Newtonsoft.Json.Tests\JsonTextWriterTest.cs

#region License

// Copyright (c) 2007 James Newton-King

//

// 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 LIABILITY,

// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

// OTHER DEALINGS IN THE SOFTWARE.

#endregion

using System;

using System.Collections.Generic;

using System.Text;

using NUnit.Framework;

using Newtonsoft.Json;

using System.IO;

namespace Newtonsoft.Json.Tests

{

  public class JsonTextWriterTest : TestFixtureBase

  {

    [Test]

    public void ValueFormatting()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      using (JsonWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.WriteStartArray();

        jsonWriter.WriteValue('@');

        jsonWriter.WriteValue("\r\n\t\f\b?{\\r\\n\"\'");

        jsonWriter.WriteValue(true);

        jsonWriter.WriteValue(10);

        jsonWriter.WriteValue(10.99);

        jsonWriter.WriteValue(0.99);

        jsonWriter.WriteValue(0.000000000000000001d);

        jsonWriter.WriteValue(0.000000000000000001m);

        jsonWriter.WriteValue((string)null);

        jsonWriter.WriteValue((object)null);

        jsonWriter.WriteValue("This is a string.");

        jsonWriter.WriteNull();

        jsonWriter.WriteUndefined();

        jsonWriter.WriteEndArray();

      }

      string expected = @"[""@"",""\r\n\t\f\b?{\\r\\n\""'"",true,10,10.99,0.99,1E-18,0.000000000000000001,null,null,""This is a string."",null,undefined]";

      string result = sb.ToString();

      Console.WriteLine("ValueFormatting");

      Console.WriteLine(result);

      Assert.AreEqual(expected, result);

    }

    [Test]

    public void NullableValueFormatting()

    {

      StringWriter sw = new StringWriter();

      using (JsonTextWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.WriteStartArray();

        jsonWriter.WriteValue((char?)null);

        jsonWriter.WriteValue((char?)'c');

        jsonWriter.WriteValue((bool?)null);

        jsonWriter.WriteValue((bool?)true);

        jsonWriter.WriteValue((byte?)null);

        jsonWriter.WriteValue((byte?)1);

        jsonWriter.WriteValue((sbyte?)null);

        jsonWriter.WriteValue((sbyte?)1);

        jsonWriter.WriteValue((short?)null);

        jsonWriter.WriteValue((short?)1);

        jsonWriter.WriteValue((ushort?)null);

        jsonWriter.WriteValue((ushort?)1);

        jsonWriter.WriteValue((int?)null);

        jsonWriter.WriteValue((int?)1);

        jsonWriter.WriteValue((uint?)null);

        jsonWriter.WriteValue((uint?)1);

        jsonWriter.WriteValue((long?)null);

        jsonWriter.WriteValue((long?)1);

        jsonWriter.WriteValue((ulong?)null);

        jsonWriter.WriteValue((ulong?)1);

        jsonWriter.WriteValue((double?)null);

        jsonWriter.WriteValue((double?)1.1);

        jsonWriter.WriteValue((float?)null);

        jsonWriter.WriteValue((float?)1.1);

        jsonWriter.WriteValue((decimal?)null);

        jsonWriter.WriteValue((decimal?)1.1m);

        jsonWriter.WriteValue((DateTime?)null);

        jsonWriter.WriteValue((DateTime?)new DateTime(JsonConvert.InitialJavaScriptDateTicks, DateTimeKind.Utc));

#if !PocketPC && !NET20

        jsonWriter.WriteValue((DateTimeOffset?)null);

        jsonWriter.WriteValue((DateTimeOffset?)new DateTimeOffset(JsonConvert.InitialJavaScriptDateTicks, TimeSpan.Zero));

#endif

        jsonWriter.WriteEndArray();

      }

      string json = sw.ToString();

      string expected;

#if !PocketPC && !NET20

      expected = @"[null,""c"",null,true,null,1,null,1,null,1,null,1,null,1,null,1,null,1,null,1,null,1.1,null,1.1,null,1.1,null,""\/Date(0)\/"",null,""\/Date(0+0000)\/""]";

#else

      expected = @"[null,""c"",null,true,null,1,null,1,null,1,null,1,null,1,null,1,null,1,null,1,null,1.1,null,1.1,null,1.1,null,""\/Date(0)\/""]";

#endif

      Assert.AreEqual(expected, json);

    }

    [Test]

    public void WriteValueObjectWithNullable()

    {

      StringWriter sw = new StringWriter();

      using (JsonTextWriter jsonWriter = new JsonTextWriter(sw))

      {

        char? value = 'c';

        jsonWriter.WriteStartArray();

        jsonWriter.WriteValue((object)value);

        jsonWriter.WriteEndArray();

      }

      string json = sw.ToString();

      string expected = @"[""c""]";

      Assert.AreEqual(expected, json);

    }

    [Test]

    [ExpectedException(typeof(ArgumentException), ExpectedMessage = @"Unsupported type: System.Version. Use the JsonSerializer class to get the object's JSON representation.")]

    public void WriteValueObjectWithUnsupportedValue()

    {

      StringWriter sw = new StringWriter();

      using (JsonTextWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.WriteStartArray();

        jsonWriter.WriteValue(new Version(1, 1, 1, 1));

        jsonWriter.WriteEndArray();

      }

    }

    [Test]

    public void StringEscaping()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      using (JsonWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.WriteStartArray();

        jsonWriter.WriteValue(@"""These pretzels are making me thirsty!""");

        jsonWriter.WriteValue("Jeff's house was burninated.");

        jsonWriter.WriteValue(@"1. You don't talk about fight club.

2. You don't talk about fight club.");

        jsonWriter.WriteValue("35% of\t statistics\n are made\r up.");

        jsonWriter.WriteEndArray();

      }

      string expected = @"[""\""These pretzels are making me thirsty!\"""",""Jeff's house was burninated."",""1. You don't talk about fight club.\r\n2. You don't talk about fight club."",""35% of\t statistics\n are made\r up.""]";

      string result = sb.ToString();

      Console.WriteLine("StringEscaping");

      Console.WriteLine(result);

      Assert.AreEqual(expected, result);

    }

    [Test]

    public void Indenting()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      using (JsonWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.Formatting = Formatting.Indented;

        jsonWriter.WriteStartObject();

        jsonWriter.WritePropertyName("CPU");

        jsonWriter.WriteValue("Intel");

        jsonWriter.WritePropertyName("PSU");

        jsonWriter.WriteValue("500W");

        jsonWriter.WritePropertyName("Drives");

        jsonWriter.WriteStartArray();

        jsonWriter.WriteValue("DVD read/writer");

        jsonWriter.WriteComment("(broken)");

        jsonWriter.WriteValue("500 gigabyte hard drive");

        jsonWriter.WriteValue("200 gigabype hard drive");

        jsonWriter.WriteEnd();

        jsonWriter.WriteEndObject();

      }

      // {

      //   "CPU": "Intel",

      //   "PSU": "500W",

      //   "Drives": [

      //     "DVD read/writer"

      //     /*(broken)*/,

      //     "500 gigabyte hard drive",

      //     "200 gigabype hard drive"

      //   ]

      // }

      string expected = @"{

  ""CPU"": ""Intel"",

  ""PSU"": ""500W"",

  ""Drives"": [

    ""DVD read/writer""

    /*(broken)*/,

    ""500 gigabyte hard drive"",

    ""200 gigabype hard drive""

  ]

}";

      string result = sb.ToString();

      Console.WriteLine("Indenting");

      Console.WriteLine(result);

      Assert.AreEqual(expected, result);

    }

    [Test]

    public void State()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      using (JsonWriter jsonWriter = new JsonTextWriter(sw))

      {

        Assert.AreEqual(WriteState.Start, jsonWriter.WriteState);

        jsonWriter.WriteStartObject();

        Assert.AreEqual(WriteState.Object, jsonWriter.WriteState);

        jsonWriter.WritePropertyName("CPU");

        Assert.AreEqual(WriteState.Property, jsonWriter.WriteState);

        jsonWriter.WriteValue("Intel");

        Assert.AreEqual(WriteState.Object, jsonWriter.WriteState);

        jsonWriter.WritePropertyName("Drives");

        Assert.AreEqual(WriteState.Property, jsonWriter.WriteState);

        jsonWriter.WriteStartArray();

        Assert.AreEqual(WriteState.Array, jsonWriter.WriteState);

        jsonWriter.WriteValue("DVD read/writer");

        Assert.AreEqual(WriteState.Array, jsonWriter.WriteState);

        jsonWriter.WriteEnd();

        Assert.AreEqual(WriteState.Object, jsonWriter.WriteState);

        jsonWriter.WriteEndObject();

        Assert.AreEqual(WriteState.Start, jsonWriter.WriteState);

      }

    }

    [Test]

    public void FloatingPointNonFiniteNumbers()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      using (JsonWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.Formatting = Formatting.Indented;

        jsonWriter.WriteStartArray();

        jsonWriter.WriteValue(double.NaN);

        jsonWriter.WriteValue(double.PositiveInfinity);

        jsonWriter.WriteValue(double.NegativeInfinity);

        jsonWriter.WriteValue(float.NaN);

        jsonWriter.WriteValue(float.PositiveInfinity);

        jsonWriter.WriteValue(float.NegativeInfinity);

        jsonWriter.WriteEndArray();

        jsonWriter.Flush();

      }

      string expected = @"[

  NaN,

  Infinity,

  -Infinity,

  NaN,

  Infinity,

  -Infinity

]";

      string result = sb.ToString();

      Assert.AreEqual(expected, result);

    }

    [Test]

    public void WriteRawInStart()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      using (JsonWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.Formatting = Formatting.Indented;

        jsonWriter.WriteRaw("[1,2,3,4,5]");

        jsonWriter.WriteWhitespace("  ");

        jsonWriter.WriteStartArray();

        jsonWriter.WriteValue(double.NaN);

        jsonWriter.WriteEndArray();

      }

      string expected = @"[1,2,3,4,5]  [

  NaN

]";

      string result = sb.ToString();

      Assert.AreEqual(expected, result);

    }

    [Test]

    public void WriteRawInArray()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      using (JsonWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.Formatting = Formatting.Indented;

        jsonWriter.WriteStartArray();

        jsonWriter.WriteValue(double.NaN);

        jsonWriter.WriteRaw(",[1,2,3,4,5]");

        jsonWriter.WriteRaw(",[1,2,3,4,5]");

        jsonWriter.WriteValue(float.NaN);

        jsonWriter.WriteEndArray();

      }

      string expected = @"[

  NaN,[1,2,3,4,5],[1,2,3,4,5],

  NaN

]";

      string result = sb.ToString();

      Assert.AreEqual(expected, result);

    }

    [Test]

    public void WriteRawInObject()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      using (JsonWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.Formatting = Formatting.Indented;

        jsonWriter.WriteStartObject();

        jsonWriter.WriteRaw(@"""PropertyName"":[1,2,3,4,5]");

        jsonWriter.WriteEnd();

      }

      string expected = @"{""PropertyName"":[1,2,3,4,5]}";

      string result = sb.ToString();

      Assert.AreEqual(expected, result);

    }

    [Test]

    public void WriteToken()

    {

      JsonTextReader reader = new JsonTextReader(new StringReader("[1,2,3,4,5]"));

      reader.Read();

      reader.Read();

      StringWriter sw = new StringWriter();

      JsonTextWriter writer = new JsonTextWriter(sw);

      writer.WriteToken(reader);

      Assert.AreEqual("1", sw.ToString());

    }

    [Test]

    public void WriteRawValue()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      using (JsonWriter jsonWriter = new JsonTextWriter(sw))

      {

        int i = 0;

        string rawJson = "[1,2]";

        jsonWriter.WriteStartObject();

        while (i < 3)

        {

          jsonWriter.WritePropertyName("d" + i);

          jsonWriter.WriteRawValue(rawJson);

          i++;

        }

        jsonWriter.WriteEndObject();

      }

      Assert.AreEqual(@"{""d0"":[1,2],""d1"":[1,2],""d2"":[1,2]}", sb.ToString());

    }

    [Test]

    public void WriteObjectNestedInConstructor()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      using (JsonWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.WriteStartObject();

        jsonWriter.WritePropertyName("con");

        jsonWriter.WriteStartConstructor("Ext.data.JsonStore");

        jsonWriter.WriteStartObject();

        jsonWriter.WritePropertyName("aa");

        jsonWriter.WriteValue("aa");

        jsonWriter.WriteEndObject();

        jsonWriter.WriteEndConstructor();

        jsonWriter.WriteEndObject();

      }

      Assert.AreEqual(@"{""con"":new Ext.data.JsonStore({""aa"":""aa""})}", sb.ToString());

    }

    [Test]

    public void WriteFloatingPointNumber()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      using (JsonWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.WriteStartArray();

        jsonWriter.WriteValue(0.0);

        jsonWriter.WriteValue(0f);

        jsonWriter.WriteValue(0.1);

        jsonWriter.WriteValue(1.0);

        jsonWriter.WriteValue(1.000001);

        jsonWriter.WriteValue(0.000001);

        jsonWriter.WriteValue(double.Epsilon);

        jsonWriter.WriteValue(double.PositiveInfinity);

        jsonWriter.WriteValue(double.NegativeInfinity);

        jsonWriter.WriteValue(double.NaN);

        jsonWriter.WriteValue(double.MaxValue);

        jsonWriter.WriteValue(double.MinValue);

        jsonWriter.WriteValue(float.PositiveInfinity);

        jsonWriter.WriteValue(float.NegativeInfinity);

        jsonWriter.WriteValue(float.NaN);

        jsonWriter.WriteEndArray();

      }

      Assert.AreEqual(@"[0.0,0.0,0.1,1.0,1.000001,1E-06,4.94065645841247E-324,Infinity,-Infinity,NaN,1.7976931348623157E+308,-1.7976931348623157E+308,Infinity,-Infinity,NaN]", sb.ToString());

    }

    [Test]

    [ExpectedException(typeof(JsonWriterException), ExpectedMessage = "No token to close.")]

    public void BadWriteEndArray()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      using (JsonWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.WriteStartArray();

        jsonWriter.WriteValue(0.0);

        jsonWriter.WriteEndArray();

        jsonWriter.WriteEndArray();

      }

    }

    [Test]

    [ExpectedException(typeof(ArgumentException), ExpectedMessage = @"Invalid JavaScript string quote character. Valid quote characters are ' and "".")]

    public void InvalidQuoteChar()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      using (JsonTextWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.Formatting = Formatting.Indented;

        jsonWriter.QuoteChar = '*';

      }

    }

    [Test]

    public void Indentation()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      using (JsonTextWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.Formatting = Formatting.Indented;

        Assert.AreEqual(Formatting.Indented, jsonWriter.Formatting);

        jsonWriter.Indentation = 5;

        Assert.AreEqual(5, jsonWriter.Indentation);

        jsonWriter.IndentChar = '_';

        Assert.AreEqual('_', jsonWriter.IndentChar);

        jsonWriter.QuoteName = true;

        Assert.AreEqual(true, jsonWriter.QuoteName);

        jsonWriter.QuoteChar = '\'';

        Assert.AreEqual('\'', jsonWriter.QuoteChar);

        jsonWriter.WriteStartObject();

        jsonWriter.WritePropertyName("propertyName");

        jsonWriter.WriteValue(double.NaN);

        jsonWriter.WriteEndObject();

      }

      string expected = @"{

_____'propertyName': NaN

}";

      string result = sb.ToString();

      Assert.AreEqual(expected, result);

    }

    [Test]

    public void WriteSingleBytes()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      string text = "Hello world.";

      byte[] data = Encoding.UTF8.GetBytes(text);

      using (JsonTextWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.Formatting = Formatting.Indented;

        Assert.AreEqual(Formatting.Indented, jsonWriter.Formatting);

        jsonWriter.WriteValue(data);

      }

      string expected = @"""SGVsbG8gd29ybGQu""";

      string result = sb.ToString();

      Assert.AreEqual(expected, result);

      byte[] d2 = Convert.FromBase64String(result.Trim('"'));

      Assert.AreEqual(text, Encoding.UTF8.GetString(d2, 0, d2.Length));

    }

    [Test]

    public void WriteBytesInArray()

    {

      StringBuilder sb = new StringBuilder();

      StringWriter sw = new StringWriter(sb);

      string text = "Hello world.";

      byte[] data = Encoding.UTF8.GetBytes(text);

      using (JsonTextWriter jsonWriter = new JsonTextWriter(sw))

      {

        jsonWriter.Formatting = Formatting.Indented;

        Assert.AreEqual(Formatting.Indented, jsonWriter.Formatting);

        jsonWriter.WriteStartArray();

        jsonWriter.WriteValue(data);

        jsonWriter.WriteValue(data);

        jsonWriter.WriteValue((object)data);

        jsonWriter.WriteValue((byte[])null);

        jsonWriter.WriteEndArray();

      }

      string expected = @"[

  ""SGVsbG8gd29ybGQu"",

  ""SGVsbG8gd29ybGQu"",

  ""SGVsbG8gd29ybGQu"",

  null

]";

      string result = sb.ToString();

      Assert.AreEqual(expected, result);

    }

  }

}