def METHOD_NAME(
    self, kube_version, section
):
    """Should only show the additional alert rules for the given section."""
    values = {
        "prometheus": {
            "defaultAlerts": {
                section: {
                    "enabled": False,
                }
            },
            "additionalAlerts": {
                section: dedent(
                    """
                    - alert: some-happy-alert
                      expr: sum(all-happiness)
                    """
                )
            },
        }
    }
    docs = render_chart(
        kube_version=kube_version,
        show_only=self.show_only,
        values=values,
    )
    groups = yaml.safe_load(docs[0]["data"]["alerts"])["groups"]
    assert len(groups) == 22
    assert [x["rules"] for x in groups if x["name"] == section] == [
        [{"alert": "some-happy-alert", "expr": "sum(all-happiness)"}]
    ]
    assert [
        x["rules"] != [{"alert": "some-happy-alert", "expr": "sum(all-happiness)"}]
        for x in groups
        if x["name"] != section
    ]