public void TestContains_ArgNull()
{
var target = new CombinedDisposables();
new Action(() => target.Contains(null)).Should().Throw <ArgumentNullException>();
}
public void TestContains()
{
var item1 = new Mock <IDisposable>();
var item2 = new Mock <IDisposable>();
var item3 = new Mock <IDisposable>();
var item4 = new Mock <IDisposable>();
var item5 = new Mock <IDisposable>();
var target = new CombinedDisposables(reverse: true, removeDispose: false);
target.Add(item1.Object);
target.Add(item2.Object);
target.Add(item3.Object);
target.Add(item4.Object);
target.Add(item5.Object);
target.Should().HaveCount(5);
target.Remove(item2.Object);
target.Contains(item1.Object).Should().Be(true);
target.Contains(item2.Object).Should().Be(false);
target.Contains(item3.Object).Should().Be(true);
target.Contains(item4.Object).Should().Be(true);
target.Contains(item5.Object).Should().Be(true);
target.Remove(item2.Object); // 同じオブジェクトを再度指定
target.Contains(item1.Object).Should().Be(true);
target.Contains(item2.Object).Should().Be(false);
target.Contains(item3.Object).Should().Be(true);
target.Contains(item4.Object).Should().Be(true);
target.Contains(item5.Object).Should().Be(true);
target.Remove(item1.Object);
target.Remove(item3.Object);
target.Remove(item4.Object);
target.Remove(item5.Object);
target.Contains(item1.Object).Should().Be(false);
target.Contains(item2.Object).Should().Be(false);
target.Contains(item3.Object).Should().Be(false);
target.Contains(item4.Object).Should().Be(false);
target.Contains(item5.Object).Should().Be(false);
}