1 files changed, 68 insertions, 0 deletions
diff --git a/test/functional/legacy/076_completefunc_spec.lua b/test/functional/legacy/076_completefunc_spec.lua
new file mode 100644
index 0000000000..8af3be003e
--- /dev/null
+++ b/test/functional/legacy/076_completefunc_spec.lua
@@ -0,0 +1,68 @@
+-- Tests for completefunc/omnifunc.
+
+local helpers = require('test.functional.helpers')
+local feed, insert, source = helpers.feed, helpers.insert, helpers.source
+local clear, expect, execute = helpers.clear, helpers.expect, helpers.execute
+
+describe('completefunc', function()
+  setup(clear)
+
+  it('is working', function()
+    insert([=[
+      +++
+      one
+      two
+      three]=])
+
+    -- Test that nothing happens if the 'completefunc' opens
+    -- a new window (no completion, no crash).
+    source([=[
+      function! DummyCompleteOne(findstart, base)
+        if a:findstart
+          return 0
+        else
+          wincmd n
+          return ['onedef', 'oneDEF']
+        endif
+      endfunction
+      setlocal completefunc=DummyCompleteOne
+      /^one
+    ]=])
+    feed('A<C-X><C-U><C-N><esc>')
+    execute('q!')
+    source([=[
+      function! DummyCompleteTwo(findstart, base)
+        if a:findstart
+          wincmd n
+          return 0
+        else
+          return ['twodef', 'twoDEF']
+        endif
+      endfunction
+      setlocal completefunc=DummyCompleteTwo
+      /^two
+    ]=])
+    feed('A<C-X><C-U><C-N><esc>')
+    execute('q!')
+    -- Test that 'completefunc' works when it's OK.
+    source([=[
+      function! DummyCompleteThree(findstart, base)
+        if a:findstart
+          return 0
+        else
+          return ['threedef', 'threeDEF']
+        endif
+      endfunction
+      setlocal completefunc=DummyCompleteThree
+      /^three
+    ]=])
+    feed('A<C-X><C-U><C-N><esc>')
+
+    -- Assert buffer contents.
+    expect([=[
+      +++
+      
+      two
+      threeDEF]=])
+  end)
+end)