Test fails if trailing whitespaces are removed
test_partials_with_html_entities fails if the trailing whitespaces are removed. The attached patch can be used to reproduce the below problem:
notroot@eb7d0b73147d:/work$ ruby test/unit/lib/redmine/unified_diff_test.rb -n test_partials_with_html_entities DEPRECATION WARNING: `secrets.secret_token` is deprecated in favor of `secret_key_base` and will be removed in Rails 6.0. (called from <top (required)> at /work/config/environment.rb:16) Run options: -n test_partials_with_html_entities --seed 55482 # Running: E Error: Redmine::UnifiedDiffTest#test_partials_with_html_entities: NoMethodError: undefined method `html_line_left' for nil:NilClass test/unit/lib/redmine/unified_diff_test.rb:106:in `test_partials_with_html_entities' bin/rails test test/unit/lib/redmine/unified_diff_test.rb:92
I wasn't able to fix the test without changing the diff, any solution is welcome.