patch 8.2.3136: no test for E187 and "No swap file"

Problem:    No test for E187 and "No swap file".
Solution:   Add a test. (Dominique Pellé, closes #8540)

src/testdir/test_cd.vim

@@ -1,6 +1,7 @@
 " Test for :cd and chdir()
 
 source shared.vim
+source check.vim
 
 func Test_cd_large_path()
   " This used to crash with a heap write overflow.
@@ -177,6 +178,21 @@ func Test_lcd_split()
   quit!
 endfunc
 
+func Test_cd_from_non_existing_dir()
+  CheckNotMSWindows
+
+  let saveddir = getcwd()
+  call mkdir('Xdeleted_dir')
+  cd Xdeleted_dir
+  call delete(saveddir .. '/Xdeleted_dir', 'd')
+
+  " Expect E187 as the current directory was deleted.
+  call assert_fails('pwd', 'E187:')
+  call assert_equal('', getcwd())
+  cd -
+  call assert_equal(saveddir, getcwd())
+endfunc
+
 func Test_cd_completion()
   call mkdir('XComplDir1', 'p')
   call mkdir('XComplDir2', 'p')

src/testdir/test_swap.vim

@@ -574,4 +574,8 @@ func Test_swapchoice()
   augroup! test_swapchoice
 endfunc
 
+func Test_no_swap_file()
+  call assert_equal("\nNo swap file", execute('swapname'))
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab

src/version.c

@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3136,
 /**/
     3135,
 /**/