{
  "$schema": "https://raw.githubusercontent.com/unicode-org/message-format-wg/main/test/schemas/v0/tests.schema.json",
  "scenario": "Math function",
  "description": "The built-in formatter and selector for addition and subtraction.",
  "defaultTestProperties": {
    "bidiIsolation": "none",
    "locale": "en-US"
  },
  "tests": [
    {
      "src": "{:math add=13}",
      "expErrors": [{ "type": "bad-operand" }]
    },
    {
      "src": "{foo :math add=13}",
      "expErrors": [{ "type": "bad-operand" }]
    },
    {
      "src": "{42 :math}",
      "expErrors": [{ "type": "bad-option" }]
    },
    {
      "src": "{42 :math add=foo}",
      "expErrors": [{ "type": "bad-option" }]
    },
    {
      "src": "{42 :math subtract=foo}",
      "expErrors": [{ "type": "bad-option" }]
    },
    {
      "src": "{42 :math foo=13}",
      "expErrors": [{ "type": "bad-option" }]
    },
    {
      "src": "{42 :math add=13 subtract=13}",
      "expErrors": [{ "type": "bad-option" }]
    },
    {
      "src": "{41 :math add=1}",
      "exp": "42"
    },
    {
      "src": "{52 :math subtract=10}",
      "exp": "42"
    },
    {
      "src": "{41 :math add=1 foo=13}",
      "exp": "42"
    },
    {
      "src": ".local $x = {41 :integer signDisplay=always} {{{$x :math add=1}}}",
      "exp": "+42"
    },
    {
      "src": ".local $x = {52 :number signDisplay=always} {{{$x :math subtract=10}}}",
      "exp": "+42"
    },
    {
      "src": "{$x :math add=1}",
      "params": [{ "name": "x", "value": 41 }],
      "exp": "42"
    },
    {
      "src": "{$x :math subtract=10}",
      "params": [{ "name": "x", "value": 52 }],
      "exp": "42"
    },
    {
      "src": ".local $x = {1 :math add=1} .match $x 1 {{=1}} 2 {{=2}} * {{other}}",
      "exp": "=2"
    },
    {
      "src": ".local $x = {10 :integer} .local $y = {$x :math subtract=6} .match $y 10 {{=10}} 4 {{=4}} * {{other}}",
      "exp": "=4"
    }
  ]
}