Add test coverage to eb_widget

We could use that in #3083640: Check before adding the result of createFile to the entity list too. Started working on it.

Finally had time for this. First try at this.

As per @Berdir suggestion, adding the library via drupaci.yml. Not sure if only new commands need to be added or we need to override the whole default thing. Let's see.

...

Finally. Seems only deprication now remains. Sry for all the spamming.

+++ b/drupalci.yml
@@ -0,0 +1,66 @@
+        suppress-deprecations: false
...
+        suppress-deprecations: false
...
+        suppress-deprecations: false
...
+        suppress-deprecations: false

I would switch this to true.

Deprecations shouldn't fail tests, you can't have zero deprecations against 8.8 without hacks for 8.7.

And there might be new deprecations at any moment, which would suddenly cause test fails.

Yay, thanks @Berdir

1. +++ b/drupalci.yml
   --- /dev/null
   +++ b/tests/modules/dropzonejs_test/composer.json
   
   +++ b/tests/modules/dropzonejs_test/composer.json
   +++ b/tests/modules/dropzonejs_test/composer.json
   @@ -0,0 +1,44 @@
   
   @@ -0,0 +1,44 @@
   +{
   +  "name": "drupal/dropzonejs",
   +  "description": "Drupal integration for DropzoneJS - An open source library that provides drag’n’drop file uploads with image previews.",
   +  "type": "drupal-module",
   +  "homepage": "https://www.drupal.org/project/dropzonejs",
   +  "keywords": ["Drupal", "DropzoneJS"],
   +  "license": "GPL-2.0+",
   

   confused by this, a test module doesn't need a composer.json? seems like it is just a copy of the main one?

2. +++ b/tests/modules/dropzonejs_test/dropzonejs_test.info.yml
   @@ -5,4 +5,6 @@ package: Testing
    version: VERSION
    core: 8.x
    dependencies:
   + - drupal:media
     - dropzonejs:dropzonejs
   + - dropzonejs:dropzonejs_eb_widget
   

   when touching this anyway, you do might want to add the core_version_requirement: ^8 || ^9 already though, one thing less to fix, and the version: VERSION is also bogus, remove.

Addressed 1. Ignored 2. per chat :)

Rerolling.

Um,... here it passed, but now head is failing.

Looks like testbot ignores our drupalci?

> This build does not contain a modified drupalci.yml file. Using existing assessment stage.

Changing commands syntax.

Let's retry with 8.x-1.x. now.

Eh, of course not,... doing that on autopilot.