Execute(ReplaceEmDash should not change existing dashes):
  AssertEqual
  \ ['foo - bar', 'baz -- qux -- end'],
  \ ale#fixers#generic#ReplaceEmDash(bufnr(''), ["foo - bar", "baz -- qux \u2014 end"])

Execute(ReplaceEmDash should replace em dashes with double hyphens):
  AssertEqual
  \ ['foo -- bar', 'baz -- qux -- end'],
  \ ale#fixers#generic#ReplaceEmDash(bufnr(''), ["foo \u2014 bar", "baz \u2014 qux \u2014 end"])

Execute(ReplaceEmDash should handle lines without em dashes):
  AssertEqual
  \ ['no dashes here', 'just -- normal'],
  \ ale#fixers#generic#ReplaceEmDash(bufnr(''), ['no dashes here', 'just -- normal'])

Execute(ReplaceEmDash should handle empty input):
  AssertEqual
  \ [],
  \ ale#fixers#generic#ReplaceEmDash(bufnr(''), [])

Execute(RemoveTrailingBlankLines should remove trailing empty lines):
  AssertEqual
  \ ['foo', 'bar'],
  \ ale#fixers#generic#RemoveTrailingBlankLines(bufnr(''), ['foo', 'bar', '', ''])

Execute(RemoveTrailingBlankLines should preserve content when no trailing blanks):
  AssertEqual
  \ ['foo', 'bar'],
  \ ale#fixers#generic#RemoveTrailingBlankLines(bufnr(''), ['foo', 'bar'])