Close #1753 - Implement minimum viable integration with Deoplete

4 files changed, 199 insertions, 15 deletions

diff --git a/test/completion/test_completion_events.vader b/test/completion/test_completion_events.vader
index d04a8085..f79773cc 100644
--- a/test/completion/test_completion_events.vader
+++ b/test/completion/test_completion_events.vader
@@ -27,7 +27,7 @@ Before:
     let g:get_completions_called = 0
 
     " We just want to check if the function is called.
-    function! ale#completion#GetCompletions(manual)
+    function! ale#completion#GetCompletions(source)
       let g:get_completions_called = 1
     endfunction
 
@@ -57,6 +57,7 @@ After:
   unlet! b:ale_completion_info
   unlet! b:ale_completion_response
   unlet! b:ale_completion_parser
+  unlet! b:ale_completion_result
   unlet! b:ale_complete_done_time
 
   delfunction CheckCompletionCalled
@@ -86,7 +87,7 @@ Execute(ale#completion#GetCompletions should not be called when the cursor posit
   call setpos('.', [bufnr(''), 1, 2, 0])
 
   " We just want to check if the function is called.
-  function! ale#completion#GetCompletions(manual)
+  function! ale#completion#GetCompletions(source)
     let g:get_completions_called = 1
   endfunction
 
@@ -105,7 +106,7 @@ Execute(ale#completion#GetCompletions should not be called if you switch to norm
   let g:fake_mode = 'n'
 
   " We just want to check if the function is called.
-  function! ale#completion#GetCompletions(manual)
+  function! ale#completion#GetCompletions(source)
     let g:get_completions_called = 1
   endfunction
 
@@ -124,6 +125,7 @@ Execute(Completion should not be done shortly after the CompleteDone function):
 Execute(ale#completion#Show() should remember the omnifunc setting and replace it):
   let &l:omnifunc = 'FooBar'
 
+  let b:ale_completion_info = {'source': 'ale-automatic'}
   call ale#completion#Show('Response', 'Parser')
 
   AssertEqual 'FooBar', b:ale_old_omnifunc
@@ -136,6 +138,7 @@ Execute(ale#completion#Show() should remember the omnifunc setting and replace i
 Execute(ale#completion#Show() should remember the completeopt setting and replace it):
   let &l:completeopt = 'menu'
 
+  let b:ale_completion_info = {'source': 'ale-automatic'}
   call ale#completion#Show('Response', 'Parser')
 
   AssertEqual 'menu', b:ale_old_completeopt
@@ -148,6 +151,7 @@ Execute(ale#completion#Show() should remember the completeopt setting and replac
 Execute(ale#completion#Show() should set the preview option if it's set):
   let &l:completeopt = 'menu,preview'
 
+  let b:ale_completion_info = {'source': 'ale-automatic'}
   call ale#completion#Show('Response', 'Parser')
 
   AssertEqual 'menu,preview', b:ale_old_completeopt
@@ -158,7 +162,7 @@ Execute(ale#completion#Show() should set the preview option if it's set):
   AssertEqual [["\<Plug>(ale_show_completion_menu)"]], g:feedkeys_calls
 
 Execute(ale#completion#Show() should not replace the completeopt setting for manual completion):
-  let b:ale_completion_info = {'manual': 1}
+  let b:ale_completion_info = {'source': 'ale-manual'}
 
   let &l:completeopt = 'menu,preview'
 
@@ -173,6 +177,7 @@ Execute(ale#completion#Show() should not replace the completeopt setting for man
 Execute(ale#completion#OmniFunc() should also remember the completeopt setting and replace it):
   let &l:completeopt = 'menu'
 
+  let b:ale_completion_info = {'source': 'ale-automatic'}
   call ale#completion#OmniFunc(0, '')
 
   AssertEqual 'menu', b:ale_old_completeopt
@@ -181,18 +186,35 @@ Execute(ale#completion#OmniFunc() should also remember the completeopt setting a
 Execute(ale#completion#OmniFunc() should set the preview option if it's set):
   let &l:completeopt = 'menu,preview'
 
+  let b:ale_completion_info = {'source': 'ale-automatic'}
   call ale#completion#OmniFunc(0, '')
 
   AssertEqual 'menu,preview', b:ale_old_completeopt
   AssertEqual 'menu,menuone,preview,noselect,noinsert', &l:completeopt
 
-Execute(ale#completion#Show() should make the correct feedkeys() call):
+Execute(ale#completion#Show() should make the correct feedkeys() call for automatic completion):
+  let b:ale_completion_info = {'source': 'ale-automatic'}
   call ale#completion#Show('Response', 'Parser')
 
   AssertEqual [], g:feedkeys_calls
   sleep 1ms
   AssertEqual [["\<Plug>(ale_show_completion_menu)"]], g:feedkeys_calls
 
+Execute(ale#completion#Show() should make the correct feedkeys() call for manual completion):
+  let b:ale_completion_info = {'source': 'ale-automatic'}
+  call ale#completion#Show('Response', 'Parser')
+
+  AssertEqual [], g:feedkeys_calls
+  sleep 1ms
+  AssertEqual [["\<Plug>(ale_show_completion_menu)"]], g:feedkeys_calls
+
+Execute(ale#completion#Show() should not call feedkeys() for other sources):
+  let b:ale_completion_info = {'source': 'deoplete'}
+  call ale#completion#Show('Response', 'Parser')
+
+  sleep 1ms
+  AssertEqual [], g:feedkeys_calls
+
 Execute(ale#completion#Show() shouldn't do anything if you switch back to normal mode):
   let &l:completeopt = 'menu,preview'
   let g:fake_mode = 'n'
@@ -247,9 +269,10 @@ Execute(The completion request_id should be reset when queuing again):
 
   AssertEqual 0, b:ale_completion_info.request_id
 
-Execute(b:ale_completion_info should be set up correctly when requesting completions):
+Execute(b:ale_completion_info should be set up correctly when requesting completions automatically):
+  let b:ale_completion_result = []
   call setpos('.', [bufnr(''), 3, 14, 0])
-  call ale#completion#GetCompletions(0)
+  call ale#completion#GetCompletions('ale-automatic')
 
   AssertEqual
   \ {
@@ -259,11 +282,13 @@ Execute(b:ale_completion_info should be set up correctly when requesting complet
   \   'line_length': 14,
   \   'line': 3,
   \   'prefix': 'ab',
-  \   'manual': 0,
+  \   'source': 'ale-automatic',
   \ },
   \ b:ale_completion_info
+  Assert !exists('b:ale_completion_result')
 
-Execute(b:ale_completion_info should be set up correctly when requesting completions):
+Execute(b:ale_completion_info should be set up correctly when requesting completions manually):
+  let b:ale_completion_result = []
   call setpos('.', [bufnr(''), 3, 14, 0])
   ALEComplete
 
@@ -275,9 +300,28 @@ Execute(b:ale_completion_info should be set up correctly when requesting complet
   \   'line_length': 14,
   \   'line': 3,
   \   'prefix': 'ab',
-  \   'manual': 1,
+  \   'source': 'ale-manual',
+  \ },
+  \ b:ale_completion_info
+  Assert !exists('b:ale_completion_result')
+
+Execute(b:ale_completion_info should be set up correctly for other sources):
+  let b:ale_completion_result = []
+  call setpos('.', [bufnr(''), 3, 14, 0])
+  call ale#completion#GetCompletions('deoplete')
+
+  AssertEqual
+  \ {
+  \   'request_id': 0,
+  \   'conn_id': 0,
+  \   'column': 14,
+  \   'line_length': 14,
+  \   'line': 3,
+  \   'prefix': 'ab',
+  \   'source': 'deoplete',
   \ },
   \ b:ale_completion_info
+  Assert !exists('b:ale_completion_result')
 
 Execute(The correct keybinds should be configured):
   redir => g:output
diff --git a/test/completion/test_lsp_completion_messages.vader b/test/completion/test_lsp_completion_messages.vader
index dce61e36..25536436 100644
--- a/test/completion/test_lsp_completion_messages.vader
+++ b/test/completion/test_lsp_completion_messages.vader
@@ -102,7 +102,7 @@ Execute(The right message should be sent for the initial tsserver request):
   " The cursor position needs to match what was saved before.
   call setpos('.', [bufnr(''), 1, 3, 0])
 
-  call ale#completion#GetCompletions(0)
+  call ale#completion#GetCompletions('ale-automatic')
 
   " We shouldn't register the callback yet.
   AssertEqual '''''', string(g:Callback)
@@ -129,7 +129,7 @@ Execute(The right message should be sent for the initial tsserver request):
   \   'request_id': 1,
   \   'line': 1,
   \   'prefix': 'fo',
-  \   'manual': 0,
+  \   'source': 'ale-automatic',
   \ },
   \ get(b:, 'ale_completion_info', {})
 
@@ -191,7 +191,7 @@ Execute(The right message should be sent for the initial LSP request):
   " The cursor position needs to match what was saved before.
   call setpos('.', [bufnr(''), 1, 5, 0])
 
-  call ale#completion#GetCompletions(0)
+  call ale#completion#GetCompletions('ale-automatic')
 
   " We shouldn't register the callback yet.
   AssertEqual '''''', string(g:Callback)
@@ -234,7 +234,7 @@ Execute(The right message should be sent for the initial LSP request):
   \   'request_id': 1,
   \   'line': 1,
   \   'prefix': 'fo',
-  \   'manual': 0,
+  \   'source': 'ale-automatic',
   \   'completion_filter': 'ale#completion#python#CompletionItemFilter',
   \ },
   \ get(b:, 'ale_completion_info', {})
@@ -260,7 +260,7 @@ Execute(Two completion requests shouldn't be sent in a row):
   " The cursor position needs to match what was saved before.
   call setpos('.', [bufnr(''), 1, 5, 0])
 
-  call ale#completion#GetCompletions(0)
+  call ale#completion#GetCompletions('ale-automatic')
 
   " We shouldn't register the callback yet.
   AssertEqual '''''', string(g:Callback)
diff --git a/test/python/test_deoplete_source.py b/test/python/test_deoplete_source.py
new file mode 100644
index 00000000..960abe3a
--- /dev/null
+++ b/test/python/test_deoplete_source.py
@@ -0,0 +1,130 @@
+import unittest
+import imp
+
+ale_module = imp.load_source(
+    'deoplete.sources.ale',
+    '/testplugin/rplugin/python3/deoplete/sources/ale.py',
+)
+
+
+class VimMock(object):
+    def __init__(self, call_list, call_results):
+        self.__call_list = call_list
+        self.__call_results = call_results
+
+    def call(self, function, *args):
+        self.__call_list.append((function, args))
+
+        return self.__call_results.get(function, 0)
+
+
+class DeopleteSourceTest(unittest.TestCase):
+    def setUp(self):
+        super(DeopleteSourceTest, self).setUp()
+
+        self.call_list = []
+        self.call_results = {}
+        self.source = ale_module.Source('vim')
+        self.source.vim = VimMock(self.call_list, self.call_results)
+
+    def test_attributes(self):
+        """
+        Check all of the attributes we set.
+        """
+        attributes = dict(
+            (key, getattr(self.source, key))
+            for key in
+            dir(self.source)
+            if not key.startswith('__')
+            and key != 'vim'
+            and not hasattr(getattr(self.source, key), '__self__')
+        )
+
+        self.assertEqual(attributes, {
+            'is_bytepos': True,
+            'mark': '[L]',
+            'min_pattern_length': 1,
+            'name': 'ale',
+            'rank': 100,
+        })
+
+    def test_completion_position(self):
+        self.call_results['ale#completion#GetCompletionPosition'] = 2
+
+        self.assertEqual(self.source.get_completion_position(), 2)
+        self.assertEqual(self.call_list, [
+            ('ale#completion#GetCompletionPosition', ()),
+        ])
+
+    def test_request_completion_results(self):
+        context = {'is_async': False}
+
+        self.assertEqual(self.source.gather_candidates(context), [])
+        self.assertEqual(context, {'is_async': True})
+        self.assertEqual(self.call_list, [
+            ('ale#completion#GetCompletions', ('deoplete',)),
+        ])
+
+    def test_refresh_completion_results(self):
+        context = {'is_async': False}
+
+        self.assertEqual(self.source.gather_candidates(context), [])
+        self.assertEqual(context, {'is_async': True})
+        self.assertEqual(self.call_list, [
+            ('ale#completion#GetCompletions', ('deoplete',)),
+        ])
+
+        context = {'is_async': True, 'is_refresh': True}
+
+        self.assertEqual(self.source.gather_candidates(context), [])
+        self.assertEqual(context, {'is_async': True, 'is_refresh': True})
+        self.assertEqual(self.call_list, [
+            ('ale#completion#GetCompletions', ('deoplete',)),
+            ('ale#completion#GetCompletions', ('deoplete',)),
+        ])
+
+    def test_poll_no_result(self):
+        context = {'is_async': True}
+        self.call_results['ale#completion#GetCompletionResult'] = None
+
+        self.assertEqual(self.source.gather_candidates(context), [])
+        self.assertEqual(context, {'is_async': True})
+        self.assertEqual(self.call_list, [
+            ('ale#completion#GetCompletionResult', ()),
+        ])
+
+    def test_poll_empty_result_ready(self):
+        context = {'is_async': True}
+        self.call_results['ale#completion#GetCompletionResult'] = []
+
+        self.assertEqual(self.source.gather_candidates(context), [])
+        self.assertEqual(context, {'is_async': False})
+        self.assertEqual(self.call_list, [
+            ('ale#completion#GetCompletionResult', ()),
+        ])
+
+    def test_poll_non_empty_result_ready(self):
+        context = {'is_async': True}
+        self.call_results['ale#completion#GetCompletionResult'] = [
+            {
+                'word': 'foobar',
+                'kind': 'v',
+                'icase': 1,
+                'menu': '',
+                'info': '',
+            },
+        ]
+
+        self.assertEqual(self.source.gather_candidates(context), [
+            {
+                'word': 'foobar',
+                'kind': 'v',
+                'icase': 1,
+                'menu': '',
+                'info': '',
+            },
+        ])
+        self.assertEqual(context, {'is_async': False})
+        self.assertEqual(self.call_list, [
+            ('ale#completion#GetCompletionResult', ()),
+        ])
diff --git a/test/script/custom-checks b/test/script/custom-checks
index d4027fec..20dbfb80 100755
--- a/test/script/custom-checks
+++ b/test/script/custom-checks
@@ -67,4 +67,14 @@ echo
 
 test/script/check-toc || exit_code=$?
 
+echo '========================================'
+echo 'Check Python code'
+echo '========================================'
+echo
+
+docker run --rm -v "$PWD:/testplugin" "$DOCKER_RUN_IMAGE" \
+    python -W ignore -m unittest discover /testplugin/test/python \
+    || exit_code=$?
+echo
+
 exit $exit_code