Newtonsoft.Json.Tests\Linq\JValueTests.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.Linq;

using System.Text;

using NUnit.Framework;

using Newtonsoft.Json.Linq;

namespace Newtonsoft.Json.Tests.Linq

{

  public class JValueTests : TestFixtureBase

  {

    [Test]

    public void ChangeValue()

    {

      JValue v = new JValue(true);

      Assert.AreEqual(true, v.Value);

      Assert.AreEqual(JTokenType.Boolean, v.Type);

      v.Value = "Pie";

      Assert.AreEqual("Pie", v.Value);

      Assert.AreEqual(JTokenType.String, v.Type);

      v.Value = null;

      Assert.AreEqual(null, v.Value);

      Assert.AreEqual(JTokenType.Null, v.Type);

      v.Value = (int?)null;

      Assert.AreEqual(null, v.Value);

      Assert.AreEqual(JTokenType.Null, v.Type);

      v.Value = "Pie";

      Assert.AreEqual("Pie", v.Value);

      Assert.AreEqual(JTokenType.String, v.Type);

      v.Value = DBNull.Value;

      Assert.AreEqual(DBNull.Value, v.Value);

      Assert.AreEqual(JTokenType.Null, v.Type);

      byte[] data = new byte[0];

      v.Value = data;

      Assert.AreEqual(data, v.Value);

      Assert.AreEqual(JTokenType.Bytes, v.Type);

      v.Value = StringComparison.OrdinalIgnoreCase;

      Assert.AreEqual(StringComparison.OrdinalIgnoreCase, v.Value);

      Assert.AreEqual(JTokenType.Integer, v.Type);

    }

    [Test]

    public void CreateComment()

    {

      JValue commentValue = JValue.CreateComment(null);

      Assert.AreEqual(null, commentValue.Value);

      Assert.AreEqual(JTokenType.Comment, commentValue.Type);

      commentValue.Value = "Comment";

      Assert.AreEqual("Comment", commentValue.Value);

      Assert.AreEqual(JTokenType.Comment, commentValue.Type);

    }

    [Test]

    public void CreateString()

    {

      JValue stringValue = JValue.CreateString(null);

      Assert.AreEqual(null, stringValue.Value);

      Assert.AreEqual(JTokenType.String, stringValue.Type);

    }

    [Test]

    [ExpectedException(typeof(InvalidOperationException), ExpectedMessage = "Cannot access child value on Newtonsoft.Json.Linq.JValue.")]

    public void Last()

    {

      JValue v = new JValue(true);

      JToken last = v.Last;

    }

    [Test]

    [ExpectedException(typeof(InvalidOperationException), ExpectedMessage = "Cannot access child value on Newtonsoft.Json.Linq.JValue.")]

    public void Children()

    {

      JValue v = new JValue(true);

      var c = v.Children();

    }

    [Test]

    [ExpectedException(typeof(InvalidOperationException), ExpectedMessage = "Cannot access child value on Newtonsoft.Json.Linq.JValue.")]

    public void First()

    {

      JValue v = new JValue(true);

      JToken first = v.First;

    }

    [Test]

    [ExpectedException(typeof(InvalidOperationException), ExpectedMessage = "Cannot access child value on Newtonsoft.Json.Linq.JValue.")]

    public void Item()

    {

      JValue v = new JValue(true);

      JToken first = v[0];

    }

    [Test]

    [ExpectedException(typeof(InvalidOperationException), ExpectedMessage = "Cannot access child value on Newtonsoft.Json.Linq.JValue.")]

    public void Values()

    {

      JValue v = new JValue(true);

      v.Values<int>();

    }

    [Test]

    [ExpectedException(typeof(InvalidOperationException), ExpectedMessage = "The parent is missing.")]

    public void RemoveParentNull()

    {

      JValue v = new JValue(true);

      v.Remove();

    }

    [Test]

    public void Root()

    {

      JValue v = new JValue(true);

      Assert.AreEqual(v, v.Root);

    }

    [Test]

    public void Previous()

    {

      JValue v = new JValue(true);

      Assert.IsNull(v.Previous);

    }

    [Test]

    public void Next()

    {

      JValue v = new JValue(true);

      Assert.IsNull(v.Next);

    }

    [Test]

    public void DeepEquals()

    {

      Assert.IsTrue(JToken.DeepEquals(new JValue(5L), new JValue(5)));

      Assert.IsFalse(JToken.DeepEquals(new JValue(5M), new JValue(5)));

      Assert.IsTrue(JToken.DeepEquals(new JValue((ulong)long.MaxValue), new JValue(long.MaxValue)));

    }

    [Test]

    public void HasValues()

    {

      Assert.IsFalse((new JValue(5L)).HasValues);

    }

    [Test]

    [ExpectedException(typeof(InvalidOperationException), ExpectedMessage = "Cannot set child value on Newtonsoft.Json.Linq.JValue.")]

    public void SetValue()

    {

      JToken t = new JValue(5L);

      t[0] = new JValue(3);

    }

    [Test]

    [ExpectedException(typeof(ArgumentException), ExpectedMessage = "Can not convert Null to Int32.")]

    public void CastNullValueToNonNullable()

    {

      JValue v = new JValue((object)null);

      int i = (int) v;

    }

  }

}