public void ConstructionStartsSearch()
{
ClearAll();
CreateMockNavigation();
var twitterService = new Mock<ITwitterSearchProvider>();
var searchText = "To search for";
var viewModel = new TwitterViewModel(twitterService.Object);
viewModel.Init(searchText);
Assert.IsTrue(viewModel.IsSearching);
twitterService.Verify(x => x.StartAsyncSearch(It.Is<string>(s => s == searchText), It.IsAny<Action<IEnumerable<Tweet>>>(), It.IsAny<Action<Exception>>()), Times.Once());
}
public void ErrorredSearchCausesChangeInIsSearching()
{
ClearAll();
CreateMockNavigation();
var twitterService = new Mock<ITwitterSearchProvider>();
var searchText = "To search for";
Action<IEnumerable<Tweet>> storedSuccessAction = null;
Action<Exception> storedErrorAction = null;
twitterService.Setup(x => x.StartAsyncSearch(It.Is<string>(s => s == searchText), It.IsAny<Action<IEnumerable<Tweet>>>(), It.IsAny<Action<Exception>>()))
.Callback((string s, Action<IEnumerable<Tweet>> suc, Action<Exception> err) =>
{
storedSuccessAction = suc;
storedErrorAction = err;
});
var viewModel = new TwitterViewModel(twitterService.Object);
viewModel.Init(searchText);
var exception = new Exception("Just for fun");
storedErrorAction(exception);
Assert.IsFalse(viewModel.IsSearching);
}
public void SuccessfulSearchCausesListToBeBroadcast()
{
ClearAll();
CreateMockNavigation();
var twitterService = new Mock<ITwitterSearchProvider>();
var searchText = "To search for";
Action<IEnumerable<Tweet>> storedSuccessAction = null;
Action<Exception> storedErrorAction = null;
twitterService.Setup(x => x.StartAsyncSearch(It.Is<string>(s => s == searchText), It.IsAny<Action<IEnumerable<Tweet>>>(), It.IsAny<Action<Exception>>()))
.Callback((string s, Action<IEnumerable<Tweet>> suc, Action<Exception> err) =>
{
storedSuccessAction = suc;
storedErrorAction = err;
});
var viewModel = new TwitterViewModel(twitterService.Object);
viewModel.Init(searchText);
var list = new List<Tweet>()
{
new Tweet() {}
};
storedSuccessAction(list);
Assert.IsNotNull(viewModel.Tweets);
Assert.AreEqual(1, viewModel.Tweets.Count());
}