[Test] public void ExistsReportsExistenceOfItemMatchCriteria()
{
var sut = new CopyOnWriteList <T>(Samples);
Assert.IsFalse(sut.Exists(b => b.Equals(TestData <T> .M1)));
Assert.IsTrue(sut.Exists(b => b.Equals(TestData <T> .Zero)));
Assert.IsTrue(sut.Exists(b => b.Equals(TestData <T> .MakeData(SampleSize - 1))));
Assert.IsTrue(sut.Exists(b => b.Equals(TestData <T> .MakeData(SampleSize / 2))));
}
[Test] public void ExistsChokesOnNullMatchCriteria()
{
var sut = new CopyOnWriteList <T>();
Assert.Catch <ArgumentNullException>(() => sut.Exists(null));
}