Before:
  runtime ale_linters/qml/qmlfmt.vim

After:
  let g:ale_qml_qmlfmt_executable = 'qmlfmt'

  call ale#linter#Reset()

Execute(The qml qmlfmt command callback should return the correct default string):
  AssertEqual ale#Escape('qmlfmt') . ' -e',
  \ join(split(ale_linters#qml#qmlfmt#GetCommand(1)))

Execute(The qmlfmt executable should be configurable):
  let g:ale_qml_qmlfmt_executable = '~/.local/bin/qmlfmt'

  AssertEqual '~/.local/bin/qmlfmt', ale_linters#qml#qmlfmt#GetExecutable(1)
  AssertEqual ale#Escape('~/.local/bin/qmlfmt') . ' -e',
  \ join(split(ale_linters#qml#qmlfmt#GetCommand(1)))