diff --git a/test/functional/editor/mode_insert_spec.lua b/test/functional/editor/mode_insert_spec.lua
index f03508035d..528e228121 100644
--- a/test/functional/editor/mode_insert_spec.lua
+++ b/test/functional/editor/mode_insert_spec.lua
@@ -75,4 +75,57 @@ describe('insert-mode', function()
       expect('hello oooworld')
     end)
   end)
+
+  describe('Ctrl-V', function()
+    it('supports entering the decimal value of a character', function()
+      feed('i<C-V>076<C-V>167')
+      expect('L§')
+    end)
+
+    it('supports entering the octal value of a character with "o"', function()
+      feed('i<C-V>o114<C-V>o247<Esc>')
+      expect('L§')
+    end)
+
+    it('supports entering the octal value of a character with "O"', function()
+      feed('i<C-V>O114<C-V>O247<Esc>')
+      expect('L§')
+    end)
+
+    it('supports entering the hexadecimal value of a character with "x"', function()
+      feed('i<C-V>x4c<C-V>xA7<Esc>')
+      expect('L§')
+    end)
+
+    it('supports entering the hexadecimal value of a character with "X"', function()
+      feed('i<C-V>X4c<C-V>XA7<Esc>')
+      expect('L§')
+    end)
+
+    it('supports entering the hexadecimal value of a character with "u"', function()
+      feed('i<C-V>u25ba<C-V>u25C7<Esc>')
+      expect('►◇')
+    end)
+
+    it('supports entering the hexadecimal value of a character with "U"', function()
+      feed('i<C-V>U0001f600<C-V>U0001F601<Esc>')
+      expect('😀😁')
+    end)
+
+    it('entering character by value is interrupted by invalid character', function()
+      feed('i<C-V>76c<C-V>76<C-F2><C-V>u3c0j<C-V>u3c0<M-F3><C-V>U1f600j<C-V>U1f600<D-F4><Esc>')
+      expect('LcL<C-F2>πjπ<M-F3>😀j😀<D-F4>')
+    end)
+
+    it('shows o, O, u, U, x, X, and digits with modifiers', function()
+      feed('i<C-V><M-o><C-V><D-o><C-V><M-O><C-V><D-O><Esc>')
+      expect('<M-o><D-o><M-O><D-O>')
+      feed('cc<C-V><M-u><C-V><D-u><C-V><M-U><C-V><D-U><Esc>')
+      expect('<M-u><D-u><M-U><D-U>')
+      feed('cc<C-V><M-x><C-V><D-x><C-V><M-X><C-V><D-X><Esc>')
+      expect('<M-x><D-x><M-X><D-X>')
+      feed('cc<C-V><M-1><C-V><D-2><C-V><M-7><C-V><D-8><Esc>')
+      expect('<M-1><D-2><M-7><D-8>')
+    end)
+  end)
 end)