json_schema/example/from_url/validate_instance_from_url.dart

#!/usr/bin/env dart
// Copyright 2013-2018 Workiva Inc.
//
// Licensed under the Boost Software License (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.boost.org/LICENSE_1_0.txt
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// This software or document includes material copied from or derived
// from JSON-Schema-Test-Suite (https://github.com/json-schema-org/JSON-Schema-Test-Suite),
// Copyright (c) 2012 Julian Berman, which is licensed under the following terms:
//
//     Copyright (c) 2012 Julian Berman
//
//     Permission is hereby granted, free of charge, to any person obtaining a copy
//     of this software and associated documentation files (the "Software"), to deal
//     in the Software without restriction, including without limitation the rights
//     to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//     copies of the Software, and to permit persons to whom the Software is
//     furnished to do so, subject to the following conditions:
//
//     The above copyright notice and this permission notice shall be included in
//     all copies or substantial portions of the Software.
//
//     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//     IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//     AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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//     THE SOFTWARE.

import "dart:convert" as convert;
import "package:json_schema/json_schema.dart";
import "package:logging/logging.dart";

main() {
  Logger.root.onRecord.listen((LogRecord rec) => print('${rec.level.name}: ${rec.time}: ${rec.message}'));
  Logger.root.level = Level.SHOUT;

  //////////////////////////////////////////////////////////////////////
  // Pull in schema from web
  //////////////////////////////////////////////////////////////////////
  String url = "http://json-schema.org/draft-04/schema";
  Schema.createSchemaFromUrl(url).then((Schema schema) {
    // TODO: Figure out the redirect issues here
    //   if(false) {
    //     print('''Does schema validate itself?
    //       ${schema.validate(schema.schemaMap)}''');
    //   }

    var validSchema = {"type": "integer"};
    print('''Does schema validate valid schema $validSchema?
  ${schema.validate(validSchema)}''');

    var invalidSchema = {"type": "nibble"};
    print('''Does schema validate invalid schema $invalidSchema?
  ${schema.validate(invalidSchema)}''');
  });

  //////////////////////////////////////////////////////////////////////
  // Pull in schema from file in current directory
  //////////////////////////////////////////////////////////////////////
  url = "grades_schema.json";
  Schema.createSchemaFromUrl(url).then((schema) {
    var grades = convert.JSON.decode('''
{
    "semesters": [
        {
            "semester": 1,
            "grades": [
                {
                    "type": "homework",
                    "date": "09/27/2013",
                    "grade": 100,
                    "avg": 93,
                    "std": 8
                },
                {
                    "type": "homework",
                    "date": "09/28/2013",
                    "grade": 100,
                    "avg": 60,
                    "std": 25
                }
            ]
        }
      ]
}''');

    print('''Does grades schema validate $grades
  ${schema.validate(grades)}''');
  });
}