public async Task ShouldNotShowUnfilledItemsOnTap()
{
var navigation = Navigation;
navigation.Setup(n => n.Navigate <StoryViewModel, IStory>(It.IsAny <IStory>(), It.IsAny <MvxBundle>(), It.IsAny <CancellationToken>()))
.ReturnsAsync(true)
.Verifiable();
var news = News;
news.Setup(n => n.GetStoryListAsync(It.IsAny <StoryKind>()))
.ReturnsAsync(new List <int> {
99
});
var sut = new MockNewsViewModel(navigation.Object, Messenger.Object, news.Object, Reachability.Object, Features.Object, Browser.Object, Dialog.Object);
await sut.Initialize();
sut.ViewCreated();
sut.ShowStoryCommand.TryExecute(sut.Stories[0]);
Assert.False(sut.ShowStoryCommand.CanExecute(sut.Stories[0]));
navigation.Verify(n => n.Navigate <StoryViewModel, IStory>(It.IsAny <IStory>(), It.IsAny <MvxBundle>(), It.IsAny <CancellationToken>()), Times.Never);
}
public async Task ShouldPurgeAndReloadItemsOnRefresh()
{
var items = Enumerable.Range(0, 20).ToList();
var news = News;
news.Setup(n => n.GetStoryListAsync(It.IsAny <StoryKind>()))
// ReSharper disable once AccessToModifiedClosure
.ReturnsAsync(() => items)
.Verifiable();
var sut = new MockNewsViewModel(Navigation.Object, Messenger.Object, news.Object, Reachability.Object, Features.Object, Browser.Object, Dialog.Object);
await sut.Initialize();
sut.ViewCreated();
items = Enumerable.Range(0, 19).ToList();
sut.RefreshCommand.TryExecute();
var ids = sut.Stories.Select(x => x.Id).ToList();
Assert.All(sut.Stories, vm => Assert.Contains(vm.Id, items));
Assert.All(items, item => Assert.Contains(item, ids));
Assert.DoesNotContain(sut.Stories, vm => vm.Id == 19);
news.Verify(n => n.GetStoryListAsync(It.IsAny <StoryKind>()), Times.Exactly(2));
}
public async Task TappingAnItemShowsItInExternalBrowser()
{
var item = new Item
{
Id = 99,
Type = ItemType.Story,
Url = "https://kipters.net"
};
var navigation = Navigation;
navigation.Setup(n => n.Navigate <StoryViewModel, IStory>(item, It.IsAny <IMvxBundle>(), It.IsAny <CancellationToken>()))
.ReturnsAsync(true);
var news = News;
news.Setup(n => n.GetStoryListAsync(It.IsAny <StoryKind>()))
.ReturnsAsync(new List <int> {
item.Id
});
Action <NewsItemMessage> callback = null;
var messenger = new Mock <IMvxMessenger>();
messenger.Setup(m => m.Subscribe(It.IsAny <Action <NewsItemMessage> >(), It.IsAny <MvxReference>(), It.IsAny <string>()))
.Callback((Action <NewsItemMessage> action, MvxReference mvxref, string tag) => callback = action)
.Returns(new MvxSubscriptionToken(Guid.NewGuid(), () => { }));
var features = Features;
features.Setup(f => f.IsEnabled(F.OpenStoryInCustomBrowser))
.Returns(false);
var browser = Browser;
string actualUrl = null;
browser.Setup(b => b.ShowInBrowserAsync(It.IsAny <Uri>(), true))
.Callback((Uri u, bool _) => actualUrl = u.OriginalString)
.ReturnsAsync(true)
.Verifiable();
var sut = new MockNewsViewModel(navigation.Object, messenger.Object, news.Object, Reachability.Object, features.Object, Browser.Object, Dialog.Object);
await sut.Initialize();
sut.ViewCreated();
callback(new NewsItemMessage(news.Object, item));
sut.ShowStoryCommand.TryExecute(sut.Stories[0]);
browser.Verify();
Assert.Same(item.Url, actualUrl);
}
public void ShowSettingsCommandNavigatesToSettings()
{
var navigation = Navigation;
navigation
.Setup(n => n.Navigate <SettingsViewModel>(null, default))
.ReturnsAsync(true)
.Verifiable();
var sut = new MockNewsViewModel(navigation.Object, Messenger.Object, News.Object, Reachability.Object, Features.Object, Browser.Object, Dialog.Object);
sut.ShowSettingsCommand.TryExecute();
navigation.Verify();
}
public async Task TappingAnItemShowsItInCustomBrowser()
{
var item = new Item {
Id = 99, Type = ItemType.Story
};
IStory paramItem = null;
var navigation = Navigation;
navigation.Setup(n => n.Navigate <StoryViewModel, IStory>(item, It.IsAny <IMvxBundle>(), It.IsAny <CancellationToken>()))
.Callback((IStory param, IMvxBundle bundle, CancellationToken token) => paramItem = param)
.ReturnsAsync(true)
.Verifiable();
var news = News;
news.Setup(n => n.GetStoryListAsync(It.IsAny <StoryKind>()))
.ReturnsAsync(new List <int> {
item.Id
});
Action <NewsItemMessage> callback = null;
var messenger = new Mock <IMvxMessenger>();
messenger.Setup(m => m.Subscribe(It.IsAny <Action <NewsItemMessage> >(), It.IsAny <MvxReference>(), It.IsAny <string>()))
.Callback((Action <NewsItemMessage> action, MvxReference mvxref, string tag) => callback = action)
.Returns(new MvxSubscriptionToken(Guid.NewGuid(), () => { }));
var features = Features;
features.Setup(f => f.IsEnabled(F.OpenStoryInCustomBrowser))
.Returns(true);
var sut = new MockNewsViewModel(navigation.Object, messenger.Object, news.Object, Reachability.Object, features.Object, Browser.Object, Dialog.Object);
await sut.Initialize();
sut.ViewCreated();
callback(new NewsItemMessage(news.Object, item));
sut.ShowStoryCommand.TryExecute(sut.Stories[0]);
navigation.Verify();
Assert.Same(item, paramItem);
}
public async Task ShowErrorMessageIfFetchFails()
{
var news = News;
news.Setup(n => n.GetStoryListAsync(It.IsAny <StoryKind>()))
.Throws <Exception>()
.Verifiable();
var sut = new MockNewsViewModel(Navigation.Object, Messenger.Object, news.Object, Reachability.Object, Features.Object, Browser.Object, Dialog.Object);
await sut.Initialize();
sut.ViewCreated();
news.Verify(n => n.GetStoryListAsync(It.IsAny <StoryKind>()), Times.Once);
Assert.True(sut.LoadingTask.IsFaulted);
Assert.False(string.IsNullOrWhiteSpace(sut.LoadingTask.ErrorMessage));
}
public async Task ShowErrorMessageIfNetworkIsDown()
{
var reachability = new Mock <IReachabilityService>();
reachability.Setup(r => r.IsConnectionAvailable)
.Returns(false)
.Verifiable();
var sut = new MockNewsViewModel(Navigation.Object, Messenger.Object, News.Object, reachability.Object, Features.Object, Browser.Object, Dialog.Object);
await sut.Initialize();
sut.ViewCreated();
reachability.VerifyGet(r => r.IsConnectionAvailable, Times.Once);
Assert.True(sut.LoadingTask.IsCompleted);
Assert.False(sut.LoadingTask.IsNotCompleted);
}
public async Task DontRequestNewsIfNetworkIsDown()
{
var reachability = new Mock <IReachabilityService>();
reachability.Setup(r => r.IsConnectionAvailable)
.Returns(false);
var news = News;
news.Setup(n => n.GetStoryListAsync(It.IsAny <StoryKind>()))
.ReturnsAsync(Enumerable.Range(0, 20).ToList())
.Verifiable();
var sut = new MockNewsViewModel(Navigation.Object, Messenger.Object, news.Object, reachability.Object, Features.Object, Browser.Object, Dialog.Object);
await sut.Initialize();
sut.ViewCreated();
news.Verify(n => n.GetStoryListAsync(It.IsAny <StoryKind>()), Times.Never);
}
public async Task FetchTheRightKindOfStories(StoryKind storyKind)
{
var items = Enumerable.Range(0, 20).ToList();
var news = News;
var actualStoryKind = StoryKind.Best;
news.Setup(n => n.GetStoryListAsync(It.IsAny <StoryKind>()))
.Callback((StoryKind sk) => actualStoryKind = sk)
.ReturnsAsync(items)
.Verifiable();
var sut = new MockNewsViewModel(Navigation.Object, Messenger.Object, news.Object, Reachability.Object, Features.Object, Browser.Object, Dialog.Object);
sut.SetStoryKind(storyKind);
await sut.Initialize();
sut.ViewCreated();
Assert.Equal(storyKind, actualStoryKind);
news.Verify(n => n.GetStoryListAsync(storyKind), Times.Once);
}
public async Task PrepareStoriesWithUnfilledItems()
{
var items = Enumerable.Range(0, 20).ToList();
var news = News;
news.Setup(n => n.GetStoryListAsync(It.IsAny <StoryKind>()))
.ReturnsAsync(items)
.Verifiable();
var sut = new MockNewsViewModel(Navigation.Object, Messenger.Object, news.Object, Reachability.Object, Features.Object, Browser.Object, Dialog.Object);
await sut.Initialize();
sut.ViewCreated();
var ids = sut.Stories.Select(x => x.Id).ToList();
Assert.All(sut.Stories, vm => Assert.Contains(vm.Id, items));
Assert.All(items, item => Assert.Contains(item, ids));
Assert.True(sut.LoadingTask.IsCompleted);
news.Verify(n => n.GetStoryListAsync(It.IsAny <StoryKind>()), Times.Once);
}
public async Task FillItemsAsTheyCome()
{
Action <NewsItemMessage> callback = null;
var messenger = new Mock <IMvxMessenger>();
messenger.Setup(m => m.Subscribe(It.IsAny <Action <NewsItemMessage> >(), It.IsAny <MvxReference>(), It.IsAny <string>()))
.Callback((Action <NewsItemMessage> action, MvxReference mvxref, string tag) => callback = action)
.Returns(new MvxSubscriptionToken(Guid.NewGuid(), () => { }))
.Verifiable();
var items = Enumerable.Range(0, 20).ToList();
var news = News;
news.Setup(n => n.GetStoryListAsync(It.IsAny <StoryKind>()))
.ReturnsAsync(items)
.Verifiable();
var sut = new MockNewsViewModel(Navigation.Object, messenger.Object, news.Object, Reachability.Object, Features.Object, Browser.Object, Dialog.Object);
await sut.Initialize();
sut.ViewCreated();
messenger.Verify(m => m.Subscribe(It.IsAny <Action <NewsItemMessage> >(), It.IsAny <MvxReference>(), It.IsAny <string>()), Times.Once);
news.Verify(n => n.GetStoryListAsync(It.IsAny <StoryKind>()), Times.Once);
Assert.True(sut.LoadingTask.IsCompleted);
Assert.NotNull(callback);
foreach (var item in items)
{
var story = new Item {
Id = item, Title = $"Item {item}"
};
callback(new NewsItemMessage(news.Object, story));
}
Assert.All(sut.Stories, vm => Assert.Equal($"Item {vm.Id}", vm.Title));
}
