How to verify that method was NOT called in Moq?

🕵️‍♀️ How to Verify that a Method Was NOT Called in Moq 🕵️‍♂️

Do you ever find yourself in a situation where you need to make sure that a specific method was not called while using Moq? 🤔 It's not uncommon for us to overlook this requirement, but fear not, because Moq provides a simple solution to this problem. Let's dive into the details! 💪

🏗️ The Context

In your journey of using Moq, you may have come across the need to verify that a certain method was called during your tests. Moq provides the handy Verify method for this purpose. However, what about the opposite scenario? How can we verify that a method was not called? 🤷‍♀️

📚 The Old Syntax

In earlier versions of Moq, there wasn't a direct way to assert that a method was not called. The community often wondered if Moq had something akin to an AssertWasNotCalled method. ⌛️

✨ The New Syntax

Fortunately, Moq developers heard our plea for a more direct approach! Starting from Version 3.0, a new syntax was introduced to verify if a method was indeed never called. 🎉

To use this syntax, you can utilize the Times.Never() option within the Verify method. Here's an example to demonstrate how it works:

mock.Verify(foo => foo.Execute("ping"), Times.Never());

In the example above, we assume we have a mock named mock, and we want to ensure that the Execute method on this mock was not called with the parameter value "ping". By using Times.Never(), Moq will verify that this method was never invoked. 🙅‍♂️

🚦 Wrapping It Up

With the introduction of the new syntax, verifying that a method was not called in Moq has become much easier. 🎊 No more workarounds or custom assertions are needed. Simply utilize the Times.Never() option within the Verify method, and you're good to go! 🚀

So, next time you find yourself in a situation where you need to ensure that a method was not called with Moq, remember this handy syntax. Happy testing! 🧪

Now that you know how to verify that a method was not called in Moq, go ahead and check out our other helpful articles on Moq and unit testing. 📖 And don't forget to share this post with your fellow developers who might find it useful! 👥

Let us know in the comments below if you've ever encountered any struggles when working with Moq or if you have any questions. We'd love to hear from you! 🗣️⌨️