[test][docker_execution] Add test for mismatch between user and configured user

beat/core/test/test_docker_execution.py

@@ -240,3 +240,12 @@ class TestDockerExecution(BaseExecutionMixIn):
 
         nose.tools.eq_(result["status"], 1)
         nose.tools.assert_true("Read-only" in result["user_error"])
+
+    @slow
+    def test_user_mismatch_error(self):
+        result = self.execute(
+            "errors/user/single/1/write_error", [{"out_data": 42}], datasets_uid=0
+        )
+
+        nose.tools.eq_(result["status"], 1)
+        nose.tools.assert_true("Failed to create an user" in result["stderr"])