object=object_b)
+        # Without additional permissions to inherit "GEONATURE" and "ALL"
+        else:
+            # Scope permissions for "GEONATURE" and "ALL"
+            assert_cruved("r1", "121031")
+            assert_cruved("r2", "000000")
+            assert_cruved("g1_r1", "000000")
+            assert_cruved("g1_r2", "000000")
+            assert_cruved("g2_r1", "000000")
+            assert_cruved("g12_r1", "000000")
+            assert_cruved("g12_r2", "000000")
+
+            # Scope permissions for "A"
+            assert_cruved("r1", "012300", module=module_a)
+            assert_cruved("r1", "000000", module=module_a, object=object_a)
+            assert_cruved("r1", "000000", module=module_a, object=object_b)
+
+            # Scope permissions for "B" and "ALL"
+            assert_cruved("r1", "012103", module=module_b)
+            assert_cruved("r1", "000000", module=module_b, object=object_a)
+            assert_cruved("r1", "000000", module=module_b, object=object_b)
+
     def test_no_right(self, assert_cruved, module_gn, module_a, object_a):
         assert_cruved("r1", "000000")
         assert_cruved("g1_r1", "000000", module_a)