Esempio n. 1
0
        public void IndirectDependentObjectCanBeGarbageCollected()
        {
            GC.Collect();
            SourceData        independent       = new SourceData();
            DirectDependent   intermediate      = new DirectDependent(independent);
            IndirectDependent indirectDependent = new IndirectDependent(intermediate);

            independent.SourceProperty = 42;
            Assert.AreEqual(42, indirectDependent.DependentProperty);
            WeakReference weakIndirectDependent = new WeakReference(indirectDependent);

            GC.Collect();
            Assert.IsTrue(weakIndirectDependent.IsAlive, "Since we hold a strong reference to the dependent, the object should still be alive.");
            // This assertion here to make sure the dependent is not optimized away.
            Assert.AreEqual(42, indirectDependent.DependentProperty);

            indirectDependent = null;
            GC.Collect();
            Assert.IsFalse(weakIndirectDependent.IsAlive, "Since we released the strong reference to the dependent, the object should not be alive.");

            // Make sure we can still modify the independent, and that the intermediate still depends upon it.
            independent.SourceProperty = 32;
            Assert.AreEqual(32, independent.SourceProperty);
            Assert.AreEqual(32, intermediate.DependentProperty);
        }
 public void Initialize()
 {
     _source = new SourceData();
     _intermediateDependent = new DirectDependent(_source);
     _dependent = new IndirectDependent(_intermediateDependent);
 }
 public void Initialize()
 {
     _source = new SourceData();
     _intermediateDependent = new DirectDependent(_source);
     _dependent             = new IndirectDependent(_intermediateDependent);
 }
Esempio n. 4
0
        public void IndirectDependentObjectCanBeGarbageCollected()
        {
            GC.Collect();
            SourceData independent = new SourceData();
            DirectDependent intermediate = new DirectDependent(independent);
            IndirectDependent indirectDependent = new IndirectDependent(intermediate);
            independent.SourceProperty = 42;
            Assert.AreEqual(42, indirectDependent.DependentProperty);
            WeakReference weakIndirectDependent = new WeakReference(indirectDependent);

            GC.Collect();
            Assert.IsTrue(weakIndirectDependent.IsAlive, "Since we hold a strong reference to the dependent, the object should still be alive.");
            // This assertion here to make sure the dependent is not optimized away.
            Assert.AreEqual(42, indirectDependent.DependentProperty);

            indirectDependent = null;
            GC.Collect();
            Assert.IsFalse(weakIndirectDependent.IsAlive, "Since we released the strong reference to the dependent, the object should not be alive.");

            // Make sure we can still modify the independent, and that the intermediate still depends upon it.
            independent.SourceProperty = 32;
            Assert.AreEqual(32, independent.SourceProperty);
            Assert.AreEqual(32, intermediate.DependentProperty);
        }