Railway Oriented Programming Library and DDD patterns
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$ dotnet add package Mahamudra.CoreReadme
Mahamudra.Core
A simple package that implements the Railway Oriented Programming, a powerful Functional Programming pattern.
Usage
public static Result<Person, string> CheckName(Result<Person, string> person)
{
if (string.IsNullOrWhiteSpace(person.Value.Name))
return new Failure<Person, string>("Name should not be blank.");
else
return new Success<Person, string>(person.Value);
}
[TestMethod]
public void Bind_ShouldFailValidateAge_True()
{
var result = person2
.Bind(Validation.CheckName)
.Bind(Validation.CheckEmail)
.Bind(Validation.CheckAge);
Assert.IsTrue(result.Messages.Contains("The age should be not inferior than 18."));
}
Test
public class Success
{
private Result<Person, string> person;
[TestInitialize]
public void Init()
{
person = new Success<Person, string>(new Person
{
Email = "",
Name = "Pippo",
Age = 120
});
}
[TestMethod]
public void Success_ShouldReturnSuccessFromResult_True()
{
Assert.IsTrue(person is Success<Person, string>);
}
}
public class Failure
{
private Result<Person, string> error;
[TestInitialize]
public void Init()
{
error = new Failure<Person, string>("This is an error!");
}
[TestMethod]
public void Failure_ShouldReturnFailureFromResult_True()
{
Assert.IsTrue(error is Failure<Person, string>);
}
}