V2 addons: initializers are duplicated or ran in the wrong context?

[NullVoxPopuli]

Reproduction: https://github.com/NullVoxPopuli/ember-addon-v2-duplicate-modules

I first noticed this when I was messing with: NullVoxPopuli/ember-statechart-component#244 (which relies on an initializer to utilize setComponentManager) -- it presented itself via ember saying that it didn't know of a component manager to handle StateNode (from xstate) -- which now makes sense, because the initializer code is in a chunk that runs after initializers are needed.

Odd things that can be noticed:

• the module can be imported twice (a log is at module-level in the initializer, and logs when the app/test boots, and again during import)
• the initializer only runs once (when called manually in the test) -- I'd expect the initializer to run during app/test boot?

[ef4]

The reason your initializer isn't running normally is that your test isn't using one of the setup functions from ember-qunit. You need at least import { setupTest } from 'ember-qunit'.

The reason your module is getting duplicated is that your app imports the initializer from the path

my-addon/instance-initializers/test-initializer.js

but your test suite imports the initializer from the path

my-addon/instance-initializers/test-initializer

And this seems to be enough to confuse ember-auto-import, so I filed embroider-build/ember-auto-import#503

[NullVoxPopuli]

legit. thanks!

I confirmed that by adding setupTest and by changing my import to have .js at the end, the test in the example passes.
Which I should have included in the OP, but (for completeness) it's:

// initializer
console.log('running...');

let i = 0;

export function initialize() {
  i++;
  console.log(`invoked... ${i}`);
  window.i = i;
}

export default {
  initialize,
};

and the test (now passing)

import { module, test } from 'qunit';
import { setupTest } from 'ember-qunit';

import { initialize } from 'my-addon/instance-initializers/test-initializer.js';

module('The Test', function (hooks) {
  setupTest(hooks);

  test('did initializer laod?', function (assert) {
    assert.strictEqual(window.i, 1);

    initialize();

    assert.strictEqual(window.i, 2);
  });
});