[
  {
    "description": "async custom keywords (validated)",
    "schema": {
      "$async": true,
      "properties": {
        "userId": {
          "type": "integer",
          "idExists": { "table": "users" }
        },
        "postId": {
          "type": "integer",
          "idExists": { "table": "posts" }
        },
        "categoryId": {
          "description": "will throw if present, no such table",
          "type": "integer",
          "idExists": { "table": "categories" }
        }
      }
    },
    "tests": [
      {
        "description": "valid object",
        "data": { "userId": 1, "postId": 21 },
        "valid": true
      },
      {
        "description": "another valid object",
        "data": { "userId": 5, "postId": 25 },
        "valid": true
      },
      {
        "description": "invalid - no such post",
        "data": { "userId": 5, "postId": 10 },
        "valid": false
      },
      {
        "description": "invalid - no such user",
        "data": { "userId": 9, "postId": 25 },
        "valid": false
      },
      {
        "description": "should throw exception during validation - no such table",
        "data": { "postId": 25, "categoryId": 1 },
        "error": "no such table"
      }
    ]
  },
  {
    "description": "async custom keywords (validated with errors)",
    "schema": {
      "$async": true,
      "properties": {
        "userId": {
          "type": "integer",
          "idExistsWithError": { "table": "users" }
        },
        "postId": {
          "type": "integer",
          "idExistsWithError": { "table": "posts" }
        },
        "categoryId": {
          "description": "will throw if present, no such table",
          "type": "integer",
          "idExistsWithError": { "table": "categories" }
        }
      }
    },
    "tests": [
      {
        "description": "valid object",
        "data": { "userId": 1, "postId": 21 },
        "valid": true
      },
      {
        "description": "another valid object",
        "data": { "userId": 5, "postId": 25 },
        "valid": true
      },
      {
        "description": "invalid - no such post",
        "data": { "userId": 5, "postId": 10 },
        "valid": false
      },
      {
        "description": "invalid - no such user",
        "data": { "userId": 9, "postId": 25 },
        "valid": false
      },
      {
        "description": "should throw exception during validation - no such table",
        "data": { "postId": 25, "categoryId": 1 },
        "error": "no such table"
      }
    ]
  },
  {
    "description": "async custom keywords (compiled)",
    "schema": {
      "$async": true,
      "properties": {
        "userId": {
          "type": "integer",
          "idExistsCompiled": { "table": "users" }
        },
        "postId": {
          "type": "integer",
          "idExistsCompiled": { "table": "posts" }
        }
      }
    },
    "tests": [
      {
        "description": "valid object",
        "data": { "userId": 1, "postId": 21 },
        "valid": true
      },
      {
        "description": "another valid object",
        "data": { "userId": 5, "postId": 25 },
        "valid": true
      },
      {
        "description": "invalid - no such post",
        "data": { "userId": 5, "postId": 10 },
        "valid": false
      },
      {
        "description": "invalid - no such user",
        "data": { "userId": 9, "postId": 25 },
        "valid": false
      }
    ]
  },
  {
    "description": "custom keyword in async schema",
    "schema": {
      "$async": true,
      "const": 5
    },
    "tests": [
      {
        "description": "valid",
        "data": 5,
        "valid": true
      },
      {
        "description": "valid",
        "data": 1,
        "valid": false
      }
    ]
  }
]