[ruby/reline] Refactor key actor test (https://github.com/ruby/reline/pull/645)
Add assertion assert_cursor_line to test helper
Autofix key_actor test to use assert_cursor_line
Rename the assertion to assert_line_around_cursor and remove other assertions for line and cursor
https://github.com/ruby/reline/commit/e4773800c6
[ruby/reline] Refactor key actor test
(https://github.com/ruby/reline/pull/645)
Add assertion assert_cursor_line to test helper
Autofix key_actor test to use assert_cursor_line
Rename the assertion to assert_line_around_cursor and remove other assertions for line and cursor
https://github.com/ruby/reline/commit/e4773800c6