public void WhenGetEnumerator_ReturnsResults()
{
var source = new[] { new object(), new object(), new object() };
var next = new Mock <IChainedEnumerator <object> >();
var wrapper = new ChainedEnumeratorWrapper <object>(source, next.Object);
wrapper.ToArray().ShouldBe(source);
}
public void WhenEnumerating_CurrentMatchesSource()
{
var source = new object[] { 1, 2, 3, 4 }.AsEnumerable().GetEnumerator();
var next = new Mock <IChainedEnumerator <object> >();
var wrapper = new ChainedEnumeratorWrapper <object>(source, next.Object);
wrapper.MoveNext();
source.Current.ShouldBe(wrapper.Current);
}
public void WhenEnumerating_ShouldReturnTrueUntilNoMoreItems()
{
var source = new object[] { 1, 2, 3 };
var next = new Mock <IChainedEnumerator <object> >();
var wrapper = new ChainedEnumeratorWrapper <object>(source, next.Object);
wrapper.MoveNext().ShouldBeTrue();
wrapper.MoveNext().ShouldBeTrue();
wrapper.MoveNext().ShouldBeTrue();
wrapper.MoveNext().ShouldBeFalse();
}
public void WhenEnumerating_NoMoreItemsShouldMarkNextAsFinished()
{
var source = new object[] { 1, 2, 3 };
var next = new Mock <IChainedEnumerator <object> >();
next.Setup(x => x.AddItem(It.IsAny <object>()));
next.Setup(x => x.MarkAsFinished());
var wrapper = new ChainedEnumeratorWrapper <object>(source, next.Object);
wrapper.MoveNext();
wrapper.MoveNext();
wrapper.MoveNext();
wrapper.MoveNext();
next.Verify(x => x.AddItem(It.IsAny <object>()), Times.Exactly(3));
next.Verify(x => x.MarkAsFinished(), Times.Once);
}
public void WhenEnumerating_ResetShouldResetNext()
{
var source = new Mock <IEnumerator <object> >();
source.Setup(x => x.MoveNext()).Returns(true);
source.Setup(x => x.Reset());
var next = new Mock <IChainedEnumerator <object> >();
next.Setup(x => x.AddItem(It.IsAny <object>()));
next.Setup(x => x.Reset());
var wrapper = new ChainedEnumeratorWrapper <object>(source.Object, next.Object);
wrapper.MoveNext();
wrapper.MoveNext();
wrapper.MoveNext();
wrapper.Reset();
next.Verify(x => x.AddItem(It.IsAny <object>()), Times.Exactly(3));
next.Verify(x => x.Reset(), Times.Once);
}