TST: Add container error tests

unittests/test_error_handling.py

@@ -120,6 +120,36 @@ def test_authorization_exception():
     assert err.entity.name == ent.name
 
 
+def test_empty_container_with_error():
+    """Has to raise an error, even though container is empty."""
+    code = 0
+    cont = _add_error_message_to_entity(db.Container(), code)
+    with raises(TransactionError) as e:
+        raise_errors(cont)
+    # No entity errors
+    assert len(e.value.errors) == 0
+    assert e.value.get_container() == cont
+    assert int(e.value.get_code()) == code
+
+
+def test_faulty_container_with_healthy_entities():
+    """Raises a TransactionError without any EntityErrors since only the
+    container, but none of its entities has an error.
+
+    """
+    code = 0
+    cont = _add_error_message_to_entity(db.Container(), code)
+    cont.append(db.Entity("TestHealthyEnt1"))
+    cont.append(db.Entity("TestHealthyEnt2"))
+    with raises(TransactionError) as e:
+        raise_errors(cont)
+    # No entity errors
+    assert len(e.value.errors) == 0
+    assert len(e.value.entities) == 0
+    assert e.value.get_container() == cont
+    assert int(e.value.get_code()) == code
+
+    
 # #################### Children with children ####################