public void Dispose_ShouldDestroyFunction()
{
RfcErrorInfo errorInfo;
_interopMock.Setup(x => x.GetFunctionDesc(It.IsAny <IntPtr>(), It.IsAny <string>(), out errorInfo)).Returns(FunctionDescriptionHandle);
_interopMock.Setup(x => x.CreateFunction(It.IsAny <IntPtr>(), out errorInfo)).Returns(FunctionHandle);
var rfcFunction = new RfcFunction(_interopMock.Object);
IRfcFunction function = rfcFunction.CreateFunction(ConnectionMock.Object, "FunctonA");
function.Dispose();
_interopMock.Verify(x => x.DestroyFunction(FunctionHandle, out errorInfo), Times.Once);
}