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AnonymousValueFixture.cs
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AnonymousValueFixture.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using Ploeh.AutoFixture;
using TestStack.Dossier.Suppliers;
namespace TestStack.Dossier
{
/// <summary>
/// Allows you to create extension methods to generate anonymous values and to set up
/// conventions for automatic generation of anonymous values based on property expressions.
/// </summary>
public class AnonymousValueFixture
{
static AnonymousValueFixture()
{
GlobalValueSuppliers = new List<IAnonymousValueSupplier>();
DefaultValueSuppliers = new IAnonymousValueSupplier[]
{
new DefaultEmailValueSupplier(),
new DefaultFirstNameValueSupplier(),
new DefaultLastNameValueSupplier(),
new DefaultStringValueSupplier(),
new DefaultValueTypeValueSupplier(),
new DefaultValueSupplier()
};
}
/// <summary>
/// Default constructor.
/// </summary>
public AnonymousValueFixture()
{
LocalValueSuppliers = new List<IAnonymousValueSupplier>();
Fixture = new Fixture();
Bag = new NullingExpandoObject();
RegexGenerator = new RegularExpressionGenerator();
}
/// <summary>
/// An AutoFixture RegularExpressionGenerator instance that can be used to generate
/// strings matching a regex pattern.
/// </summary>
public RegularExpressionGenerator RegexGenerator { get; private set; }
/// <summary>
/// An AutoFixture Fixture instance that is scoped to this anonymous value fixture
/// and can be used to generate anonymous values using AutoFixture.
/// </summary>
public Fixture Fixture { get; private set; }
/// <summary>
/// Dynamic bag of objects that can be used by equivalence classes / anonymous value suppliers to store state.
/// </summary>
public dynamic Bag { get; private set; }
/// <summary>
/// Ordered, immutable collection of default anonymous value suppliers to interrogate when automatically generating an anonymous value.
/// These have the lowest priority and are a fallback if there are no local or global value suppliers that apply.
/// </summary>
public static IEnumerable<IAnonymousValueSupplier> DefaultValueSuppliers { get; private set; }
/// <summary>
/// Ordered, mutable collection of global anonymous value suppliers to interrogate when automatically generating an anonymous value.
/// These have a higher priority than the defaut value suppliers, but a lower priority than the local value suppliers.
/// </summary>
public static ICollection<IAnonymousValueSupplier> GlobalValueSuppliers { get; private set; }
/// <summary>
/// Ordered, mutable collection of fixture-specific anonymous value suppliers to interrogate when automatically generating an anonymous value.
/// These have the highest priority.
/// </summary>
public ICollection<IAnonymousValueSupplier> LocalValueSuppliers { get; private set; }
/// <summary>
/// Automatically generate an anonymous value for the given property expression.
/// </summary>
/// <typeparam name="TObject">The type of the parent object of the property</typeparam>
/// <typeparam name="T">The type of the property</typeparam>
/// <param name="property">The expression identifying the property</param>
/// <returns>The anonymous value, taking into account any registered conventions</returns>
public T Get<TObject, T>(Expression<Func<TObject, T>> property)
{
var propertyName = Reflector.GetPropertyNameFor(property);
var valueSupplier = LocalValueSuppliers
.Concat(GlobalValueSuppliers)
.Concat(DefaultValueSuppliers)
.First(s => s.CanSupplyValue(typeof(T), propertyName));
return valueSupplier.GenerateAnonymousValue<TObject, T>(this, propertyName);
}
/// <summary>
/// Automatically generate an anonymous value for the given property expression.
/// </summary>
/// <param name="type">The type of the property</param>
/// <param name="propertyName">The name of the property</param>
/// <returns>The anonymous value, taking into account any registered conventions</returns>
public object Get(Type type, string propertyName)
{
var valueSupplier = LocalValueSuppliers
.Concat(GlobalValueSuppliers)
.Concat(DefaultValueSuppliers)
.First(s => s.CanSupplyValue(type,propertyName));
return valueSupplier.GenerateAnonymousValue(this, type, propertyName);
}
}
}