tree 87323e2f5a144c5baab1895601a7c8fb90628a60
parent d49e157b52052937d6b8db47ec99af56130e284e
author Ben Rohlfs <brohlfs@google.com> 1652872820 +0200
committer Ben Rohlfs <brohlfs@google.com> 1652872820 +0200

Make image diff testing more robust

There is some flakiness to be seen in tests recently like:

```
      + expected - actual

      -image/bmp
      +1��1 image/bmp
```

Release-Notes: skip
Change-Id: Iaf0f0c8b692167bcfeb2b5e0dc8d26dc21e05367