vim-patch:8.2.1296: some part of using 'smarcase' was not tested

Problem:    Some part of using 'smarcase' was not tested.
Solution:   Add more tests. (Dominique Pellé, closes vim/vim#6538)
d66cdcd43a

src/nvim/testdir/test_search.vim

@@ -508,7 +508,7 @@ endfunc
 
 func Test_search_cmdline7()
   throw 'skipped: Nvim does not support test_override()'
-  " Test that an pressing <c-g> in an empty command line
+  " Test that pressing <c-g> in an empty command line
   " does not move the cursor
   if !exists('+incsearch')
     return
@@ -1172,3 +1172,24 @@ func Test_search_special()
   set t_PE=
   exe "norm /\x80PS"
 endfunc
+
+" Test 'smartcase' with utf-8.
+func Test_search_smartcase_utf8()
+  new
+  let save_enc = &encoding
+  set encoding=utf8 ignorecase smartcase
+
+  call setline(1, 'Café cafÉ')
+  1s/café/x/g
+  call assert_equal('x x', getline(1))
+
+  call setline(1, 'Café cafÉ')
+  1s/cafÉ/x/g
+  call assert_equal('Café x', getline(1))
+
+  set ignorecase& smartcase&
+  let &encoding = save_enc
+  close!
+endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab