Add a unit test project to an existing Qt Creator project

Question

I have an existing Qt Creator project which is not a Subdirs project. I have now reached a point where I want to add a unit test project to it. When I create the new unit test project, the "Add as a subproject to..." combo is disabled.

How can I do it? I'm thinking about creating a brand new Subdirs project and adding my existing project to it, and then adding the unit test project as well.

Is that how it should be done or is there a better way?

Answer 1

It's not a problem to change the project type to a subdir project (even for a gui app). That's the only way to add a unit test sub project to it. Steps:

1. As mentioned, make your project a subdir project:

   TEMPLATE = subdirs

   SUBDIRS = gui logic

2. Select File > New file or project ... > Other Project > Qt Unit Test

3. At the last page "summary" of the wizard, select your project for "Add as a subproject to project"

4. Your .pro file will be updated as follows:

   SUBDIRS = gui logic tests

Note: If you're manually restructuring the project hierarchy, make sure the name of the sub directory matches the name of .pro file within that sub directory.

For example:

• sub directory name = test --> pro file name = test.pro
• sub directory name = src --> pro file name = src.pro