public void ShouldThrowExceptionWhenTryingToInsertItemOfExistingType()
{
var set = new TypedSet <FooBase>();
set.Insert(new Foo1());
set.Insert(new Foo2());
Assert.Throws(typeof(Exception), () =>
{
set.Insert(new Foo1());
}, $"Collection already contains an item of type {new Foo1().GetType()}");
}
public void ShouldReturnNullIfEmpty()
{
//arrange
var set = new TypedSet <FooBase>();
//act
var returnedItem = set.Get <Foo1>();
//assert
Assert.AreEqual(null, returnedItem);
}
public void ShouldAllowToInsertItemsOfDifferentType()
{
//arrange
var set = new TypedSet <FooBase>();
//act
set.Insert(new Foo1());
set.Insert(new Foo2());
set.Insert(new Foo3());
//assert
Assert.AreEqual(3, set.Count());
}
public void ShouldReturnNullIfDoesNotContain()
{
//arrange
var set = new TypedSet <FooBase>();
set.Insert(new Foo1());
set.Insert(new Foo2());
//act
var returnedItem = set.Get <Foo3>();
//assert
Assert.AreEqual(null, returnedItem);
}
public void ShouldTellFalseIfContainsItemOfDesiredType()
{
//arrange
var set = new TypedSet <FooBase>();
set.Insert(new Foo1());
set.Insert(new Foo2());
//act
var result = set.Contains <Foo3>();
//assert
Assert.IsFalse(result);
}
public void ShouldReturnItemOfDesiredTypeIfContains()
{
//arrange
var set = new TypedSet <FooBase>();
var desiredItem = new Foo3();
set.Insert(new Foo1());
set.Insert(new Foo2());
set.Insert(desiredItem);
//act
var returnedItem = set.Get <Foo3>();
//assert
Assert.AreEqual(desiredItem, returnedItem);
}
public void ShouldDoNothingIfItemOfDesiredTypeDoesNotExistInSet()
{
//arrange
var set = new TypedSet <FooBase>();
var itemToRemove = new Foo3();
set.Insert(new Foo1());
set.Insert(new Foo2());
//act
set.Remove(itemToRemove);
var containsResult = set.Contains <Foo2>();
//assert
Assert.AreEqual(true, containsResult);
Assert.AreEqual(2, set.Count());
}
public void ShouldRemoveItemOfDesiredTypeIfExistsInSet()
{
//arrange
var set = new TypedSet <FooBase>();
var itemToRemove = new Foo2();
set.Insert(new Foo1());
set.Insert(itemToRemove);
//act
set.Remove(itemToRemove);
var containsResult = set.Contains <Foo2>();
//assert
Assert.AreEqual(false, containsResult);
Assert.AreEqual(1, set.Count());
}
/**
* Returns a typed set backed by the given set.
* <p>
* Only objects of the specified type can be added to the set.
*
* @param set the set to limit to a specific type, must not be null
* @param type the type of objects which may be added to the set
* @return a typed set backed by the specified set
*/
public static java.util.Set <Object> typedSet(java.util.Set <Object> set, java.lang.Class type)
{
return(TypedSet.decorate(set, type));
}
