Simple Data Access in C#

using System;

using Microsoft.VisualStudio.TestTools.UnitTesting;

using Yap.Data.Client;


namespace Yap.Data.UnitTest
{
	[TestClass]
	public class FieldTestFixture
	{
		[TestMethod]
		[ExpectedException(typeof(ArgumentNullException))]
		public void Constructor_NameIsEmpty_ThrowArgumentNullException()
		{
			new Field(String.Empty, typeof(Int32));
		}

		[TestMethod]
		[ExpectedException(typeof(ArgumentNullException))]
		public void Constructor_TypeIsNull_ThrowArgumentNullException()
		{
			new Field("an field", null);
		}

		[TestMethod]
		public void Equals_OtherIsNull_ReturnFalse()
		{
			var field = new Field("an field", typeof(Int32));
			Assert.IsFalse(field.Equals(null), "Equals() with null should return false.");
		}

		[TestMethod]
		public void Equals_FullTest()
		{
			var one = new Field("an field", typeof(Int32));
			var another = new Field("an field", typeof(Int32));
			Assert.AreEqual(one, another, "Equals() with equal field should return true.");
			one = new Field("another field", typeof(Int32));
			Assert.AreNotEqual(one, another, "Equals() with not equal field should return false.");
		}

		[TestMethod]
		public void ToString__ShouldBeEqualToName()
		{
			var field = new Field("an field", typeof(Int32));
			Assert.AreEqual(field.Name, field.ToString(), "ToString() should be equal to Field.Name.");
		}

		[TestMethod]
		public void GetHashCode__ShouldBeEqualToNameGetHashCode()
		{
			var field = new Field("an field", typeof(Int32));
			Assert.AreEqual(field.Name.GetHashCode(), field.GetHashCode(), "GetHashCode() should be equal to Field.Name.GetHashCode().");
		}
	}
}