Merge pull request #2567 from theevocater/add_reorder_python_imports

Add support for reorder-python-imports fixer

test/fixers/test_reorder_python_imports_fixer_callback.vader

@@ -0,0 +1,49 @@
+Before:
+  Save g:ale_python_reorder_python_imports_executable
+  Save g:ale_python_reorder_python_imports_options
+
+  " Use an invalid global executable, so we don't match it.
+  let g:ale_python_reorder_python_imports_executable = 'xxxinvalid'
+  let g:ale_python_reorder_python_imports_options = ''
+
+  call ale#test#SetDirectory('/testplugin/test/fixers')
+  silent cd ..
+  silent cd command_callback
+  let g:dir = getcwd()
+
+  let b:bin_dir = has('win32') ? 'Scripts' : 'bin'
+
+After:
+  Restore
+
+  unlet! b:bin_dir
+
+  call ale#test#RestoreDirectory()
+
+Execute(The reorder_python_imports callback should return the correct default values):
+  AssertEqual
+  \ 0,
+  \ ale#fixers#reorder_python_imports#Fix(bufnr(''))
+
+  silent execute 'file ' . fnameescape(g:dir . '/python_paths/with_virtualenv/subdir/foo/bar.py')
+  AssertEqual
+  \ {
+  \   'command': ale#Escape(ale#path#Simplify(g:dir . '/python_paths/with_virtualenv/env/'
+  \     . b:bin_dir . '/reorder-python-imports')) . ' -',
+  \ },
+  \ ale#fixers#reorder_python_imports#Fix(bufnr(''))
+
+Execute(The reorder_python_imports callback should respect custom options):
+  let g:ale_python_reorder_python_imports_options = '--py3-plus'
+
+  AssertEqual
+  \ 0,
+  \ ale#fixers#reorder_python_imports#Fix(bufnr(''))
+
+  silent execute 'file ' . fnameescape(g:dir . '/python_paths/with_virtualenv/subdir/foo/bar.py')
+  AssertEqual
+  \ {
+  \   'command': ale#Escape(ale#path#Simplify(g:dir . '/python_paths/with_virtualenv/env/'
+  \     . b:bin_dir . '/reorder-python-imports')) . ' --py3-plus -',
+  \ },
+  \ ale#fixers#reorder_python_imports#Fix(bufnr(''))