You can use the --app in mix cmd: mix cmd --app app1 --app app2 mix test

@axelson, just did something for you

Coming back to this thread rather late but I ran into the same issue today and came across my post in a search.

While this is very useful it still runs the test in that applications directory whereas I want the same behavior of mix test when run from the umbrella root which loads the entire project, this is needed in my umbrella application because the configuration is shared for every app in the umbrella, and the configuration references modules from various applications which causes tests to fail if run from that applications folder.

Since this relies on cding into each application folder it suffers from the same issue.

You can run specific tests with
mix test path/to/file:line_number
I am not sure if this is what you are looking for.

No, that’s not quite what I’m looking for since Mox will still try to run the tests for that path against all umbrella projects.