Upload helper doesn't work with ember-test-helpers@1.0.0

[andreyfel]

When we use 'upload' test helper with ember-test-helpers@1.0.0 there is an exception.

TypeError: Cannot read property 'length' of undefined
at buildFileEvent (http://localhost:4202/assets/tests.js:810:15)
at fireEvent (http://localhost:4202/assets/tests.js:695:15)
at http://localhost:4202/assets/tests.js:1050:30
at tryCatcher (http://localhost:4202/assets/vendor.js:71571:21)
at invokeCallback (http://localhost:4202/assets/vendor.js:71743:33)
at publish (http://localhost:4202/assets/vendor.js:71729:9)
at http://localhost:4202/assets/vendor.js:63970:16
at invokeWithOnError (http://localhost:4202/assets/vendor.js:39668:28)
at Queue.flush (http://localhost:4202/assets/vendor.js:39571:25)
at DeferredActionQueues.flush (http://localhost:4202/assets/vendor.js:39738:31)

It is probably related to this change: emberjs/ember-test-helpers#428

[Subtletree]

Yip, looks like we need:
return await triggerEvent(input, 'change', { files });

instead of:

ember-file-upload/addon-test-support/index.js

Line 19 in 750295f

return await triggerEvent(input, 'change');

or

return await triggerEvent(input, 'change', files);

would be backwards compatible but have a deprecation warning
https://github.com/emberjs/ember-test-helpers/blob/7993c67a1987e158574c629b1f2b4e12ddeaf5be/addon-test-support/%40ember/test-helpers/dom/fire-event.ts#L256

[raphaelns-developer]

When the fix will be applied?