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// ****************************************************************
// Copyright 2007, Charlie Poole
// This is free software licensed under the NUnit license. You may
// obtain a copy of the license at http://nunit.org/?p=license&r=2.4
// ****************************************************************
using System;
using System.Collections;
using System.Reflection;
namespace NUnit.Core.Extensibility
{
/// <summary>
/// TestCaseBuilderCollection is an ExtensionPoint for TestCaseBuilders
/// and implements the ITestCaseBuilder interface itself, passing calls
/// on to the individual builders.
///
/// The builders are added to the collection by inserting them at
/// the start, as to take precedence over those added earlier.
/// </summary>
public class TestCaseBuilderCollection : ExtensionPoint, ITestCaseBuilder
{
#region Constructor
public TestCaseBuilderCollection(IExtensionHost host)
: base("TestCaseBuilders", host) { }
#endregion
#region ITestCaseBuilder Members
/// <summary>
/// Examine the method and determine if it is suitable for
/// any TestCaseBuilder to use in building a TestCase
/// </summary>
/// <param name="method">The method to be used as a test case</param>
/// <returns>True if the type can be used to build a TestCase</returns>
public bool CanBuildFrom( MethodInfo method )
{
foreach( ITestCaseBuilder builder in extensions )
if ( builder.CanBuildFrom( method ) )
return true;
return false;
}
/// <summary>
/// Build a TestCase from the method provided.
/// </summary>
/// <param name="method">The method to be used</param>
/// <returns>A TestCase or null</returns>
public Test BuildFrom( MethodInfo method )
{
foreach( ITestCaseBuilder builder in extensions )
{
if ( builder.CanBuildFrom( method ) )
return builder.BuildFrom( method );
}
return null;
}
#endregion
#region ExtensionPoint Overrides
protected override bool ValidExtension(object extension)
{
return extension is ITestCaseBuilder;
}
#endregion
}
}
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