Error while creating tests in Visual Studio

Question

When I try to generate a unit test for the following method (in a public static class)

private static string[] GetFields(string line, char sep)
{
    char[] totrim = { '"', ' ' };
    return line.Split(sep).Select(col => col.Trim(totrim)).ToArray();
}

The Tests output says:

While trying to generate your tests, the following errors occurred:
This method or property cannot be called within an event handler.

It works if I make the function public - I've tried running Publicize.exe manually, it doesn't complain, but doesn't make any difference either.

Answer 1

If your function is private, then its private. No other assemblies, including your test framework, should be able to see it directly.

You either need to make it public (which may break your model), expose a public wrapping function that you clearly state is for testing only (which is open to abuse) or you can make it available to just your unit test component by adding the following attribute (assuming you are using C#) to the class that contains GetFields

[assembly:InternalsVisibleTo("[your unit test component name]")]

The Microsoft website has more information here