Before:
  Save g:ale_cs_mcsc_options
  Save g:ale_cs_mcsc_source
  Save g:ale_cs_mcsc_assembly_path
  Save g:ale_cs_mcsc_assemblies
  Save g:ale_buffer_info

  let g:ale_buffer_info = {bufnr(''): {'temporary_file_list': []}}

  unlet! g:ale_cs_mcsc_options
  unlet! g:ale_cs_mcsc_source
  unlet! g:ale_cs_mcsc_assembly_path
  unlet! g:ale_cs_mcsc_assemblies

  let g:prefix = ' -out:TEMP -t:module -recurse:' . ale#Escape('*.cs')

  function! GetCommand()
    let l:command = ale_linters#cs#mcsc#GetCommand(bufnr(''))
    let l:command = join(split(l:command))

    return substitute(l:command, ':[^ ]\+ -t:module', ':TEMP -t:module', '')
  endfunction

  runtime ale_linters/cs/mcsc.vim

After:
  Restore

  unlet! b:ale_cs_mcsc_options
  unlet! g:ale_cs_mcsc_source
  unlet! g:ale_cs_mcsc_assembly_path
  unlet! g:ale_cs_mcsc_assemblies
  unlet! g:ale_prefix

  delfunction GetCommand

  call ale#linter#Reset()

Execute(The mcsc linter should return the correct default command):
  AssertEqual
  \ ale#path#BufferCdString(bufnr(''))
  \   . 'mcs -unsafe' . g:prefix,
  \ GetCommand()

Execute(The options should be be used in the command):
  let g:ale_cs_mcsc_options = '-pkg:dotnet'

  AssertEqual
  \ ale#path#BufferCdString(bufnr(''))
  \   . 'mcs -unsafe -pkg:dotnet' . g:prefix,
  \ GetCommand()

Execute(The souce path should be be used in the command):
  let g:ale_cs_mcsc_source = '../foo/bar'

  AssertEqual
  \ 'cd ' . ale#Escape('../foo/bar') . ' && '
  \   . 'mcs -unsafe' . g:prefix,
  \ GetCommand()

Execute(The list of search pathes for assemblies should be be used in the command if not empty):
  let g:ale_cs_mcsc_assembly_path = ['/usr/lib/mono', '../foo/bar']

  AssertEqual
  \ ale#path#BufferCdString(bufnr(''))
  \   . 'mcs -unsafe'
  \   . ' -lib:' . ale#Escape('/usr/lib/mono') . ',' . ale#Escape('../foo/bar')
  \   . g:prefix,
  \ GetCommand()

  let g:ale_cs_mcsc_assembly_path = []

  AssertEqual
  \ ale#path#BufferCdString(bufnr(''))
  \   . 'mcs -unsafe' . g:prefix,
  \ GetCommand()

Execute(The list of assemblies should be be used in the command if not empty):
  let g:ale_cs_mcsc_assemblies = ['foo.dll', 'bar.dll']

  AssertEqual
  \ ale#path#BufferCdString(bufnr(''))
  \   .  'mcs -unsafe'
  \   . ' -r:' . ale#Escape('foo.dll') . ',' . ale#Escape('bar.dll')
  \   . g:prefix,
  \ GetCommand()

  let g:ale_cs_mcsc_assemblies = []

  AssertEqual
  \ ale#path#BufferCdString(bufnr(''))
  \   . 'mcs -unsafe' . g:prefix,
  \ GetCommand()