1336990 - "Matching" for any type of images on the drop-file test

Status: RESOLVED INVALID

(Core :: DOM: Core & HTML, defect)

Description

[Paul Silaghi, QA [:pauly]]

[Affected versions]:
- 51.0.1, 54.0a1 (2017-02-06) (32-bit)

[Affected platforms]:
- all

[Steps to reproduce]:
1. Open https://mystor.github.io/dragndrop/
2. Select the drop-file test from the demo page
3. Select an image file (png, jpg) from your computer and drag it in the "Drop Stuff Here!" area from the demo page

[Expected result]:
- 'Not matching' appears under the "Drop Stuff Here" area and expected result is different from result.

[Actual result]:
- 'Matching' and expected result = result

[Regression range]:
- tbd, doesn't reproduce on Fx 46.0.1

[Additional notes]:
- same behavior with e10s ON/OFF

Comment 1

[Paul Silaghi, QA [:pauly]]

Pushlog:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=b2409b36cd07bba045bf38dd131166c36ea3da4a&tochange=3d0aef4586bdbd81591811ec627c85161fc11065

Comment 2

[Nika Layzell [:nika] (ni? for response)]

The results for drop-file and drop-image are identical as far as the testcase is concerned, so it makes sense that the result prints `Matching`. 

The reason why this doesn't reproduce before bug 906420 is because the test suite compares the data stored in DataTransfer.items, which was only added in that version.