public void ValueTypesCannotBeCarrierObjects()
{
int carrier = 13;
var propertyDefinition = new PropertyConnector <object, int>();
propertyDefinition.GetProperty(carrier);
}
public void ValueTypesCannotBeCarrierObjects_Try()
{
int carrier = 13;
var propertyDefinition = new PropertyConnector <object, int>();
Assert.IsNull(propertyDefinition.TryGetProperty(carrier));
}
public void ConnectedPropertiesAreInitiallyDisconnected()
{
object carrier = new object();
var propertyDefinition = new PropertyConnector <object, int>();
Assert.IsFalse(propertyDefinition.GetProperty(carrier).TryDisconnect());
}
public void ObjectCanBeCarrierObjects_Try()
{
object carrier = new object();
var propertyDefinition = new PropertyConnector <object, int>();
Assert.IsNotNull(propertyDefinition.TryGetProperty(carrier));
}
public void StringsCannotBeCarrierObjects_Try()
{
string carrier = "Hi";
var propertyDefinition = new PropertyConnector <string, int>();
Assert.IsNull(propertyDefinition.TryGetProperty(carrier));
}
public void MyClassCanBeCarrierObjectsForConnectorOfInterfaceType()
{
MyClass carrier = new MyClass();
var propertyDefinition = new PropertyConnector <IMyInterface, int>();
Assert.IsNotNull(propertyDefinition.TryGetProperty(carrier));
}
public void MyStructCannotBeCarrierObjectsForConnectorOfInterfaceType()
{
MyStruct carrier = new MyStruct();
var propertyDefinition = new PropertyConnector <IMyInterface, int>();
Assert.IsNull(propertyDefinition.TryGetProperty(carrier));
}
public void GetWillThrowIfDisconnected()
{
object carrier = new object();
var propertyDefinition = new PropertyConnector <object, int>();
propertyDefinition.GetProperty(carrier).Get();
}
public void StringsCannotBeCarrierObjects()
{
string carrier = "Hi";
var propertyDefinition = new PropertyConnector <string, int>();
propertyDefinition.GetProperty(carrier);
}
public void ConnectedReferencePropertyMayBeRead()
{
object carrier = new object();
var propertyDefinition = new PropertyConnector <object, string>();
propertyDefinition.GetProperty(carrier).Set("A");
Assert.AreEqual("A", propertyDefinition.GetProperty(carrier).Get());
}
public void ValueTypesWithoutValidationCanBeCarrierObjects_Try()
{
// Please note: this is an extremely dangerous example! Do not use in real-world code!
int carrier = 13;
var propertyDefinition = new PropertyConnector <object, int>();
Assert.IsNotNull(propertyDefinition.TryGetProperty(carrier, true));
}
public void ConnectedPropertyMayBeRead()
{
object carrier = new object();
var propertyDefinition = new PropertyConnector <object, int>();
propertyDefinition.GetProperty(carrier).Set(13);
Assert.AreEqual(13, propertyDefinition.GetProperty(carrier).Get());
}
public void StringsWithoutValidationCanBeCarrierObjects_Try()
{
// Please note: this is a highly dangerous example! Do not use in real-world code unless you know for-sure what you're doing!
string carrier = "Hi";
var propertyDefinition = new PropertyConnector <string, int>();
Assert.IsNotNull(propertyDefinition.TryGetProperty(carrier, true));
}
public void MyStructWithoutValidationCanBeCarrierObjectForConnectorOfInterfaceType()
{
// Please note: this is an extremely dangerous example! Do not use in real-world code!
MyStruct carrier = new MyStruct();
var propertyDefinition = new PropertyConnector <IMyInterface, int>();
Assert.IsNotNull(propertyDefinition.TryGetProperty(carrier, true));
}
public void GetOrConnectConnectsIfNecessary()
{
object carrier = new object();
var propertyDefinition = new PropertyConnector <object, int>();
Assert.AreEqual(13, propertyDefinition.GetProperty(carrier).GetOrConnect(13));
Assert.IsFalse(propertyDefinition.GetProperty(carrier).TryConnect(17));
Assert.AreEqual(13, propertyDefinition.GetProperty(carrier).Get());
}
public void SetOverwritesIfConnected()
{
object carrier = new object();
var propertyDefinition = new PropertyConnector <object, int>();
propertyDefinition.GetProperty(carrier).Set(17);
propertyDefinition.GetProperty(carrier).Set(13);
Assert.AreEqual(13, propertyDefinition.GetProperty(carrier).Get());
}
public void ConnectedReferencePropertiesAfterDisconnectAreDisconnected()
{
object carrier = new object();
var propertyDefinition = new PropertyConnector <object, string>();
propertyDefinition.GetProperty(carrier).Set("A");
propertyDefinition.GetProperty(carrier).Disconnect();
Assert.IsFalse(propertyDefinition.GetProperty(carrier).TryDisconnect());
}
public void GetOrConnectConnectsReferenceIfNecessary()
{
object carrier = new object();
var propertyDefinition = new PropertyConnector <object, string>();
Assert.AreEqual("A", propertyDefinition.GetProperty(carrier).GetOrConnect("A"));
Assert.IsFalse(propertyDefinition.GetProperty(carrier).TryConnect("B"));
Assert.AreEqual("A", propertyDefinition.GetProperty(carrier).Get());
}
public void GetOrConnectDoesNotOverwriteReferenceIfConnected()
{
object carrier = new object();
var propertyDefinition = new PropertyConnector <object, string>();
propertyDefinition.GetProperty(carrier).Set("B");
Assert.AreEqual("B", propertyDefinition.GetProperty(carrier).GetOrConnect("A"));
Assert.IsFalse(propertyDefinition.GetProperty(carrier).TryConnect("C"));
}
public void SetOverwritesReferenceIfConnected()
{
object carrier = new object();
var propertyDefinition = new PropertyConnector <object, string>();
propertyDefinition.GetProperty(carrier).Set("B");
propertyDefinition.GetProperty(carrier).Set("A");
Assert.AreEqual("A", propertyDefinition.GetProperty(carrier).Get());
}
public void ConnectedPropertiesAfterSetAreConnected()
{
object carrier = new object();
var propertyDefinition = new PropertyConnector <object, int>();
propertyDefinition.GetProperty(carrier).Set(13);
Assert.IsFalse(propertyDefinition.GetProperty(carrier).TryConnect(17));
Assert.AreEqual(13, propertyDefinition.GetProperty(carrier).Get());
}
public void GetOrConnectDoesNotOverwriteIfConnected()
{
object carrier = new object();
var propertyDefinition = new PropertyConnector <object, int>();
propertyDefinition.GetProperty(carrier).Set(17);
Assert.AreEqual(17, propertyDefinition.GetProperty(carrier).GetOrConnect(13));
Assert.IsFalse(propertyDefinition.GetProperty(carrier).TryConnect(19));
}
public void Properties_WithSameTagsButDifferentConnectors_HaveIndependentValues()
{
var carrier = new object();
var other = new PropertyConnector();
PropertyConnector.Default.Get <tag1>(carrier).Set(17);
other.Get <tag1>(carrier).Set(13);
Assert.AreEqual(17, PropertyConnector.Default.Get <tag1>(carrier).Get());
Assert.AreEqual(13, other.Get <tag1>(carrier).Get());
}
public void DifferentConnectedReferencePropertiesAreIndependent()
{
object carrier = new object();
var propertyDefinition1 = new PropertyConnector <object, string>();
var propertyDefinition2 = new PropertyConnector <object, string>();
propertyDefinition1.GetProperty(carrier).Set("A");
propertyDefinition2.GetProperty(carrier).Set("B");
Assert.AreEqual("A", propertyDefinition1.GetProperty(carrier).Get());
Assert.AreEqual("B", propertyDefinition2.GetProperty(carrier).Get());
}
public void Properties_WithSameNameButDifferentConnectors_HaveIndependentValues()
{
var carrier = new object();
var name = Guid.NewGuid().ToString("N");
var other = new PropertyConnector();
PropertyConnector.Default.Get(carrier, name).Set(17);
other.Get(carrier, name).Set(13);
Assert.AreEqual(17, PropertyConnector.Default.Get(carrier, name).Get());
Assert.AreEqual(13, other.Get(carrier, name).Get());
}
public void DifferentConnectedPropertiesAreIndependent()
{
object carrier = new object();
var propertyDefinition1 = new PropertyConnector <object, int>();
var propertyDefinition2 = new PropertyConnector <object, int>();
propertyDefinition1.GetProperty(carrier).Set(17);
propertyDefinition2.GetProperty(carrier).Set(13);
Assert.AreEqual(17, propertyDefinition1.GetProperty(carrier).Get());
Assert.AreEqual(13, propertyDefinition2.GetProperty(carrier).Get());
}
public static string PreconditionViolationExceptionType()
{
try
{
var propertyDefinition = new PropertyConnector <object, dynamic>();
propertyDefinition.GetProperty(null);
return(string.Empty);
}
catch (Exception ex)
{
return(ex.GetType().ToString());
}
}
public void Property_WhenConnectorIsCollected_IsCollected()
{
var name = Guid.NewGuid().ToString("N");
var connector = new PropertyConnector();
var carrier = new object();
var value = new object();
var valueRef = new WeakReference(value);
connector.Get(carrier, name).Set(value);
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
Assert.IsFalse(valueRef.IsAlive);
GC.KeepAlive(carrier);
}
public void Properties_CrossReferencingCarriersAcrossConnectors_WhenCarriersAreCollected_AreCollected()
{
var name = Guid.NewGuid().ToString("N");
var other = new PropertyConnector();
var carrier1 = new object();
var carrierRef1 = new WeakReference(carrier1);
var carrier2 = new object();
var carrierRef2 = new WeakReference(carrier1);
Func <int> value1 = carrier2.GetHashCode;
var valueRef1 = new WeakReference(value1);
Func <int> value2 = carrier1.GetHashCode;
var valueRef2 = new WeakReference(value2);
PropertyConnector.Default.Get(carrier1, name).Set(value1);
other.Get(carrier2, name).Set(value2);
GC.Collect();
Assert.IsFalse(carrierRef1.IsAlive);
Assert.IsFalse(valueRef1.IsAlive);
Assert.IsFalse(carrierRef2.IsAlive);
Assert.IsFalse(valueRef2.IsAlive);
}
public void Property_ReferencingConnector_ActsAsStrongReference()
{
var name = Guid.NewGuid().ToString("N");
var connector = new PropertyConnector();
var connectorRef = new WeakReference(connector);
var carrier = new object();
Func <int> value = connector.GetHashCode;
var valueRef = new WeakReference(value);
connector.Get(carrier, name).Set(value);
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
Assert.IsTrue(valueRef.IsAlive);
Assert.IsTrue(connectorRef.IsAlive);
GC.KeepAlive(carrier);
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
Assert.IsFalse(valueRef.IsAlive);
Assert.IsFalse(connectorRef.IsAlive);
}
