Fix #271 - Add the ability to open the quickfix or loclist windows only after saving a file

test/test_lint_file_linters.vader

@@ -81,6 +81,8 @@ Before:
 After:
   Restore
 
+  unlet! b:ale_save_event_fired
+  unlet! b:ale_enabled
   unlet g:buffer_result
   let g:ale_buffer_info = {}
   call ale#linter#Reset()
@@ -251,3 +253,17 @@ Execute(The Save event should respect the buffer number):
   \   'type': 'E',
   \ },
   \], GetSimplerLoclist()
+
+Execute(The Save event should set b:ale_save_event_fired to 1):
+  let b:ale_enabled = 0
+  call ale#events#SaveEvent(bufnr(''))
+
+  " This flag needs to be set so windows can be opened, etc.
+  AssertEqual 1, b:ale_save_event_fired
+
+Execute(b:ale_save_event_fired should be set to 0 when results are set):
+  let b:ale_save_event_fired = 1
+
+  call ale#engine#SetResults(bufnr(''), [])
+
+  AssertEqual 0, b:ale_save_event_fired

test/test_list_opening.vader

@@ -34,6 +34,10 @@ After:
 
   unlet! g:loclist
   unlet! b:ale_list_window_size
+  unlet! b:ale_open_list
+  unlet! b:ale_keep_list_window_open
+  unlet! b:ale_save_event_fired
+
   delfunction GetQuickfixHeight
 
   " Close quickfix window after every execute block
@@ -163,3 +167,33 @@ Execute(The quickfix window height should be correct for the quickfix list with
   call ale#list#CloseWindowIfNeeded(bufnr(''))
 
   AssertEqual 8, GetQuickfixHeight()
+
+Execute(The buffer ale_open_list option should be respected):
+  let b:ale_open_list = 1
+
+  call ale#list#SetLists(bufnr('%'), g:loclist)
+  Assert ale#list#IsQuickfixOpen()
+
+Execute(The buffer ale_keep_list_window_open option should be respected):
+  let b:ale_open_list = 1
+  let b:ale_keep_list_window_open = 1
+
+  call ale#list#SetLists(bufnr('%'), g:loclist)
+  call ale#list#CloseWindowIfNeeded(bufnr(''))
+  call ale#list#SetLists(bufnr('%'), [])
+  call ale#list#CloseWindowIfNeeded(bufnr(''))
+
+  Assert ale#list#IsQuickfixOpen()
+
+Execute(The ale_open_list='on_save' option should work):
+  let b:ale_open_list = 'on_save'
+
+  call ale#list#SetLists(bufnr('%'), g:loclist)
+  " The list shouldn't open yet, the event wasn't fired.
+  Assert !ale#list#IsQuickfixOpen()
+
+  let b:ale_save_event_fired = 1
+
+  call ale#list#SetLists(bufnr('%'), g:loclist)
+  " Now the list should have opened.
+  Assert ale#list#IsQuickfixOpen()