My unit test class requires many helper methods - is this normal?

I have a class that installs software drivers through WMI. However, I noticed that when writing my unit tests to complete the statement, I need additional helper methods. For instance. to make sure the driver is added, I need to make sure that the number of drivers has increased by one, which is not a method in the class under the test.

Is this normal for unit tests, or am I doing something wrong? I'm just going to take all these helper methods and extract them into a static class.

thank