/V4/Quickstarts/MVVM/MVVM.Test/Model/OpenQuestionFixture.cs

//===================================================================================

// Microsoft patterns & practices

// Composite Application Guidance for Windows Presentation Foundation and Silverlight

//===================================================================================

// Copyright (c) Microsoft Corporation.  All rights reserved.

// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY

// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT

// LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND

// FITNESS FOR A PARTICULAR PURPOSE.

//===================================================================================

// The example companies, organizations, products, domain names,

// e-mail addresses, logos, people, places, and events depicted

// herein are fictitious.  No association with any real company,

// organization, product, domain name, email address, logo, person,

// places, or events is intended or should be inferred.

//===================================================================================

using System.ComponentModel;

using System.Linq;

using MVVM.Model;

using Microsoft.VisualStudio.TestTools.UnitTesting;



namespace MVVM.Test.Model

{

    [TestClass]

    public class OpenQuestionFixture

    {

        [TestMethod]

        public void WhenQuestionIsNew_ThenItIsNotComplete()

        {

            var question = new OpenQuestion { MaxLength = 10 };

            Assert.IsFalse(question.IsComplete);

        }



        [TestMethod]

        public void WhenQuestionIsNew_ThenTemplateValuesAreCopied()

        {

            var question = new OpenQuestion { MaxLength = 10 };

            Assert.AreEqual(10, question.MaxLength);

        }



        [TestMethod]

        public void WhenQuestionHasInvalidValue_ThenItIsNotComplete()

        {

            var question = new OpenQuestion { MaxLength = 10 };

            question.Response = "aaaaaaaaaaaaaaaaaaaaaaaaa";



            Assert.IsFalse(question.IsComplete);

        }



        [TestMethod]

        public void WhenQuestionHasEmptyValue_ThenItIsNotComplete()

        {

            var question = new OpenQuestion { MaxLength = 10 };

            question.Response = "";



            Assert.IsFalse(question.IsComplete);

        }



        [TestMethod]

        public void WhenQuestionHasValidValue_ThenItIsComplete()

        {

            var question = new OpenQuestion { MaxLength = 10 };

            question.Response = "aaaa";



            Assert.IsTrue(question.IsComplete);

        }



        [TestMethod]

        public void WhenResponseLengthExceedsMaxLength_ThenIndicatesErrorOnResponse()

        {

            var question = new OpenQuestion { MaxLength = 10 };

            var notifyErrorInfo = (INotifyDataErrorInfo)question;



            question.Response = "ThisIsLongerThanTenCharacters";



            Assert.IsTrue(notifyErrorInfo.GetErrors("Response").Cast<string>().Any());

        }



        [TestMethod]

        public void WhenSettingResponseToNull_ThenIndicatesErrorOnResponse()

        {

            var question = new OpenQuestion { MaxLength = 10 };

            var notifyErrorInfo = (INotifyDataErrorInfo)question;



            question.Response = "valid";

            Assert.IsFalse(notifyErrorInfo.GetErrors("Response").Cast<string>().Any());



            question.Response = null;

            Assert.IsTrue(notifyErrorInfo.GetErrors("Response").Cast<string>().Any());

        }

    }

}