public async Task OnEnterAsyncShouldRaiseEvent(MoodType moodType, string personName, string protagonist)
{
var isProtagonist = personName == protagonist;
var context = A.Dummy <INavigationContext>();
context.State.PersonName = personName;
context.State.ProtagonistName = protagonist;
context.State.MoodType = null;
var invoker = new TestInvoker(context);
var sut = new MoodNode(moodType);
var ret = await sut.EnterAsync(context);
ret.Should().BeNull();
invoker.ShouldContainSingle <IMoodChangeEvent>(
i => i.Should().BeEquivalentTo(new
{
MoodType = moodType,
PersonName = personName,
IsProtagonist = isProtagonist
})
);
}
public async Task OnEnterShouldUpdateState(MoodType moodType)
{
var context = A.Dummy <INavigationContext>();
context.State.MoodType = null;
var sut = new MoodNode(moodType);
await sut.EnterAsync(context);
context.State.MoodType.Should().Be(moodType);
}
public async Task ShouldNotRaiseEventForNomalMoodWhenContextMoodIsNull()
{
var context = A.Dummy <INavigationContext>();
context.State.MoodType = null;
var invoker = new TestInvoker(context);
var sut = new MoodNode(MoodType.Normal);
var ret = await sut.EnterAsync(context);
ret.Should().BeNull();
invoker.Count.Should().Be(0);
}
public async Task OnEnterShouldNotRaiseEventIfMoodWasNotChanged()
{
var context = A.Dummy <INavigationContext>();
context.State.MoodType = MoodType.Happy;
var invoker = new TestInvoker(context);
var sut = new MoodNode(MoodType.Happy);
var ret = await sut.EnterAsync(context);
ret.Should().Be(MoodType.Happy);
invoker.Count.Should().Be(0);
}
public async Task OnEnterShouldReturnPreviousMood()
{
var context = A.Dummy <INavigationContext>();
context.State.MoodType = MoodType.Surprised;
context.State.PersonName = "abc";
var invoker = new TestInvoker(context);
var sut = new MoodNode(MoodType.Happy);
var ret = await sut.EnterAsync(context);
ret.Should().Be(MoodType.Surprised);
invoker.ShouldContainSingle <IMoodChangeEvent>(
i => i.Should().BeEquivalentTo(new
{
MoodType = MoodType.Happy,
PersonName = "abc",
IsProtagonist = false
})
);
}
public async Task ShouldRaiseEventWithStateArg(MoodType moodType)
{
var context = A.Dummy <INavigationContext>();
context.State.PersonName = "alpha";
context.State.ProtagonistName = "alpha";
context.State.MoodType = MoodType.Happy;
var invoker = new TestInvoker(context);
var sut = new MoodNode(MoodType.Happy);
await sut.EnterAsync(context, moodType);
invoker.ShouldContainSingle <IMoodChangeEvent>(
i => i.Should().BeEquivalentTo(new
{
MoodType = moodType,
PersonName = "alpha",
IsProtagonist = true
})
);
}