patch 8.1.1063: insufficient testing for wildmenu completion

Problem:    Insufficient testing for wildmenu completion.
Solution:   Extend the test case. (Dominique Pelle, closes #4182)

src/testdir/test_cmdline.vim

@@ -14,14 +14,48 @@ func Test_complete_list()
 endfunc
 
 func Test_complete_wildmenu()
-  call writefile(['testfile1'], 'Xtestfile1')
-  call writefile(['testfile2'], 'Xtestfile2')
+  call mkdir('Xdir1/Xdir2', 'p')
+  call writefile(['testfile1'], 'Xdir1/Xtestfile1')
+  call writefile(['testfile2'], 'Xdir1/Xtestfile2')
+  call writefile(['testfile3'], 'Xdir1/Xdir2/Xtestfile3')
+  call writefile(['testfile3'], 'Xdir1/Xdir2/Xtestfile4')
   set wildmenu
-  call feedkeys(":e Xtest\t\t\r", "tx")
+
+  " Pressing <Tab> completes, and moves to next files when pressing again.
+  call feedkeys(":e Xdir1/\<Tab>\<Tab>\<CR>", 'tx')
+  call assert_equal('testfile1', getline(1))
+  call feedkeys(":e Xdir1/\<Tab>\<Tab>\<Tab>\<CR>", 'tx')
   call assert_equal('testfile2', getline(1))
 
-  call delete('Xtestfile1')
-  call delete('Xtestfile2')
+  " <S-Tab> is like <Tab> but begin with the last match and then go to
+  " previous.
+  call feedkeys(":e Xdir1/Xtest\<S-Tab>\<CR>", 'tx')
+  call assert_equal('testfile2', getline(1))
+  call feedkeys(":e Xdir1/Xtest\<S-Tab>\<S-Tab>\<CR>", 'tx')
+  call assert_equal('testfile1', getline(1))
+
+  " <Left>/<Right> to move to previous/next file.
+  call feedkeys(":e Xdir1/\<Tab>\<Right>\<CR>", 'tx')
+  call assert_equal('testfile1', getline(1))
+  call feedkeys(":e Xdir1/\<Tab>\<Right>\<Right>\<CR>", 'tx')
+  call assert_equal('testfile2', getline(1))
+  call feedkeys(":e Xdir1/\<Tab>\<Right>\<Right>\<Left>\<CR>", 'tx')
+  call assert_equal('testfile1', getline(1))
+
+  " <Up>/<Down> to go up/down directories.
+  call feedkeys(":e Xdir1/\<Tab>\<Down>\<CR>", 'tx')
+  call assert_equal('testfile3', getline(1))
+  call feedkeys(":e Xdir1/\<Tab>\<Down>\<Up>\<Right>\<CR>", 'tx')
+  call assert_equal('testfile1', getline(1))
+
+  " cleanup
+  %bwipe
+  call delete('Xdir1/Xdir2/Xtestfile4')
+  call delete('Xdir1/Xdir2/Xtestfile3')
+  call delete('Xdir1/Xtestfile2')
+  call delete('Xdir1/Xtestfile1')
+  call delete('Xdir1/Xdir2', 'd')
+  call delete('Xdir1', 'd')
   set nowildmenu
 endfunc
 

src/version.c

@@ -775,6 +775,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1063,
 /**/
     1062,
 /**/