Before:
  call ale#test#SetDirectory('/testplugin/test/fixers')

After:
  call ale#test#RestoreDirectory()
  call ale#semver#ResetVersionCache()

Execute(The executable path should be correct):
  call ale#test#SetFilename('../eslint-test-files/react-app/subdir/testfile.js')

  " eslint_d output with an older eslint version is used here.
  AssertEqual
  \ {
  \   'read_temporary_file': 1,
  \   'command': (has('win32') ? 'node.exe ' : '')
  \     . ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/react-app/node_modules/eslint/bin/eslint.js'))
  \     . ' -c ' . ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/react-app/.eslintrc.js'))
  \     . ' --fix %t',
  \ },
  \ ale#fixers#eslint#ApplyFixForVersion(bufnr(''), ['v4.4.1 (eslint_d v5.1.0)'])

Execute(The lower priority configuration file in a nested directory should be preferred):
  call ale#test#SetFilename('../eslint-test-files/react-app/subdir-with-config/testfile.js')

  AssertEqual
  \ {
  \   'read_temporary_file': 1,
  \   'command': (has('win32') ? 'node.exe ' : '')
  \     . ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/react-app/node_modules/eslint/bin/eslint.js'))
  \     . ' -c ' . ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/react-app/subdir-with-config/.eslintrc'))
  \     . ' --fix %t',
  \ },
  \ ale#fixers#eslint#ApplyFixForVersion(bufnr(''), [])

Execute(package.json should be used as a last resort):
  call ale#test#SetFilename('../eslint-test-files/react-app/subdir-with-package-json/testfile.js')

  AssertEqual
  \ {
  \   'read_temporary_file': 1,
  \   'command': (has('win32') ? 'node.exe ' : '')
  \     . ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/react-app/node_modules/eslint/bin/eslint.js'))
  \     . ' -c ' . ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/react-app/.eslintrc.js'))
  \     . ' --fix %t',
  \ },
  \ ale#fixers#eslint#ApplyFixForVersion(bufnr(''), [])

  call ale#test#SetFilename('../eslint-test-files/package.json')

  AssertEqual
  \ {
  \   'read_temporary_file': 1,
  \   'command':
  \     ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/node_modules/.bin/eslint'))
  \     . ' -c ' . ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/package.json'))
  \     . ' --fix %t',
  \ },
  \ ale#fixers#eslint#ApplyFixForVersion(bufnr(''), [])

Execute(The version check should be correct):
  call ale#test#SetFilename('../eslint-test-files/react-app/subdir/testfile.js')

  AssertEqual
  \ {
  \   'chain_with': 'ale#fixers#eslint#ApplyFixForVersion',
  \   'command': (has('win32') ? 'node.exe ' : '')
  \     . ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/react-app/node_modules/eslint/bin/eslint.js'))
  \     . ' --version'
  \ },
  \ ale#fixers#eslint#Fix(bufnr(''))

Execute(--fix-dry-run should be used for 4.9.0 and up):
  call ale#test#SetFilename('../eslint-test-files/react-app/subdir/testfile.js')

  AssertEqual
  \ {
  \   'command': (has('win32') ? 'node.exe ' : '')
  \     . ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/react-app/node_modules/eslint/bin/eslint.js'))
  \     . ' --stdin-filename %s --stdin --fix-dry-run --format=json',
  \   'process_with': 'ale#fixers#eslint#ProcessFixDryRunOutput',
  \ },
  \ ale#fixers#eslint#ApplyFixForVersion(bufnr(''), ['4.9.0'])

Execute(--fix-to-stdout should be used for eslint_d):
  call ale#test#SetFilename('../eslint-test-files/app-with-eslint-d/testfile.js')

  AssertEqual
  \ {
  \   'read_temporary_file': 1,
  \   'command':
  \     ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/app-with-eslint-d/node_modules/.bin/eslint_d'))
  \     . ' -c ' . ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/package.json'))
  \     . ' --fix %t',
  \ },
  \ ale#fixers#eslint#ApplyFixForVersion(bufnr(''), [''])

  " The option should be used when eslint_d is new enough.
  " We look at the ESLint version instead of the eslint_d version.
  AssertEqual
  \ {
  \   'command':
  \     ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/app-with-eslint-d/node_modules/.bin/eslint_d'))
  \     . ' --stdin-filename %s --stdin --fix-to-stdout',
  \   'process_with': 'ale#fixers#eslint#ProcessEslintDOutput',
  \ },
  \ ale#fixers#eslint#ApplyFixForVersion(bufnr(''), ['v3.19.0 (eslint_d v4.2.0)'])

  " The option should be used for new versions too.
  AssertEqual
  \ {
  \   'command':
  \     ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/app-with-eslint-d/node_modules/.bin/eslint_d'))
  \     . ' --stdin-filename %s --stdin --fix-to-stdout',
  \   'process_with': 'ale#fixers#eslint#ProcessEslintDOutput',
  \ },
  \ ale#fixers#eslint#ApplyFixForVersion(bufnr(''), ['4.9.0'])

Execute(The version number should be cached):
  call ale#test#SetFilename('../eslint-test-files/react-app/subdir-with-config/testfile.js')

  " Call the second callback with the version output.
  call ale#fixers#eslint#ApplyFixForVersion(bufnr(''), ['4.9.0'])

  " The version command should be skipped.
  AssertEqual
  \ {
  \   'chain_with': 'ale#fixers#eslint#ApplyFixForVersion',
  \   'command': '',
  \ },
  \ ale#fixers#eslint#Fix(bufnr(''))

  " Call it again without the version output. We should use the newer command.
  AssertEqual
  \ {
  \   'command': (has('win32') ? 'node.exe ' : '')
  \     . ale#Escape(ale#path#Simplify(g:dir . '/../eslint-test-files/react-app/node_modules/eslint/bin/eslint.js'))
  \     . ' --stdin-filename %s --stdin --fix-dry-run --format=json',
  \   'process_with': 'ale#fixers#eslint#ProcessFixDryRunOutput',
  \ },
  \ ale#fixers#eslint#ApplyFixForVersion(bufnr(''), [])

Execute(The --fix-dry-run post-processor should handle JSON output correctly):
  AssertEqual
  \ [],
  \ ale#fixers#eslint#ProcessFixDryRunOutput(bufnr(''), [])
  AssertEqual
  \ [],
  \ ale#fixers#eslint#ProcessFixDryRunOutput(bufnr(''), [''])
  AssertEqual
  \ [],
  \ ale#fixers#eslint#ProcessFixDryRunOutput(bufnr(''), ['[{}]'])
  AssertEqual
  \ ['foo', 'bar'],
  \ ale#fixers#eslint#ProcessFixDryRunOutput(bufnr(''), ['[{"output": "foo\nbar"}]'])

Execute(The eslint_d post-processor should permit regular JavaScript content):
  AssertEqual
  \ [
  \   'const x = ''Error: foo''',
  \   'const y = 3',
  \ ],
  \ ale#fixers#eslint#ProcessEslintDOutput(bufnr(''), [
  \   'const x = ''Error: foo''',
  \   'const y = 3',
  \ ])

Execute(The eslint_d post-processor should handle error messages correctly):
  AssertEqual
  \ [],
  \ ale#fixers#eslint#ProcessEslintDOutput(bufnr(''), [
  \   'Error: No ESLint configuration found.',
  \ ])