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// ***********************************************************************
// Copyright (c) 2012 Charlie Poole
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// ***********************************************************************
using System;
using System.Threading;
using NUnit.Framework.Internal.Commands;
using NUnit.Framework.Api;
namespace NUnit.Framework.Internal.WorkItems
{
/// <summary>
/// A CompositeWorkItem represents a test suite and
/// encapsulates the execution of the suite as well
/// as all its child tests.
/// </summary>
public class CompositeWorkItem : WorkItem
{
private TestSuite _suite;
private ITestFilter _childFilter;
#if CLR_2_0 || CLR_4_0
private System.Collections.Generic.Queue<WorkItem> _children = new System.Collections.Generic.Queue<WorkItem>();
#else
private System.Collections.Queue _children = new System.Collections.Queue();
#endif
private TestCommand _setupCommand;
private TestCommand _teardownCommand;
private CountdownEvent _childTestCountdown;
/// <summary>
/// Construct a CompositeWorkItem for executing a test suite
/// using a filter to select child tests.
/// </summary>
/// <param name="suite">The TestSuite to be executed</param>
/// <param name="context">The execution context in which to run the suite</param>
/// <param name="childFilter">A filter used to select child tests</param>
public CompositeWorkItem(TestSuite suite, TestExecutionContext context, ITestFilter childFilter)
: base(suite, context)
{
_suite = suite;
_setupCommand = suite.GetOneTimeSetUpCommand();
_teardownCommand = suite.GetOneTimeTearDownCommand();
_childFilter = childFilter;
}
/// <summary>
/// Method that actually performs the work. Overridden
/// in CompositeWorkItem to do setup, run all child
/// items and then do teardown.
/// </summary>
protected override void PerformWork()
{
// Assume success, since the result will be inconclusive
// if there is no setup method to run or if the
// context initialization fails.
Result.SetResult(ResultState.Success);
PerformOneTimeSetUp();
if (Result.ResultState.Status == TestStatus.Passed && _suite.HasChildren)
{
foreach (Test test in _suite.Tests)
if (_childFilter.Pass(test))
_children.Enqueue(CreateWorkItem(test, this.Context, _childFilter));
if (_children.Count > 0)
{
RunChildren();
return;
}
}
// Fall through in case there were no child tests to run.
// Otherwise, this is done in the completion event.
PerformOneTimeTearDown();
WorkItemComplete();
}
#region Helper Methods
private void PerformOneTimeSetUp()
{
try
{
_setupCommand.Execute(Context);
// SetUp may have changed some things
Context.UpdateContext();
}
catch (Exception ex)
{
if (ex is NUnitException || ex is System.Reflection.TargetInvocationException)
ex = ex.InnerException;
Result.RecordException(ex, FailureSite.SetUp);
}
}
private void RunChildren()
{
_childTestCountdown = new CountdownEvent(_children.Count);
while (_children.Count > 0)
{
WorkItem child = (WorkItem)_children.Dequeue();
child.Completed += new EventHandler(OnChildCompleted);
child.Execute();
}
}
private void PerformOneTimeTearDown()
{
TestExecutionContext.SetCurrentContext(Context);
_teardownCommand.Execute(Context);
}
private object _completionLock = new object();
private void OnChildCompleted(object sender, EventArgs e)
{
lock (_completionLock)
{
WorkItem childTask = sender as WorkItem;
if (childTask != null)
{
childTask.Completed -= new EventHandler(OnChildCompleted);
Result.AddResult(childTask.Result);
_childTestCountdown.Signal();
if (_childTestCountdown.CurrentCount == 0)
{
PerformOneTimeTearDown();
WorkItemComplete();
}
}
}
}
#endregion
}
}
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