Can't create a page for testing

Question

I'm trying to create a page in my test class like this:

PageReference pageRef = Page.testPage;
Test.setCurrentPage(pageRef);

But I'm getting an error:

Compilation error: Page testPage does not exist.

What I'm doing wrong here?

Answer 1

"Page.testPage"

The highlighted text should always be name of valid VF page. We use this as a reference while covering the corresponding controller class. VF page cannot be created in context of Test Class.

Answer 2

To test a controller, for the most part, you never need to call Test.setCurrentPage at all. In fact I have never needed to do so, because even when I am parsing parameters from ApexPages.currentPage, I do not actually care what its URL is. It's a fairly esoteric function.