Before:
  call ale#assert#SetUpLinterTest('c', 'cppcheck')
  let b:command_tail = ' -q --language=c --template=' . ale#Escape('{file}:{line}:{column}: {severity}:{inconclusive:inconclusive:} {message} [{id}]\\n{code}') . ' --enable=style -I' . ale#Escape(ale#path#Simplify(g:dir)) .' %t'

After:
  " Remove a test file we might open for some tests.
  if &buftype != 'nofile'
    :q!
    set buftype=nofile
  endif

  unlet! b:command_tail
  call ale#assert#TearDownLinterTest()

Execute(The executable should be configurable):
  AssertLinter 'cppcheck', ale#Escape('cppcheck') . b:command_tail

  let b:ale_c_cppcheck_executable = 'foobar'

  AssertLinterCwd ''
  AssertLinter 'foobar', ale#Escape('foobar') . b:command_tail

Execute(cppcheck for C should detect compile_commands.json files):
  call ale#test#SetFilename('cppcheck_paths/one/foo.c')

  AssertLinterCwd ale#path#Simplify(g:dir . '/cppcheck_paths/one')
  AssertLinter 'cppcheck', ale#Escape('cppcheck')
  \   . ' -q --language=c'
  \   . ' --template=' . ale#Escape('{file}:{line}:{column}: {severity}:{inconclusive:inconclusive:} {message} [{id}]\\n{code}')
  \   . ' --project=' . ale#Escape('compile_commands.json')
  \   . ' --enable=style %t'

Execute(cppcheck for C should detect compile_commands.json files in build directories):
  call ale#test#SetFilename('cppcheck_paths/with_build_dir/foo.cpp')

  AssertLinterCwd ale#path#Simplify(g:dir . '/cppcheck_paths/with_build_dir')
  AssertLinter 'cppcheck', ale#Escape('cppcheck')
  \   . ' -q --language=c'
  \   . ' --template=' . ale#Escape('{file}:{line}:{column}: {severity}:{inconclusive:inconclusive:} {message} [{id}]\\n{code}')
  \   . ' --project=' . ale#Escape(ale#path#Simplify('build/compile_commands.json'))
  \   . ' --enable=style %t'

Execute(cppcheck for C should include file dir if compile_commands.json file is not found):
  call ale#test#SetFilename('cppcheck_paths/foo.cpp')

  AssertLinter 'cppcheck',
  \   ale#Escape('cppcheck')
  \   . ' -q --language=c'
  \   . ' --template=' . ale#Escape('{file}:{line}:{column}: {severity}:{inconclusive:inconclusive:} {message} [{id}]\\n{code}')
  \   . ' --enable=style'
  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir . '/cppcheck_paths'))
  \   . ' %t'

Execute(cppcheck for C should ignore compile_commands.json file if buffer is modified):
  call ale#test#SetFilename('cppcheck_paths/one/foo.c')

  set buftype=
  set modified

  AssertLinterCwd ale#path#Simplify(g:dir . '/cppcheck_paths/one')
  AssertLinter 'cppcheck', ale#Escape('cppcheck')
  \   . ' -q --language=c'
  \   . ' --template=' . ale#Escape('{file}:{line}:{column}: {severity}:{inconclusive:inconclusive:} {message} [{id}]\\n{code}')
  \   . ' --enable=style'
  \   . ' -I' . ale#Escape(ale#path#Simplify(g:dir . '/cppcheck_paths/one'))
  \   . ' %t'