I have a graphical CancelChanges () method used and called by ViewModel. I want to test this method, but we have a task inside. We use the task not to freeze the user interface. My test method must wait for the result of this task to verify the result.
The code:
public override void CancelChanges()
{
Task.Run(
async () =>
{
this.SelectedWorkflow = null;
AsyncResult<IncidentTypeModel> asyncResult = await this.Dataprovider.GetIncidentTypeByIdAsync(this.Incident.Id);
Utils.GetDispatcher().Invoke(
() =>
{
if (asyncResult.IsError)
{
WorkflowMessageBox.ShowException(
MessageHelper.ManageException(asyncResult.Exception));
}
else
{
this.Incident = asyncResult.Result;
this.Refreshdesigner();
this.HaveChanges = false;
}
});
});
}
And my testing method:
[TestMethod]
[TestCategory("ConfigTool")]
public void CancelChangesTest()
{
string storexaml = this._target.Incident.WorkflowXamlString;
this._target.Incident.WorkflowXamlString = "dsdfsdgfdsgdfgfd";
this._target.CancelChanges();
Assert.IsTrue(storexaml == this._target.Incident.WorkflowXamlString);
Assert.IsFalse(this._target.HaveChanges);
}
How can we make my test expect the result of a task?
Thank.
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