Fix config and executable issues with the textlint linter

test/command_callback/test_textlint_command_callbacks.vader

@@ -0,0 +1,91 @@
+" Author: januswel, w0rp
+
+Before:
+  Save g:ale_textlint_executable
+  Save g:ale_textlint_use_global
+  Save g:ale_textlint_options
+
+  unlet! g:ale_textlint_executable
+  unlet! b:ale_textlint_executable
+  unlet! g:ale_textlint_use_global
+  unlet! b:ale_textlint_use_global
+  unlet! g:ale_textlint_options
+  unlet! b:ale_textlint_options
+
+  runtime autoload/ale/handlers/textlint.vim
+
+  call ale#test#SetDirectory('/testplugin/test/command_callback')
+
+After:
+  Restore
+
+  unlet! b:command_tail
+  unlet! b:ale_textlint_executable
+  unlet! b:ale_textlint_use_global
+  unlet! b:ale_textlint_options
+
+  call ale#test#RestoreDirectory()
+  call ale#linter#Reset()
+
+Execute(The executable should be configurable):
+  AssertEqual 'textlint', ale#handlers#textlint#GetExecutable(bufnr(''))
+
+  let b:ale_textlint_executable = 'foobar'
+
+  AssertEqual 'foobar', ale#handlers#textlint#GetExecutable(bufnr(''))
+
+Execute(The executable should be used in the command):
+  AssertEqual
+  \ ale#Escape('textlint') . ' -f json %t',
+  \ ale#handlers#textlint#GetCommand(bufnr(''))
+
+  let b:ale_textlint_executable = 'foobar'
+
+  AssertEqual
+  \ ale#Escape('foobar') . ' -f json %t',
+  \ ale#handlers#textlint#GetCommand(bufnr(''))
+  \
+
+Execute(The options should be configurable):
+  let b:ale_textlint_options = '--something'
+
+  AssertEqual
+  \ ale#Escape('textlint') . ' --something -f json %t',
+  \ ale#handlers#textlint#GetCommand(bufnr(''))
+
+Execute(The local executable from .bin should be used if available):
+  call ale#test#SetFilename('textlint_paths/with_bin_path/foo.txt')
+
+  AssertEqual
+  \ ale#path#Simplify(g:dir . '/textlint_paths/with_bin_path/node_modules/.bin/textlint'),
+  \ ale#handlers#textlint#GetExecutable(bufnr(''))
+
+  AssertEqual
+  \ ale#Escape(g:dir . '/textlint_paths/with_bin_path/node_modules/.bin/textlint') . ' -f json %t',
+  \ ale#handlers#textlint#GetCommand(bufnr(''))
+
+Execute(The local executable from textlint/bin should be used if available):
+  call ale#test#SetFilename('textlint_paths/with_textlint_bin_path/foo.txt')
+
+  AssertEqual
+  \ ale#path#Simplify(g:dir . '/textlint_paths/with_textlint_bin_path/node_modules/textlint/bin/textlint.js'),
+  \ ale#handlers#textlint#GetExecutable(bufnr(''))
+
+  if has('win32')
+    AssertEqual
+    \ ale#Escape('node.exe') . ' ' . ale#Escape(g:dir . '/textlint_paths/with_textlint_bin_path/node_modules/textlint/bin/textlint.js') . ' -f json %t',
+    \ ale#handlers#textlint#GetCommand(bufnr(''))
+  else
+    AssertEqual
+    \ ale#Escape(g:dir . '/textlint_paths/with_textlint_bin_path/node_modules/textlint/bin/textlint.js') . ' -f json %t',
+    \ ale#handlers#textlint#GetCommand(bufnr(''))
+  endif
+
+Execute(Configuration files should be discovered):
+  call ale#test#SetFilename('textlint_paths/with_config_path/foo.txt')
+
+  AssertEqual
+  \ ale#Escape('textlint')
+  \   . ' -c ' . ale#Escape(g:dir . '/textlint_paths/with_config_path/.textlintrc')
+  \   . ' -f json %t',
+  \ ale#handlers#textlint#GetCommand(bufnr(''))