Also consolidate Tesla mocks into the HttpRequestMock module.
Tests were not exercising the real codepaths. The Rich Media Preview only works with https, but most of these tests were only mocking http.
The Rich Media Previews were not regenerated when a post was updated due to a cache invalidation issue. They are now cached by the activity id so they can be evicted with the other activity cache objects in the :scrubber_cache.
Elixir 1.13 does not allow them in raw form anymore, resulting in errors
like this when running the test:
== Compilation error in file test/pleroma/web/rich_media/parser_test.exs ==
** (SyntaxError) test/pleroma/web/rich_media/parser_test.exs:136:45: invalid bidirectional formatting character in string: \u202C. If you want to use such character, use it in its escaped \u202C form instead
In general, tests that match these criteria can be made async:
- Doesn't use real Cachex.
- Doesn't write to the Config / Application Environment.
- Uses Mock. Using Mox is fine.
- Uses the streamer.
