「Rhino.Mocksを使ってみた」のサンプルコード

IAlgorithm.cs

namespace Rhino.Mocks.Sample
{
    public interface IAlgorithm
    {
        string Run(int nuber);
    }
}

IAlgorithmTest.cs

using NUnit.Framework;
using Rhino.Mocks.Sample;

namespace Rhino.Mocks.Test
{
    public class IAlgorithmTest
    {
        [Test]
        public void Mockの確認()
        {
            var mock = MockRepository.GenerateMock<IAlgorithm>();

            mock.Expect(m => m.Run(1)).Return("1");
            mock.Expect(m => m.Run(2)).Return("2");
            mock.Expect(m => m.Run(3)).Return("Fizz");

            Assert.That(mock.Run(1), Is.EqualTo("1"));
            Assert.That(mock.Run(2), Is.EqualTo("2"));
            Assert.That(mock.Run(3), Is.EqualTo("Fizz"));
        }
    }
}

ListBuilder.cs

using System.Collections.Generic;
using System.Linq;

namespace Rhino.Mocks.Sample
{
    public class ListBuilder
    {
        private IAlgorithm algorithm;

        public ListBuilder(IAlgorithm algorithm)
        {
            this.algorithm = algorithm;
        }

        public List<string> Build(int start, int count)
        {
            return Enumerable.Range(start, count).Select(this.algorithm.Run).ToList();
        }
    }
}

ListBuilderTest.cs

using System.Collections.Generic;

using NUnit.Framework;
using Rhino.Mocks.Sample;

namespace Rhino.Mocks.Test
{
    public class ListBuilderTest
    {
        [Test]
        public void ListBuilderにいろんなAlgorithmを渡してみる()
        {
            var fizzbuzz = MockRepository.GenerateMock<IAlgorithm>();
            fizzbuzz.Expect(m => m.Run(1)).Return("1");
            fizzbuzz.Expect(m => m.Run(2)).Return("2");
            fizzbuzz.Expect(m => m.Run(3)).Return("Fizz");
            fizzbuzz.Expect(m => m.Run(4)).Return("4");
            fizzbuzz.Expect(m => m.Run(5)).Return("Buzz");
            var fizzbuzzBuilder = new ListBuilder(fizzbuzz);
            Assert.That(fizzbuzzBuilder.Build(1, 5),
                Is.EqualTo(new List<string>() { "1", "2", "Fizz", "4", "Buzz" }));

            var fibbuzz = MockRepository.GenerateMock<IAlgorithm>();
            fibbuzz.Expect(m => m.Run(1)).Return("1");
            fibbuzz.Expect(m => m.Run(2)).Return("1");
            fibbuzz.Expect(m => m.Run(3)).Return("2");
            fibbuzz.Expect(m => m.Run(4)).Return("Fizz");
            fibbuzz.Expect(m => m.Run(5)).Return("Buzz");
            var fibbuzzBuilder = new ListBuilder(fibbuzz);
            Assert.That(fibbuzzBuilder.Build(1, 5),
                Is.EqualTo(new List<string>() { "1", "1", "2", "Fizz", "Buzz" }));
        }
    }
}