{
  "variables": {
    "bar"    : "a",
    "x:bar"  : "b"
  },

  "tests": [
    {
      "template": "http://example.org/?q={bar?}",
      "expected": "http://example.org/?q=a"
    },

    {
      "template": "/{dne?}",
      "expected": "/"
    },

    {
      "template": "http://example.org/?q={bar}&r={x:bar}",
      "expected": "http://example.org/?q=a&r=b"
    }
  ]
}