patch 8.1.0559: command line completion not sufficiently tested

Problem:    Command line completion not sufficiently tested.
Solution:   Add more tests. (Dominique Pelle, closes #3622)

src/testdir/test_arglist.vim

@@ -396,6 +396,18 @@ func Test_argdelete()
   %argd
 endfunc
 
+func Test_argdelete_completion()
+  args foo bar
+
+  call feedkeys(":argdelete \<C-A>\<C-B>\"\<CR>", 'tx')
+  call assert_equal('"argdelete bar foo', @:)
+
+  call feedkeys(":argdelete x \<C-A>\<C-B>\"\<CR>", 'tx')
+  call assert_equal('"argdelete x bar foo', @:)
+
+  %argd
+endfunc
+
 " Tests for the :next, :prev, :first, :last, :rewind commands
 func Test_argpos()
   call Reset_arglist()

src/testdir/test_filetype.vim

@@ -597,3 +597,7 @@ func Test_script_detection()
   filetype off
 endfunc
 
+func Test_setfiletype_completion()
+  call feedkeys(":setfiletype java\<C-A>\<C-B>\"\<CR>", 'tx')
+  call assert_equal('"setfiletype java javacc javascript', @:)
+endfunc

src/testdir/test_history.vim

@@ -104,3 +104,8 @@ function Test_Search_history_window()
   call assert_equal('a', @/)
   bwipe!
 endfunc
+
+function Test_history_completion()
+  call feedkeys(":history \<C-A>\<C-B>\"\<CR>", 'tx')
+  call assert_equal('"history / : = > ? @ all cmd debug expr input search', @:)
+endfunc

src/testdir/test_messages.vim

@@ -59,3 +59,8 @@ function! Test_stopinsert_does_not_break_message_output()
 
   set cmdheight&
 endfunction
+
+func Test_message_completion()
+  call feedkeys(":message \<C-A>\<C-B>\"\<CR>", 'tx')
+  call assert_equal('"message clear', @:)
+endfunc

src/testdir/test_syntax.vim

@@ -119,6 +119,15 @@ func Test_syntime()
   bd
 endfunc
 
+func Test_syntime_completion()
+  if !has('profile')
+    return
+  endif
+
+  call feedkeys(":syntime \<C-A>\<C-B>\"\<CR>", 'tx')
+  call assert_equal('"syntime clear off on report', @:)
+endfunc
+
 func Test_syntax_list()
   syntax on
   let a = execute('syntax list')

src/version.c

@@ -792,6 +792,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    559,
 /**/
     558,
 /**/