public void RemovingNumberFromEmptyHashSetThrows()
{
var value = Fixture.Create <int>();
var hashSet = new HashSet <int>();
var sut = new HashSetGenericTemplateMethod();
Assert.Throws <InvalidOperationException>(() => sut.RemoveFromParent(hashSet, value));
}
public void AddingNumberToEmptyHashSetTwiceThrows()
{
var value = Fixture.Create <int>();
var hashSet = new HashSet <int>();
var sut = new HashSetGenericTemplateMethod();
sut.AddToParent(hashSet, value);
Assert.Throws <InvalidOperationException>(() => sut.AddToParent(hashSet, value));
}
public void AddingAndRemovingNumberFromHashSet()
{
var value = Fixture.Create <int>();
var hashSet = new HashSet <int>();
var sut = new HashSetGenericTemplateMethod();
sut.AddToParent(hashSet, value);
sut.RemoveFromParent(hashSet, value);
Assert.AreEqual(0, hashSet.Count);
}
public void AddsNumberToEmptyHashSet()
{
var value = Fixture.Create <int>();
var hashSet = new HashSet <int>();
var sut = new HashSetGenericTemplateMethod();
sut.AddToParent(hashSet, value);
Assert.AreEqual(1, hashSet.Count);
Assert.IsTrue(hashSet.Contains(value));
}
public void MovingIntFromHashSetToHashSetWhereItAlreadyExistsThrows()
{
var value = Fixture.Create <int>();
var hashSet1 = new HashSet <int>();
var hashSet2 = new HashSet <int>();
var sut = new HashSetGenericTemplateMethod();
sut.AddToParent(hashSet1, value);
sut.AddToParent(hashSet2, value);
Assert.Throws <InvalidOperationException>(() => sut.MoveChildBetweenParents(hashSet1, hashSet2, value));
}
public void AddingMovingAndRemovingIntFromOneHashSetToAnother()
{
var value = 16;
var hashSet1 = new HashSet <int>();
var hashSet2 = new HashSet <int>();
var sut = new HashSetGenericTemplateMethod();
sut.AddToParent(hashSet1, 2);
sut.AddToParent(hashSet1, 4);
sut.AddToParent(hashSet1, 8);
sut.AddToParent(hashSet2, 4);
sut.AddToParent(hashSet2, 8);
sut.AddToParent(hashSet2, 12);
sut.AddToParent(hashSet1, value);
sut.MoveChildBetweenParents(hashSet1, hashSet2, value);
sut.RemoveFromParent(hashSet2, value);
Assert.IsFalse(hashSet1.Contains(value));
Assert.IsFalse(hashSet2.Contains(value));
}