public void ChainConcat_ToString()
{
var leftA = new[] { "a", "b", "c" };
var rightA = new[] { "c", "d" };
var chainedA = leftA.ChainConcat(rightA);
Assert.AreEqual(chainedA.GetType().ToString(), chainedA.ToString());
var leftB = new List <string>(leftA);
var rightB = new List <string>(rightA);
var chainedB = leftB.ChainConcat(rightB);
Assert.AreEqual(chainedB.GetType().ToString(), chainedB.ToString());
var leftC = new MyList1(leftA);
var rightC = new MyList1(rightA);
var chainedC = leftC.ChainConcat(rightC);
Assert.AreEqual("a,b,c,c,d", chainedC.ToString());
var leftD = new MyList2(leftA);
var rightD = new MyList2(rightA);
var chainedD = leftD.ChainConcat(rightD);
Assert.AreEqual("a, b, c, c, d", chainedD.ToString());
var leftE = new MyList3(leftA);
var rightE = new MyList3(rightA);
var chainedE = leftE.ChainConcat(rightE);
Assert.AreEqual("a|b|c,c|d", chainedE.ToString());
var chainedF = leftA.ChainConcat(chainedD);
Assert.AreEqual(chainedF.GetType().ToString(), chainedF.ToString());
var chainedG = chainedD.ChainConcat(rightA);
Assert.AreEqual(chainedG.GetType().ToString(), chainedG.ToString());
var chainedH = chainedC.ChainConcat(chainedD);
Assert.AreEqual("a,b,c,c,d, a, b, c, c, d", chainedH.ToString());
}
