[
  {
    "os": [
      "chromeos"
    ],
    "simple_policy_pref_mapping_test": {
      "pref_name": "ash.ambient.managed_screensaver.images",
      "pref_location": "signin_profile",
      "default_value": [],
      "values_to_test": [
        [
          "https://example.com/1.jpg",
          "https://example.com/2.jpg"
        ]
      ]
    }
  }
]