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Catel - Part 4 of n: Unit testing with Catel

, 28 Jan 2011 CPOL
This article explains how to write unit tests for MVVM using Catel.
Catel-04_01-unittesting.zip
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Catel.Articles.04 - Unit testing
Models
Properties
Settings.settings
Resources
Images
add.png
delete.png
edit.png
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UI
Data
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ViewModels
Windows
Catel.Articles.04 - Unit testing.Test
Models
Properties
UI
ViewModels
Catel.Articles.Base
Data
Attributes
Properties
Settings.settings
Resources
Images
CatenaLogic.png
Preview.png
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ShowCode.png
UI
Controls
Helpers
ViewModels
Windows
Catel.Core
Attributes
ClassDiagrams
DataObjectBase.cd
SavableDataObjectBase.cd
Collections
Helpers
ComponentModel
Data
Attributes
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Diagnostics
Extensions
Helpers
Exceptions
Helpers
IO
Exceptions
IoC
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Commands
Interfaces
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EventArgs
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Reflection
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Catel.Examples.Models
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Catel.Examples.PersonApplication
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Catel.Examples.Silverlight
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Catel.Examples.Silverlight.Web
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Catel.FxCop
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Catel.Silverlight.Test.Web
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Catel.snk
Catel.Templates.WpfApplication
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Windows
Catel.Test
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Catel.vsmdi
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Local.testsettings
Settings.StyleCop
TraceAndTestImpact.testsettings
// --------------------------------------------------------------------------------------------------------------------
// <copyright file="PropertyData.cs" company="Catel development team">
//   Copyright (c) 2008 - 2011 Catel development team. All rights reserved.
// </copyright>
// <summary>
//   Object that contains all the property data that is used by the <see cref="DataObjectBase{T}" /> class.
// </summary>
// --------------------------------------------------------------------------------------------------------------------

using System;
using System.Xml.Serialization;

namespace Catel.Data
{
    /// <summary>
    /// Object that contains all the property data that is used by the <see cref="DataObjectBase{T}"/> class.
    /// </summary>
    public class PropertyData
    {
        #region Variables
        /// <summary>
        /// Type of the property.
        /// </summary>
#if !SILVERLIGHT
        [field: NonSerialized]
#endif
        private Type _type;
        #endregion

        #region Constructor & destructor
        /// <summary>
        /// Initializes a new instance of the <see cref="PropertyData"/> class.
        /// </summary>
        /// <param name="name">Name of the property.</param>
        /// <param name="type">Type of the property.</param>
        /// <param name="defaultValue">Default value of the property.</param>
        /// <param name="setParent">if set to <c>true</c>, the parent of the property will be set.</param>
        /// <param name="propertyChangedEventHandler">The property changed event handler.</param>
        /// <param name="isSerializable">if set to <c>true</c>, the property is serializable.</param>
        /// <param name="includeInSerialization">if set to <c>true</c>, the property should be included in the serialization.</param>
        /// <param name="isDataObjectBaseProperty">if set to <c>true</c>, the property is declared by the <see cref="DataObjectBase"/>.</param>
        internal PropertyData(string name, Type type, object defaultValue, bool setParent, EventHandler<PropertyChangedWithSenderEventArgs> propertyChangedEventHandler,
            bool isSerializable, bool includeInSerialization, bool isDataObjectBaseProperty)
        {
            Name = name;
            Type = type;
            DefaultValue = defaultValue;
            SetParent = setParent;
            PropertyChangedEventHandler = propertyChangedEventHandler;
            IsSerializable = isSerializable;
            IncludeInSerialization = includeInSerialization;
            IsDataObjectBaseProperty = isDataObjectBaseProperty;
        }
        #endregion

        #region Properties
        /// <summary>
        /// Gets the name of the property.
        /// </summary>
        public string Name { get; private set; }

        /// <summary>
        /// Gets the type of the property.
        /// </summary>
        [XmlIgnore]
        public Type Type
        {
            get { return _type ?? typeof(object); }
            private set { _type = value; }
        }

        /// <summary>
        /// Gets or sets the default value of the property.
        /// </summary>
        [XmlIgnore]
        private object DefaultValue { get; set; }

        /// <summary>
        /// Gets a value indicating whether to set the parent after creating or deserializing the property.
        /// </summary>
        /// <value><c>true</c> if the parent of the should be set after creating or deserializing the property; otherwise, <c>false</c>.</value>
        public bool SetParent { get; private set; }

        /// <summary>
        /// Gets a value indicating the property changed event handler.
        /// </summary>
        /// <value>The property changed event handler.</value>
        [XmlIgnore]
        internal EventHandler<PropertyChangedWithSenderEventArgs> PropertyChangedEventHandler { get; private set; }

        /// <summary>
        /// Gets a value indicating whether this property is serializable.
        /// </summary>
        /// <value>
        /// 	<c>true</c> if this property is serializable; otherwise, <c>false</c>.
        /// </value>
        [XmlIgnore]
        public bool IsSerializable { get; private set; }

        /// <summary>
        /// Gets a value indicating whether whether the property should be included in the serialization.
        /// </summary>
        /// <value>
        /// 	<c>true</c> if the property should be included in the serialization; otherwise, <c>false</c>.
        /// </value>
        [XmlIgnore]
        public bool IncludeInSerialization { get; private set; }

        /// <summary>
        /// Gets a value indicating whether the property is declared by the <see cref="DataObjectBase"/>.
        /// </summary>
        /// <value>
        /// 	<c>true</c> if the property is declared by the <see cref="DataObjectBase"/>; otherwise, <c>false</c>.
        /// </value>
        [XmlIgnore]
        public bool IsDataObjectBaseProperty { get; private set; }
        #endregion

        #region Methods
        /// <summary>
        /// Returns the default value of the property.
        /// </summary>
        /// <returns>Default value of the property.</returns>
        public object GetDefaultValue()
        {
            return DefaultValue;
        }

        /// <summary>
        /// Returns the typed default value of the property.
        /// </summary>
        /// <typeparam name="TValue">The type of the value.</typeparam>
        /// <returns>Default value of the property.</returns>
        public TValue GetDefaultValue<TValue>()
        {
            return ((DefaultValue != null) && (DefaultValue is TValue)) ? (TValue)DefaultValue : default(TValue);
        }
        #endregion
    }
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Geert van Horrik
Software Developer CatenaLogic
Netherlands Netherlands
I am Geert van Horrik, and I have studied Computer Science in the Netherlands.
 
I love to write software using .NET (especially the combination of WPF and C#). I am also the lead developer of Catel, an open-source application development framework for WPF, Silverlight, WP7 and WinRT with the focus on MVVM.
 
I have my own company since January 1st 2007, called CatenaLogic. This company develops commercial and non-commercial software.
 
To download (or buy) applications I have written, visit my website: http://www.catenalogic.com
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