blueprints/instance-initializers-test: Add RFC232 variants

[snewcomer]

Progress on #15933

[rwjblue]

I’d like to restructure things a bit, I left an example in line would you mind giving that snippet a whirl and confirming that it works properly? I believe it should (barring any typos etc)

[rwjblue]

Instance initializers expect to receive an Ember.ApplicationInstance instance, but this is an Ember.Application instance.

[rwjblue]

To fix that, you would do something like:

module(‘asdf’, function(hooks) {

  hooks.beforeEach(function() {
    this.Application = Ember.Application.extend();
    this.application = this.Application.create({ autoboot: true });
    this.application.instanceInitializer({
      name: ‘initializer under test’,
      initialize
    });
  });

  hooks.afterEach(function() {
    runDestroy(this.instance);
    runDestroy(this.application);
  });

  test(‘it works’, async function(assert) {
    this.instance = this.application.buildInstance();
    await this.instance.boot();
    assert.ok(didTheInitializerWork);
  });
});

[snewcomer]

@rwjblue Ah yeah overall my bad. So with this test, await this.instance.boot(); results in Assertion Failed: You cannot use the same root element (BODY) multiple times in an Ember.Application. Failing on this line -

ember.js/packages/ember-views/lib/system/event_dispatcher.js

Line 179 in 5f4ac60

assert(`You cannot use the same root element (${rootElement.selector || rootElement[0].tagName}) multiple times in an Ember.Application`, !rootElement.is(ROOT_ELEMENT_SELECTOR));

[snewcomer]

tested on a 2.17 application.

[rwjblue]

Would you mind pushing up your demo app so I can tinker with it to find the right combo?

[rwjblue]

Also, I made a really bad mistake in my comment above, it should be { autoboot: false } (and I had true in the comment)

[rwjblue]

OK, just tested locally, and I think that it will work once updating to { autoboot: false } (sorry about that).

• example instance-initializer test
• diff of changes needed

[rwjblue]

Can you swap this to Application.create({ autoboot: false }) here?

[rwjblue]

This shouldn’t be needed with my suggested changes

[rwjblue]

We shouldn’t need to Ember.run here, why is this required? Is there an error or something without it?

[snewcomer]

Yeah the error I get is the You have turned on testing mode... error...specifically related to the Application.create() expression.

[rwjblue]

Awesome, thank you!