/V1/trunk/Source/StockTraderRI/StockTraderRI.Infrastructure.Tests/Converters/StringToNullableNumberConverterFixture.cs

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// Microsoft patterns & practices

// Composite Application Guidance for Windows Presentation Foundation

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

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using System;

using System.Text;

using System.Collections.Generic;

using System.Linq;

using Microsoft.VisualStudio.TestTools.UnitTesting;

using StockTraderRI.Infrastructure.Converters;



namespace StockTraderRI.Infrastructure.Tests.Converters

{

    /// <summary>

    /// Summary description for StringToNullableIntConverterFixture

    /// </summary>

    [TestClass]

    public class StringToNullableNumberConverterFixture

    {



        [TestMethod]

        public void ShouldConvertValidIntFromString()

        {

            StringToNullableNumberConverter converter = new StringToNullableNumberConverter();



            string source = "123";



            object result = converter.ConvertBack(source, typeof(int?), null, null);



            Assert.IsInstanceOfType(result, typeof(int));

            Assert.AreEqual<int>(123, (int)result);

        }



        [TestMethod]

        public void ShouldReturnOriginalValueForNonNullableIntFromString()

        {

            StringToNullableNumberConverter converter = new StringToNullableNumberConverter();



            string source = "123";



            object result = converter.ConvertBack(source, typeof(int), null, null);



            Assert.AreSame(source, result);

        }



        [TestMethod]

        public void ShouldReturnNullForInvalidInteger()

        {

            StringToNullableNumberConverter converter = new StringToNullableNumberConverter();



            string source = "xxx";



            object result = converter.ConvertBack(source, typeof(int?), null, null);



            Assert.IsNull(result);

        }



        [TestMethod]

        public void ShouldConvertValidDecimalFromString()

        {

            StringToNullableNumberConverter converter = new StringToNullableNumberConverter();



            string source = "10.05";

            

            object result = converter.ConvertBack(source, typeof(decimal?), null, null);



            Assert.IsInstanceOfType(result, typeof(decimal));

            Assert.AreEqual<decimal>(10.05M, (decimal)result);

        }



        [TestMethod]

        public void ShouldReturnOriginalValueForNonNullableDecimalTarget()

        {

            StringToNullableNumberConverter converter = new StringToNullableNumberConverter();



            string source = "10.05";



            object result = converter.ConvertBack(source, typeof(decimal), null, null);



            Assert.AreSame(source, result);

        }



        [TestMethod]

        public void ShouldReturnNullForInvalidDecimal()

        {

            StringToNullableNumberConverter converter = new StringToNullableNumberConverter();



            string source = "xxx";



            object result = converter.ConvertBack(source, typeof(decimal?), null, null);



            Assert.IsNull(result);

        }

	



    }

}