public void Should_release_value_when_there_are_no_more_references()
{
var table = new ConditionalWeakTable <TypeWithStrongReferenceThroughTable, TypeWithWeakReference>();
var strong = new TypeWithStrongReferenceThroughTable();
var weak = new TypeWithWeakReference()
{
WeakReference = new WeakReference(strong)
};
table.Add(strong, weak);
GC.Collect();
TypeWithWeakReference result = null;
Assert.That(table.TryGetValue(strong, out result), Is.True);
Assert.That(result, Is.SameAs(weak));
var weakHandleToStrong = new WeakReference(strong);
strong = null;
GC.Collect();
Assert.That(weakHandleToStrong.IsAlive, Is.False);
}
public void Should_release_value_when_there_are_no_more_references()
{
var table = new ConditionalWeakTable<TypeWithStrongReferenceThroughTable, TypeWithWeakReference>();
var strong = new TypeWithStrongReferenceThroughTable();
var weak = new TypeWithWeakReference()
{
WeakReference = new WeakReference(strong)
};
table.Add(strong, weak);
GC.Collect();
TypeWithWeakReference result = null;
Assert.That(table.TryGetValue(strong, out result), Is.True);
Assert.That(result, Is.SameAs(weak));
var weakHandleToStrong = new WeakReference(strong);
strong = null;
GC.Collect();
Assert.That(weakHandleToStrong.IsAlive, Is.False);
}
public void Should_release_value_when_there_are_no_more_references()
{
// Arrange
var table = new ConditionalWeakTable <TypeWithStrongReferenceThroughTable, TypeWithWeakReference>();
var strong = new TypeWithStrongReferenceThroughTable();
var weak = new TypeWithWeakReference()
{
WeakReference = new WeakReference(strong)
};
table.Add(strong, weak);
var weakHandleToStrong = new WeakReference(strong);
// Act
strong = null;
GC.Collect();
// Assert
weakHandleToStrong.IsAlive.Should().BeFalse();
}
public void Should_retain_value_when_references_exist()
{
// Arrange
var table = new ConditionalWeakTable <TypeWithStrongReferenceThroughTable, TypeWithWeakReference>();
var strong = new TypeWithStrongReferenceThroughTable();
var weak = new TypeWithWeakReference()
{
WeakReference = new WeakReference(strong)
};
table.Add(strong, weak);
// Act
GC.Collect();
// Assert
TypeWithWeakReference result = null;
table.TryGetValue(strong, out result).Should().BeTrue();
result.Should().BeSameAs(weak);
}