Before:
  call ale#assert#SetUpLinterTest('crystal', 'ameba')
  call ale#test#SetFilename('dummy.cr')

  let g:ale_crystal_ameba_executable = 'bin/ameba'

After:
  call ale#assert#TearDownLinterTest()

Execute(Executable should default to bin/ameba):
  AssertLinter 'bin/ameba', ale#Escape('bin/ameba')
  \   . ' --format json '
  \   . ale#Escape(ale#path#Simplify(g:dir . '/dummy.cr'))

Execute(Should be able to set a custom executable):
  let g:ale_crystal_ameba_executable = 'ameba'

  AssertLinter 'ameba' , ale#Escape('ameba')
  \   . ' --format json '
  \   . ale#Escape(ale#path#Simplify(g:dir . '/dummy.cr'))