{
  "parameters": {
    "TestCaseId": {
      "type": "string",
      "required": true,
      "documentation": "Test case id used to select the test case to use"
    },
    "Input": {
      "type": "string",
      "required": true,
      "documentation": "the input used to test substring"
    }
  },
  "rules": [
    {
      "documentation": "Substring from beginning of input",
      "conditions": [
        {
          "fn": "stringEquals",
          "argv": [
            "{TestCaseId}",
            "1"
          ]
        },
        {
          "fn": "substring",
          "argv": [
            "{Input}",
            0,
            4,
            false
          ],
          "assign": "output"
        }
      ],
      "error": "The value is: `{output}`",
      "type": "error"
    },
    {
      "documentation": "Substring from end of input",
      "conditions": [
        {
          "fn": "stringEquals",
          "argv": [
            "{TestCaseId}",
            "2"
          ]
        },
        {
          "fn": "substring",
          "argv": [
            "{Input}",
            0,
            4,
            true
          ],
          "assign": "output"
        }
      ],
      "error": "The value is: `{output}`",
      "type": "error"
    },
    {
      "documentation": "Substring the middle of the string",
      "conditions": [
        {
          "fn": "stringEquals",
          "argv": [
            "{TestCaseId}",
            "3"
          ]
        },
        {
          "fn": "substring",
          "argv": [
            "{Input}",
            1,
            3,
            false
          ],
          "assign": "output"
        }
      ],
      "error": "The value is: `{output}`",
      "type": "error"
    },
    {
      "documentation": "fallback when no tests match",
      "conditions": [],
      "error": "No tests matched",
      "type": "error"
    }
  ],
  "version": "1.3"
}