Newtonsoft.Json.Tests\Converters\RegexConverterTests.cs

using System;

using System.Collections.Generic;

#if !SILVERLIGHT && !PocketPC && !NET20

using System.Data.Linq;

#endif

#if !SILVERLIGHT

using System.Data.SqlTypes;

#endif

using System.IO;

using System.Linq;

using System.Text;

using System.Text.RegularExpressions;

using Newtonsoft.Json.Bson;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Utilities;

using NUnit.Framework;

using Newtonsoft.Json.Tests.TestObjects;

namespace Newtonsoft.Json.Tests.Converters

{

  public class RegexConverterTests : TestFixtureBase

  {

    public class RegexTestClass

    {

      public Regex Regex { get; set; }

    }

    [Test]

    public void SerializeToText()

    {

      Regex regex = new Regex("abc", RegexOptions.IgnoreCase | RegexOptions.CultureInvariant);

      string json = JsonConvert.SerializeObject(regex, Formatting.Indented, new RegexConverter());

      Assert.AreEqual(@"{

  ""Pattern"": ""abc"",

  ""Options"": 513

}", json);

    }

    [Test]

    public void SerializeToBson()

    {

      Regex regex = new Regex("abc", RegexOptions.IgnoreCase | RegexOptions.CultureInvariant);

      MemoryStream ms = new MemoryStream();

      BsonWriter writer = new BsonWriter(ms);

      JsonSerializer serializer = new JsonSerializer();

      serializer.Converters.Add(new RegexConverter());

      serializer.Serialize(writer, new RegexTestClass { Regex = regex });

      string expected = "13-00-00-00-0B-52-65-67-65-78-00-61-62-63-00-69-75-00-00";

      string bson = MiscellaneousUtils.BytesToHex(ms.ToArray());

      Assert.AreEqual(expected, bson);

    }

    [Test]

    public void DeserializeFromText()

    {

      string json = @"{

  ""Pattern"": ""abc"",

  ""Options"": 513

}";

      Regex newRegex = JsonConvert.DeserializeObject<Regex>(json, new RegexConverter());

      Assert.AreEqual("abc", newRegex.ToString());

      Assert.AreEqual(RegexOptions.IgnoreCase | RegexOptions.CultureInvariant, newRegex.Options);

    }

    [Test]

    public void DeserializeFromBson()

    {

      MemoryStream ms = new MemoryStream(MiscellaneousUtils.HexToBytes("13-00-00-00-0B-52-65-67-65-78-00-61-62-63-00-69-75-00-00"));

      BsonReader reader = new BsonReader(ms);

      JsonSerializer serializer = new JsonSerializer();

      serializer.Converters.Add(new RegexConverter());

      RegexTestClass c = serializer.Deserialize<RegexTestClass>(reader);

      Assert.AreEqual("abc", c.Regex.ToString());

      Assert.AreEqual(RegexOptions.IgnoreCase, c.Regex.Options);

    }

    [Test]

    public void ConvertEmptyRegexBson()

    {

      Regex regex = new Regex(string.Empty);

      MemoryStream ms = new MemoryStream();

      BsonWriter writer = new BsonWriter(ms);

      JsonSerializer serializer = new JsonSerializer();

      serializer.Converters.Add(new RegexConverter());

      serializer.Serialize(writer, new RegexTestClass { Regex = regex });

      ms.Seek(0, SeekOrigin.Begin);

      BsonReader reader = new BsonReader(ms);

      serializer.Converters.Add(new RegexConverter());

      RegexTestClass c = serializer.Deserialize<RegexTestClass>(reader);

      Assert.AreEqual("", c.Regex.ToString());

      Assert.AreEqual(RegexOptions.None, c.Regex.Options);

    }

    [Test]

    public void ConvertRegexWithAllOptionsBson()

    {

      Regex regex = new Regex(

        "/",

        RegexOptions.IgnoreCase | RegexOptions.Singleline | RegexOptions.Multiline | RegexOptions.ExplicitCapture);

      MemoryStream ms = new MemoryStream();

      BsonWriter writer = new BsonWriter(ms);

      JsonSerializer serializer = new JsonSerializer();

      serializer.Converters.Add(new RegexConverter());

      serializer.Serialize(writer, new RegexTestClass { Regex = regex });

      string expected = "14-00-00-00-0B-52-65-67-65-78-00-2F-00-69-6D-73-75-78-00-00";

      string bson = MiscellaneousUtils.BytesToHex(ms.ToArray());

      Assert.AreEqual(expected, bson);

      ms.Seek(0, SeekOrigin.Begin);

      BsonReader reader = new BsonReader(ms);

      serializer.Converters.Add(new RegexConverter());

      RegexTestClass c = serializer.Deserialize<RegexTestClass>(reader);

      Assert.AreEqual("/", c.Regex.ToString());

      Assert.AreEqual(RegexOptions.IgnoreCase | RegexOptions.Singleline | RegexOptions.Multiline | RegexOptions.ExplicitCapture, c.Regex.Options);

    }

    [Test]

    public void ConvertEmptyRegexJson()

    {

      Regex regex = new Regex("");

      string json = JsonConvert.SerializeObject(new RegexTestClass { Regex = regex }, Formatting.Indented, new RegexConverter());

      Assert.AreEqual(@"{

  ""Regex"": {

    ""Pattern"": """",

    ""Options"": 0

  }

}", json);

      RegexTestClass newRegex = JsonConvert.DeserializeObject<RegexTestClass>(json, new RegexConverter());

      Assert.AreEqual("", newRegex.Regex.ToString());

      Assert.AreEqual(RegexOptions.None, newRegex.Regex.Options);

    }

  }

}