public void ShouldCreateContainerType()
{
var assembly = _assemblyBuilder.CreateAssembly(Guid.NewGuid().ToString(), ModuleKind.Dll);
var module = assembly.MainModule;
TypeReference baseType = module.Import(typeof(object));
var microContainerTypeRef = module.Import(typeof(IMicroContainer));
TypeReference[] interfaces = new TypeReference[] { microContainerTypeRef };
string typeName = "Hiro.MicroContainer";
string namespaceName = "Hiro.Containers";
var typeBuilder = new ContainerTypeBuilder();
TypeDefinition result = typeBuilder.CreateType(typeName, namespaceName, baseType, assembly, interfaces);
// Verify the type attributes
Assert.IsTrue(result.IsAutoClass);
Assert.IsTrue(result.IsClass);
Assert.IsTrue(result.IsBeforeFieldInit);
Assert.IsTrue(result.IsPublic);
Assert.IsTrue(result.Implements(microContainerTypeRef));
// Verify that the default constructor exists
var constructor = result.GetDefaultConstructor();
Assert.IsNotNull(constructor);
Assert.IsTrue(constructor.Parameters.Count == 0);
}
private void ShouldProvideMethodOverrideFor <T>(string methodName)
where T : class
{
MethodInfo targetMethod = typeof(T).GetMethod(methodName);
var assembly = _assemblyBuilder.CreateAssembly("Test", ModuleKind.Dll);
var module = assembly.MainModule;
var objectType = module.Import(typeof(object));
var typeBuilder = new ContainerTypeBuilder();
TypeDefinition hostType = typeBuilder.CreateType("Test", "Test", objectType, assembly);
var overrider = new MethodOverrider();
overrider.AddOverrideFor(targetMethod, hostType);
// Search for the target method and make sure it matches the target method
// signature
var newMethod = (from MethodDefinition method in hostType.Methods
where method.Name == methodName
select method).First();
// Match the parameters
var index = 0;
foreach (var param in targetMethod.GetParameters())
{
var parameterTypeRef = module.Import(param.ParameterType);
var currentParameter = newMethod.Parameters[index];
Assert.IsTrue(currentParameter.ParameterType.IsEquivalentTo(parameterTypeRef));
index++;
}
// Match the return type
var returnTypeRef = module.Import(targetMethod.ReturnType);
if (!(returnTypeRef is GenericInstanceType))
{
Assert.IsTrue(newMethod.ReturnType.IsEquivalentTo(returnTypeRef));
}
else
{
var first = (GenericInstanceType)returnTypeRef;
var second = (GenericInstanceType)newMethod.ReturnType;
Assert.IsTrue(first.ElementType.IsEquivalentTo(second.ElementType));
}
// Verify the method attributes
Assert.IsTrue(newMethod.IsVirtual);
Assert.AreEqual(newMethod.IsPublic, targetMethod.IsPublic);
Assert.AreEqual(newMethod.IsStatic, targetMethod.IsStatic);
Assert.AreEqual(newMethod.IsHideBySig, targetMethod.IsHideBySig);
}
private void TestCreatePublicMethod(bool isStatic)
{
var typeBuilder = new ContainerTypeBuilder();
var methodBuilder = new MethodBuilder();
MethodBuilderOptions options = new MethodBuilderOptions();
var assembly = _assemblyBuilder.CreateAssembly("SomeAssembly", ModuleKind.Dll);
var module = assembly.MainModule;
var objectType = module.Import(typeof(object));
var targetType = typeBuilder.CreateType("SomeType", "SomeNamespace", objectType, assembly);
var methodName = "SomeMethod";
options.MethodName = methodName;
options.HostType = targetType;
options.SetMethodParameters(typeof(int), typeof(int));
options.ReturnType = typeof(void);
options.IsPublic = true;
options.IsStatic = isStatic;
MethodDefinition result = methodBuilder.CreateMethod(options);
// Verify the method attributes
Assert.IsTrue(result.IsPublic);
Assert.IsFalse(result.IsAbstract);
if (!isStatic)
{
Assert.IsTrue(result.HasThis);
Assert.IsTrue(result.IsVirtual);
}
else
{
Assert.IsTrue(result.IsStatic);
}
// Check the method signature
Assert.IsTrue(result.Parameters.Count == 2);
var integerType = module.Import(typeof(int));
foreach (ParameterDefinition param in result.Parameters)
{
Assert.IsTrue(param.ParameterType.IsEquivalentTo(integerType));
}
}