1 files changed, 36 insertions, 1 deletions

diff --git a/src/nvim/testdir/test_functions.vim b/src/nvim/testdir/test_functions.vim
index 917a5e8eca..5dae8d681a 100644
--- a/src/nvim/testdir/test_functions.vim
+++ b/src/nvim/testdir/test_functions.vim
@@ -833,6 +833,31 @@ func Test_byte2line_line2byte()
   bw!
 endfunc
 
+" Test for charidx()
+func Test_charidx()
+  let a = 'xáb́y'
+  call assert_equal(0, charidx(a, 0))
+  call assert_equal(1, charidx(a, 3))
+  call assert_equal(2, charidx(a, 4))
+  call assert_equal(3, charidx(a, 7))
+  call assert_equal(-1, charidx(a, 8))
+  call assert_equal(-1, charidx('', 0))
+
+  " count composing characters
+  call assert_equal(0, charidx(a, 0, 1))
+  call assert_equal(2, charidx(a, 2, 1))
+  call assert_equal(3, charidx(a, 4, 1))
+  call assert_equal(5, charidx(a, 7, 1))
+  call assert_equal(-1, charidx(a, 8, 1))
+  call assert_equal(-1, charidx('', 0, 1))
+
+  call assert_fails('let x = charidx([], 1)', 'E474:')
+  call assert_fails('let x = charidx("abc", [])', 'E474:')
+  call assert_fails('let x = charidx("abc", 1, [])', 'E474:')
+  call assert_fails('let x = charidx("abc", 1, -1)', 'E474:')
+  call assert_fails('let x = charidx("abc", 1, 2)', 'E474:')
+endfunc
+
 func Test_count()
   let l = ['a', 'a', 'A', 'b']
   call assert_equal(2, count(l, 'a'))
@@ -930,10 +955,20 @@ func Test_Executable()
     " get "cat" path and remove the leading /
     let catcmd = exepath('cat')[1:]
     new
+    " check that the relative path works in /
     lcd /
     call assert_equal(1, executable(catcmd))
-    call assert_equal('/' .. catcmd, exepath(catcmd))
+    " let result = catcmd->exepath()
+    let result = exepath(catcmd)
+    " when using chroot looking for sbin/cat can return bin/cat, that is OK
+    if catcmd =~ '\<sbin\>' && result =~ '\<bin\>'
+      call assert_equal('/' .. substitute(catcmd, '\<sbin\>', 'bin', ''), result)
+    else
+      call assert_equal('/' .. catcmd, result)
+    endif
     bwipe
+  else
+    throw 'Skipped: does not work on this platform'
   endif
 endfunc