Tests consume a lot of memory

[Ivan Micanovic]

Hi,

I have googled for this topic and I found other people encounter same issue.

Here I will give you some inputs from my side.

In my case I have discovered that running tests (we have about 1500 tests) consumes about 5GB at the end of executing.

Our setup is:

   - android studio 3.4.2

   - jdk 9

   - robolectirc 4.2

   - androidx

Obviously somewhere memory leaks.

For each test where we create activity, in @After we call 

        activity.onPause()

        activity.onStop()

        activity.onDestroy()

but it's not enough to prevent dispose some objects allocated during the executing test.

Also, I do some statistics using VisualVM tool and here is output:

As you can see, almost 2.2GB are consumed in first line and (on this preview) robolectric objects allocated about 3.4 GB. Dose anyone know what I need to do in my tests to release that objects?
I assume the robolectric creates some of this objects when create Application object. If it's true then definitely I need to do something with Application instance in @After section. Does this make sense or I'm completely wrong?

Thanks in advance,

Ivan