I'm submitting a ...

• bug report
• feature request
• support request => Please do not submit support request here, see note at the top of this template.

What is the current behavior?

Parametrizing a test creates container json files for the parametrized parameter that doesn't seem to be used at all, as it does not have a children node.

It does not appear on the setup section of the tests, which is not a big problem as the parametrization for each test instance is written inside the result json itself.

If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem

import pytest


@pytest.mark.parametrize("message",[
    "a",
    "b"
])
def test1(message):
    assert 1 == 1

What is the expected behavior?

Add a children node to the created container json files, so parametrization appears on setup, or don't create a container json for test parametrization at all.

What is the motivation / use case for changing the behavior?

Have a consistent behavior and do not create files if not needed.

Please tell us about your environment:

• Allure version: 2.6.0
• Test framework: pytest@3.5
• Allure adaptor: allure-pytest@2.3.2b1

Other information