[英]How can I mock a singleton class with NSubstitute?
I have a Singleton class, something like this : 我有一个Singleton课,像这样:
public class XConnector : IXConnector
{
private static readonly Lazy<XConnector> instance =
new Lazy<XConnector>(() => new XConnector());
public static XConnector Instance => instance.Value;
private XConnector()
{
}
public async Task<XConnector> GetData(XConnector con)
{
}
}
How can I mock this class with NSubstitute ? 如何使用NSubstitute模拟此类?
in other hand : I want something like this 另一方面:我想要这样的东西
var target = Substitute.For<IXConnector>();
this is a quick Watch when I debug this code 当我调试此代码时,这是一个快速观察
I can't remember the implementation of the Ambient Context pattern, I don't have the book to hand. 我不记得Ambient Context模式的实现,我没有书。 However, it would look something like this:
但是,它看起来像这样:
public class XConnector : IXConnector
{
private static IXConnector _instance = new XConnector();
private XConnector()
{
}
public static IXConnector Current
{
get
{
return _instance;
}
set
{
// Think about thread-safety
// Check for null?
_instance = value;
}
}
public async Task<XConnector> GetData(XConnector con)
{
}
}
Then your test can do this: 然后您的测试可以做到这一点:
XConnector.Current = Substitute.For<IXConnector>();
Your functional code can do this, working with the default instance, or the fake one: 您的功能代码可以使用默认实例或伪实例来执行此操作:
XConnector.Current.GetData(...);
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