How to compare two Json objects using C#

Question

I have two Json objects as below need to be compared. I am using Newtonsoft libraries for Json parsing.

string InstanceExpected = jsonExpected;
string InstanceAc         


        

Answer 1

One option is to deserialize the json strings into C# objects and compare them.

This approach requires more work comparing to using JToken.DeepEquals (as suggested by @JessedeWit), but has the advantage of giving better error messages if your tests fail (see screenshot below).

Your json string can be modelled into the following class:

public class Entity
{
    [JsonProperty("Name")]
    public string Name { get; set; }

    [JsonProperty("objectId")]
    public string ObjectId { get; set; }
}

In your test, deserialize the json strings into objects and compare them:

[TestFixture]
public class JsonTests
{
    [Test]
    public void JsonString_ShouldBeEqualAsExpected()
    {
        string jsonExpected = @"{ ""Name"": ""20181004164456"", ""objectId"": ""4ea9b00b-d601-44af-a990-3034af18fdb1%>"" }";
        string jsonActual = @"{ ""Name"": ""AAAAAAAAAAAA"", ""objectId"": ""4ea9b00b-d601-44af-a990-3034af18fdb1%>"" }";

        Entity expectedObject = JsonConvert.DeserializeObject(jsonExpected);
        Entity actualObject = JsonConvert.DeserializeObject(jsonActual);

        actualObject.Should().BeEquivalentTo(expectedObject);
    }
}

PS: I used NUnit and FluentAssertions in my test method. Running the test: