public void ShouldAppendLinks()
{
// Given
var chain = new Chain <string>("base");
// When
chain.Append("1");
chain.Append("2");
chain.Append("3");
// Then
chain.Current.ShouldBe("3");
}
public void ShouldRemoveLinks()
{
// Given
var chain = new Chain <string>("base");
var token1 = chain.Append("1");
var token2 = chain.Append("2");
var token3 = chain.Append("3");
// When
token3.Dispose();
chain.Current.ShouldBe("2");
token2.Dispose();
chain.Current.ShouldBe("1");
token1.Dispose();
chain.Current.ShouldBe("base");
token1.Dispose();
// Then
}
public void ShouldRemoveLink()
{
// Given
var chain = new Chain <string>("base");
var token = chain.Append("1");
// When
token.Dispose();
// Then
chain.Current.ShouldBe("base");
}
public void AppendEmptyTest()
{
const int v1 = 42;
const int v2 = 43;
var o = new Chain<int>(v1, v2);
Assert.AreEqual(2, o.Count());
var o2 = o.Append(Chain<int>.Empty);
Assert.AreSame(o, o2);
var o3 = o.Append(new Chain<int>());
Assert.AreSame(o, o3);
var o4 = Chain<int>.Empty.Append(o);
Assert.AreSame(o, o4);
var o5 = new Chain<int>().Append(o);
Assert.AreSame(o, o5);
}
public void AppendTest()
{
const int v1 = 42;
const int v2 = 43;
const int v3 = 44;
var v = new[] { v1, v2, v3 };
var o = new Chain<int>(v1);
Assert.AreEqual(1, o.Count());
o = o.Append(v2);
Assert.AreEqual(2, o.Count());
o = o.Append(v3);
Assert.AreEqual(3, o.Count());
Assert.AreEqual(o.Head, v1);
Assert.AreEqual(o.Tail.Head, v2);
Assert.AreEqual(o.Tail.Tail.Head, v3);
Assert.IsTrue(v.Zip(o, (a, b) => a == b).All(p => p));
}