WF单元测试系列4:测试Workflow
2010-10-01 08:19:36 来源:WEB开发网前面几篇介绍了如何对Activity进行状态测试,行为测试,及Mock Object Framework的使用。当然,仅仅测试Activity是不够的,我们最终还要对整个Workflow进行测试。这一篇就为大家讲一下如何对Workflow进行测试。
在上一篇的NewEmployeeWFLibrary工程里,添加一个名为StoreNewAcmeEmployee的顺序工作流。为工作流添加三个属性和一个事件:
Property
public string FirstName { get; set; }
public string LastName { get; set; }
public AcmeEmployee NewEmployee { get; set; }
我们设定这个工作流的功能是根据给定的FirstName和LastName生成一个AcmeEmployee对象。下面我们开始写测试代码。在测试工程中添加一个测试类ProvisionNewEmployee_WorkflowShould,代码如下:
ProvisionNewEmployee_WorkflowShould
[TestClass]
public class ProvisionNewEmployee_WorkflowShould
{
private AcmeEmployee _createAcmeEmployee;
private ManualWorkflowSchedulerService _manualScheduler;
private WorkflowRuntime _runtime;
[TestInitialize]
public void TestInitializer()
{
_manualScheduler = new ManualWorkflowSchedulerService();
_runtime = new WorkflowRuntime();
// Add the scheduler to the _runtime before it is started
_runtime.AddService(_manualScheduler);
// when the workflow completes, assign the output value to a test
// class member so it can be evaluated.
_runtime.WorkflowCompleted += ((o, e) =>
{
if (o == null) throw new
ArgumentNullException("o");
_createAcmeEmployee =
(AcmeEmployee)
e.OutputParameters["NewEmployee"];
});
// this event will fire if an exception occurs in the runtime.
_runtime.WorkflowTerminated += ((o, e) =>
{
// but throwing it again means the runtime will handle it
// in ServicesExceptionNotHandled
throw e.Exception;
});
// The WF runtime wants to manage exceptions here all by itself
// so we throw the expection again to ensure it gets into the
// test class itself
_runtime.ServicesExceptionNotHandled += ((o, e) => { throw e.Exception;
});
}
[TestMethod]
public void CreateAValidAcmeEmployee()
{
RunTheWorkflow(Mother.FIRST_NAME, Mother.LAST_NAME);
AcmeEmployeeAssert.AreEqualExceptForId(_createAcmeEmployee,
Mother.CreateNewAcmeEmployee());
}
[TestMethod]
[ExpectedException(typeof(ArgumentNullException))]
public void ThrowExceptionOnNullFirstName()
{
RunTheWorkflow(null, Mother.LAST_NAME);
}
[TestMethod]
[ExpectedException(typeof(ArgumentNullException))]
public void ThrowExceptionOnNullLastName()
{
RunTheWorkflow(Mother.FIRST_NAME, null);
}
private void RunTheWorkflow(string firstName, string lastName)
{
// Setup the input parameters
// The name of the argument here must match the
// name of the property on the workflow class
var args = new Dictionary<string, object>
{
{"FirstName", firstName},
{"LastName", lastName}
};
WorkflowInstance targetWorkflow =
_runtime.CreateWorkflow(typeof(ProvisionNewEmployee), args);
targetWorkflow.Start();
_manualScheduler.RunWorkflow(targetWorkflow.InstanceId);
}
}
- ››WF 4.0 beta1中的跟踪机制
- ››WF 4.0的建模风格:顺序和Flowchart
- ››WF4.0 Beta1之旅(5):规则引擎的变化
- ››WF 4.0 beta1活动概览(1):Procedural
- ››WF4.0 Beta1之旅(4):Bookmark的使用
- ››WF4.0 Beta1之旅:基本介绍
- ››WF4.0 Beta1之旅(2):异常处理
- ››WF4.0 Beta1之旅(3):全新的FlowChart
- ››WF 应用场景指南: SharePoint 与工作流(上)
- ››WF 应用场景指南: 展现流(Presentation Flow)
- ››WF单元测试系列1:测试基本的Activity
- ››WF单元测试系列2:简单测试Activity的行为
赞助商链接