In FluentAssertions, you can exclude multiple properties from an object comparison using the Excluding method. Here's an example of how to exclude multiple properties in ShouldBeEquivalentTo():
using FluentAssertions;
using Xunit;
public class Person
{
public string FirstName { get; set; }
public string LastName { get; set; }
public int Age { get; set; }
public string Email { get; set; }
}
public class PersonTests
{
[Fact]
public void TestPersonEquality()
{
// Arrange
var expected = new Person
{
FirstName = "John",
LastName = "Doe",
Age = 30,
Email = "[email protected]"
};
var actual = new Person
{
FirstName = "John",
LastName = "Doe",
Age = 30,
Email = "[email protected]"
};
// Act
// Assert
actual.ShouldBeEquivalentTo(expected, options => options
.Excluding(p => p.Email)
.Excluding(p => p.Age)
);
}
}
In this example, we define a Person class with four properties. We define a PersonTests class with a TestPersonEquality test method that compares two Person objects using ShouldBeEquivalentTo().
We use the Excluding method to exclude the Age and Email properties from the comparison. The Excluding method takes a lambda expression that specifies the property to exclude.
By excluding multiple properties in this way, you can customize the comparison behavior to suit your needs.
In C#, you can use the JsonConverter attribute to specify a custom JSON converter for a class or property. This allows you to deserialize JSON to multiple properties in a custom way.
Here's an example of how to use the JsonConverter attribute to deserialize JSON to multiple properties:
public class MyObject
{
public string Property1 { get; set; }
public int Property2 { get; set; }
[JsonConverter(typeof(CustomConverter))]
public string Property3 { get; set; }
}
public class CustomConverter : JsonConverter
{
public override bool CanConvert(Type objectType)
{
return objectType == typeof(string);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
JObject obj = JObject.Load(reader);
MyObject result = new MyObject();
result.Property1 = (string)obj["property1"];
result.Property2 = (int)obj["property2"];
result.Property3 = (string)obj["property3"];
return result;
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
throw new NotImplementedException();
}
}
In this example, we define a MyObject class with three properties: Property1, Property2, and Property3. We use the JsonConverter attribute to specify a custom converter for Property3.
The CustomConverter class defines the custom deserialization logic. In the ReadJson method, we first load the JSON into a JObject and then manually extract the values of property1, property2, and property3 from the JObject. We then create a new MyObject instance and set its properties to the extracted values.
To use the custom converter, you can deserialize JSON using the JsonConvert.DeserializeObject method:
string json = "{\"property1\":\"value1\",\"property2\":123,\"property3\":\"value3\"}";
MyObject obj = JsonConvert.DeserializeObject<MyObject>(json);
In this example, we pass the JSON string and the MyObject type to the JsonConvert.DeserializeObject method. The custom converter is automatically used to deserialize the Property3 value. The Property1 and Property2 values are deserialized using the default JSON serializer.
With this code, you can deserialize JSON to multiple properties in a custom way using the JsonConverter attribute.
In ASP.NET Web API, you can use the Bind attribute to exclude certain properties from model binding. Here's an example:
public IHttpActionResult PostItem([Bind(Exclude = "Id, CreatedAt")] Item item)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
// Save the item to the database
return CreatedAtRoute("DefaultApi", new { id = item.Id }, item);
}
In this example, the Bind attribute is applied to the item parameter of the PostItem method. The Exclude parameter specifies a comma-separated list of property names that should be excluded from model binding. In this case, the Id and CreatedAt properties are excluded from binding.
When the Bind attribute is applied to a parameter, only the properties that are explicitly included or not excluded will be included in the model binding process. Any excluded properties will be set to their default values.
Note that the Bind attribute is part of the System.Web.Mvc namespace, so you may need to add a reference to the System.Web.Mvc assembly in order to use it in your Web API project. Alternatively, you can install the Microsoft.AspNet.WebApi.Core NuGet package, which includes a version of the Bind attribute that is compatible with ASP.NET Web API.