public void GetAllRegistered_ReturnsExpectedCollection_WhenRegisterSeveralEntities()
{
//arrange
var testString = "TEST";
var expectedCount = 2;
//action
_container.Register <TestA, TestB>();
_container.Register <TestA, TestB1>(() => new TestB1("TEST"));
var instancesCollection = _container.GetAllRegistered <TestA>().ToList();
//assert
Assert.AreEqual(expectedCount, instancesCollection.Count);
Assert.IsInstanceOf <TestB>(instancesCollection[0]);
Assert.IsInstanceOf <TestB1>(instancesCollection[1]);
Assert.AreEqual(testString, ((TestB1)instancesCollection[1]).Value);
}