{
  "cases": [
    {
      "description": "empty string",
      "input": "",
      "expected": true
    },
    {
      "description": "isogram with only lower case characters",
      "input": "isogram",
      "expected": true
    },
    {
      "description": "word with one duplicated character",
      "input": "eleven",
      "expected": false
    },
    {
      "description": "longest reported english isogram",
      "input": "subdermatoglyphic",
      "expected": true
    },
    {
      "description": "word with duplicated character in mixed case",
      "input": "Alphabet",
      "expected": false
    },
    {
      "description": "hypothetical isogrammic word with hyphen",
      "input": "thumbscrew-japingly",
      "expected": true
    },
    {
      "description": "isogram with duplicated non letter character",
      "input": "Hjelmqvist-Gryb-Zock-Pfund-Wax",
      "expected": true
    },
    {
      "description": "made-up name that is an isogram",
      "input": "Emily Jung Schwartzkopf",
      "expected": true
    }
  ]
}

{
  "exercise": "isogram",
  "comments": [
    "An isogram is a word or phrase without a repeating letter."
  ],
  "version": "1.0.0",
  "cases": [
    {
      "description": "Check if the given string is an isogram",
      "comments": [
        "Output should be a boolean denoting if the string is a isogram or not."
      ],
      "cases": [
        {
          "description": "empty string",
          "property": "isIsogram",
          "input": "",
          "expected": true
        },
        {
          "description": "isogram with only lower case characters",
          "property": "isIsogram",
          "input": "isogram",
          "expected": true
        },
        {
          "description": "word with one duplicated character",
          "property": "isIsogram",
          "input": "eleven",
          "expected": false
        },
        {
          "description": "longest reported english isogram",
          "property": "isIsogram",
          "input": "subdermatoglyphic",
          "expected": true
        },
        {
          "description": "word with duplicated character in mixed case",
          "property": "isIsogram",
          "input": "Alphabet",
          "expected": false
        },
        {
          "description": "hypothetical isogrammic word with hyphen",
          "property": "isIsogram",
          "input": "thumbscrew-japingly",
          "expected": true
        },
        {
          "description": "isogram with duplicated non letter character",
          "property": "isIsogram",
          "input": "Hjelmqvist-Gryb-Zock-Pfund-Wax",
          "expected": true
        },
        {
          "description": "made-up name that is an isogram",
          "property": "isIsogram",
          "input": "Emily Jung Schwartzkopf",
          "expected": true
        }
      ]
    }
  ]
}

Make isogram exercise JSON Schema compliant
Make isogram exercise JSON Schema compliant
