Before:
  Save g:ale_sql_pgformatter_executable
  Save g:ale_sql_pgformatter_options

After:
  Restore

Execute(The pgFormatter callback should return the correct default values):
  AssertEqual
  \ {
  \   'command': ale#Escape('pg_format')
  \ },
  \ ale#fixers#pgformatter#Fix(bufnr(''))

Execute(The pgFormatter executable and options should be configurable):
  let g:ale_sql_pgformatter_executable = '/path/to/pg_format'
  let g:ale_sql_pgformatter_options = '-n'

  AssertEqual
  \ {
  \   'command': ale#Escape('/path/to/pg_format')
  \     . ' -n',
  \ },
  \ ale#fixers#pgformatter#Fix(bufnr(''))