public void WhenContentWithoutMatchingResourceSet_SetsTemplateToNull()
{
var selector = new DataTemplateSelector();
var originalDataTemplate = new DataTemplate();
selector.ContentTemplate = originalDataTemplate;
selector.Content = new FirstContentType();
Assert.IsNull(selector.ContentTemplate);
}
public void WhenContentSet_SelectsTemplateFromResourceByName()
{
var selector = new DataTemplateSelector();
var dataTemplate = new DataTemplate();
Assert.AreNotSame(dataTemplate, selector.ContentTemplate);
selector.Resources.Add("FirstContentType", dataTemplate);
selector.Content = new FirstContentType();
Assert.AreSame(dataTemplate, selector.ContentTemplate);
}
public void WhenContentIsNull_ThenSetsTemplateToNull()
{
var selector = new DataTemplateSelector();
var originalDataTemplate = new DataTemplate();
selector.Content = new object();
selector.ContentTemplate = originalDataTemplate;
selector.Content = null;
Assert.IsNull(selector.ContentTemplate);
}
public void WhenChangingContentType_TemplateIsUpdatedBasedOnType()
{
var selector = new DataTemplateSelector();
var firstDataTemplate = new DataTemplate();
var secondDataTemplate = new DataTemplate();
selector.Resources.Add("FirstContentType", firstDataTemplate);
selector.Resources.Add("SecondContentType", secondDataTemplate);
selector.Content = new FirstContentType();
Assert.AreSame(firstDataTemplate, selector.ContentTemplate);
selector.Content = new SecondContentType();
Assert.AreSame(secondDataTemplate, selector.ContentTemplate);
}