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SimpleListTest.cs
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namespace Simple.Data.UnitTest
{
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using NUnit.Framework;
[TestFixture]
public class SimpleListTest
{
private IEnumerable<object> Strings(int count)
{
for (int i = 0; i < count; i++)
{
yield return i.ToString();
}
}
[Test]
public void ElementAtOrDefaultReturnsCorrectElement()
{
var list = new SimpleList(Strings(2));
Assert.AreEqual("0", list.ElementAtOrDefault(0));
Assert.AreEqual("1", list.ElementAtOrDefault(1));
}
[Test]
public void ElementAtOrDefaultReturnsNullForOutOfRange()
{
var list = new SimpleList(Strings(1));
Assert.IsNull(list.ElementAtOrDefault(2));
}
[Test]
public void ElementAtReturnsCorrectElement()
{
var list = new SimpleList(Strings(2));
Assert.AreEqual("0", list.ElementAt(0));
Assert.AreEqual("1", list.ElementAt(1));
}
[Test]
public void ElementAtThrowsForOutOfRange()
{
var list = new SimpleList(Strings(1));
Assert.Throws<ArgumentOutOfRangeException>(() => list.ElementAt(2));
}
[Test]
public void FirstReturnsFirstElement()
{
var list = new SimpleList(Strings(10));
Assert.AreEqual("0", list.First());
}
[Test]
public void FirstThrowsOnEmptyList()
{
var list = new SimpleList(Strings(0));
Assert.Throws<InvalidOperationException>(() => list.First());
}
[Test]
public void FirstOrDefaultReturnsFirstElement()
{
var list = new SimpleList(Strings(10));
Assert.AreEqual("0", list.FirstOrDefault());
}
[Test]
public void FirstOrDefaultReturnsNullOnEmptyList()
{
var list = new SimpleList(Strings(0));
Assert.IsNull(list.FirstOrDefault());
}
[Test]
public void LastReturnsLastElement()
{
var list = new SimpleList(Strings(10));
Assert.AreEqual("9", list.Last());
}
[Test]
public void LastThrowsOnEmptyList()
{
var list = new SimpleList(Strings(0));
Assert.Throws<InvalidOperationException>(() => list.Last());
}
[Test]
public void LastOrDefaultReturnsLastElement()
{
var list = new SimpleList(Strings(10));
Assert.AreEqual("9", list.LastOrDefault());
}
[Test]
public void LastOrDefaultReturnsNullOnEmptyList()
{
var list = new SimpleList(Strings(0));
Assert.IsNull(list.LastOrDefault());
}
[Test]
public void SingleReturnsSingleElement()
{
var list = new SimpleList(Strings(1));
Assert.AreEqual("0", list.Single());
}
[Test]
public void SingleThrowsOnEmptyList()
{
var list = new SimpleList(Strings(0));
Assert.Throws<InvalidOperationException>(() => list.Single());
}
[Test]
public void SingleThrowsOnListWithMoreThanOneElement()
{
var list = new SimpleList(Strings(2));
Assert.Throws<InvalidOperationException>(() => list.Single());
}
[Test]
public void SingleOrDefaultReturnsSingleElement()
{
var list = new SimpleList(Strings(1));
Assert.AreEqual("0", list.SingleOrDefault());
}
[Test]
public void SingleOrDefaultReturnsNullOnEmptyList()
{
var list = new SimpleList(Strings(0));
Assert.IsNull(list.SingleOrDefault());
}
[Test]
public void SingleOrDefaultThrowsOnListWithMoreThanOneElement()
{
var list = new SimpleList(Strings(2));
Assert.Throws<InvalidOperationException>(() => list.SingleOrDefault());
}
[Test]
public void SimpleListIsNotReadOnly()
{
var list = new SimpleList(Strings(0));
Assert.IsFalse(list.IsReadOnly);
}
[Test]
public void ConvertsToGenericList()
{
dynamic list = new SimpleList(Strings(1));
List<string> generic = list;
Assert.IsNotNull(generic);
Assert.AreEqual("0", generic[0]);
}
[Test]
public void ConvertsToNonGenericList()
{
dynamic list = new SimpleList(Strings(1));
ArrayList generic = list;
Assert.IsNotNull(generic);
Assert.AreEqual("0", generic[0]);
}
[Test]
public void ConvertsToHashSet()
{
dynamic list = new SimpleList(Strings(1));
HashSet<string> generic = list;
Assert.IsNotNull(generic);
Assert.AreEqual("0", generic.Single());
}
}
}