[Test] public void RemoveAllKeepListUnchangedWhenNoMatch()
{
var sut = new CopyOnWriteList <T>(Samples);
Assert.That(sut.RemoveAll(r => false), Is.EqualTo(0));
CollectionAssert.AreEqual(Samples, sut);
}
[Test] public void RemoveAllChokesOnNullMatchCriteria()
{
var sut = new CopyOnWriteList <T>(Samples);
var e = Assert.Catch <ArgumentNullException>(
() => sut.RemoveAll(null));
Assert.That(e.ParamName, Is.EqualTo("match"));
}
[Test] public void RemoveAllRemovesElementMatchsCriteria()
{
var sut = new CopyOnWriteList <T>(Samples);
IList <T> c = new List <T>();
for (int i = SampleSize - 1; i >= 0; i -= 2)
{
c.Add(TestData <T> .MakeData(i));
}
Assert.That(sut.RemoveAll(c.Contains), Is.EqualTo(c.Count));
Assert.That(sut.Count, Is.EqualTo(SampleSize - c.Count));
c = sut;
sut = new CopyOnWriteList <T>(Samples);
Assert.That(sut.RemoveAll(c.Contains), Is.EqualTo(c.Count));
Assert.That(sut.Count, Is.EqualTo(SampleSize - c.Count));
}