public void TestMultipleCrossContextImplicitBindings()
{
TestImplicitBindingClass.instantiationCount = 0;
int contextsBeforeInstancing = 3;
int contextsAfterInstancing = 4;
int contextsToCreate = contextsBeforeInstancing + contextsAfterInstancing;
int getInstanceCallsPerContext = 3;
int injectsPerContext = 3;
List<Context> contexts = new List<Context>();
IInjectionBinding bindingBeforeContextCreation = null;
object bindingValueBeforeContextCreation = null;
//We create several Contexts.
//note contextNumber is 1-based
for (int contextNumber = 1; contextNumber <= contextsToCreate; contextNumber++)
{
//The first batch of Contexts don't actually create instances, just the implicit bindings
bool toInstance = (contextNumber > contextsBeforeInstancing);
//Specifically call out the Context that is first to create actual instances
bool isFirstContextToCallGetInstance = (contextNumber == (contextsBeforeInstancing + 1));
//Create each "ContextView" and its Context
object mockGameObject = new object ();
TestImplicitBindingContext context = new TestImplicitBindingContext (mockGameObject);
contexts.Add (context);
//For each Context, check that the TestImplicitBindingClass BINDING exists (no instance created yet)
IInjectionBinding bindingAfterContextCreation = context.injectionBinder.GetBinding<TestImplicitBindingClass> ();
object bindingValueAfterContextCreation = bindingAfterContextCreation.value;
bool bindingChangedDueToContextCreation = !bindingAfterContextCreation.Equals(bindingBeforeContextCreation);
bool bindingValueChangedDueToContextCreation = bindingValueAfterContextCreation != bindingValueBeforeContextCreation;
//due to the weak binding replacement rules, the binding should change every time we scan until we instance
Assert.IsFalse (bindingChangedDueToContextCreation && toInstance && !isFirstContextToCallGetInstance);
//after creating a new context, the value of the binding should only change on the first context
//(it was null before that)
Assert.IsFalse (bindingValueChangedDueToContextCreation && contextNumber != 1);
if (toInstance)
{
//For the Contexts that actually create instances...
for (int a = 0; a < getInstanceCallsPerContext; a++)
{
//...create some instances (well, duh) of the TestImplicitBindingClass...
TestImplicitBindingClass instance = context.injectionBinder.GetInstance<TestImplicitBindingClass> ();
Assert.IsNotNull (instance);
}
for (int b = 0; b < injectsPerContext; b++)
{
//...and some instances of the class that gets injected with TestImplicitBindingClass.
TestImplicitBindingInjectionReceiver instance = context.injectionBinder.GetInstance<TestImplicitBindingInjectionReceiver> ();
Assert.IsNotNull (instance);
Assert.IsNotNull (instance.testImplicitBindingClass);
}
}
//We inspect the binding and its value after all this mapping/instantiation
IInjectionBinding bindingAfterGetInstanceCalls = context.injectionBinder.GetBinding<TestImplicitBindingClass> ();
object bindingValueAfterGetInstanceCalls = bindingAfterGetInstanceCalls.value;
bool bindingChangedDueToGetInstanceCalls = bindingAfterGetInstanceCalls != bindingAfterContextCreation;
bool bindingValueChangedDueToGetInstanceCalls = bindingValueAfterGetInstanceCalls != bindingValueAfterContextCreation;
//the binding itself should only change during the scan
Assert.IsFalse (bindingChangedDueToGetInstanceCalls);
//if the weak binding replacement rules are working, the only time the value should
//change is the first time we call GetInstance
Assert.IsFalse (bindingValueChangedDueToGetInstanceCalls && !isFirstContextToCallGetInstance);
//reset values for the next pass
bindingBeforeContextCreation = bindingAfterGetInstanceCalls;
bindingValueBeforeContextCreation = bindingValueAfterGetInstanceCalls;
}
//This is a Cross-Context Singleton.
//The primary purpose of this test is to ensure (that under the circumstances of this test),
//TestImplicitBindingClass should only get instantiated once
Assert.AreEqual (1, TestImplicitBindingClass.instantiationCount);
}
public void TestRescanDoesNotOverrideCrossContextValue()
{
object mockGameObject = new object();
TestImplicitBindingContext context = new TestImplicitBindingContext(mockGameObject);
//Get our binding. It should have value of Runtime Type. It hasn't been instantiated yet.
IInjectionBinding binding = context.injectionBinder.GetBinding<TestImplicitBindingClass>();
Assert.IsTrue(binding.value is Type);
//GetInstance. This should set the value to the instantiated class
TestImplicitBindingClass instanceValue = context.injectionBinder.GetInstance<TestImplicitBindingClass>();
Assert.IsNotNull(instanceValue);
IInjectionBinding bindingAfterGetInstance = context.injectionBinder.GetBinding<TestImplicitBindingClass>();
Assert.IsTrue(bindingAfterGetInstance.value is TestImplicitBindingClass);
Assert.AreSame(bindingAfterGetInstance, binding);
//Rescan our implicit bindings
//Our binding value should remain
context.Scan();
IInjectionBinding bindingAfterRescan = context.injectionBinder.GetBinding<TestImplicitBindingClass>();
Assert.AreSame(bindingAfterRescan, binding); //Should be the same binding, and not override it
Assert.IsTrue(bindingAfterRescan.value is TestImplicitBindingClass);
Assert.AreSame(bindingAfterRescan.value, instanceValue);
}
